COMPOTMDS AND METHODS FOR INHIBITION OF HIV AND RELATED VIRUSES

This application is a continuation-in-part of application serial No. 07/739,927, filed on August 2, 1991.

Field of the Invention

The present invention relates to compounds and pharmaceutically acceptable salts thereof and processes for treating infections by HIV and related viruses and/or the treatment of Acquired Immune Deficiency Syndrome (AIDS) . This invention also relates to pharmaceutical compositions containing the compounds and the method of use of the present compounds alone or in combination with other agents, for the treatment and inhibition of AIDS and viral infection from HIV.

Pactorrounfl gf the invention

A retrovirus designated Human Immunodeficiency Virus (HIV) is believed to be the causative agent of the complex disease termed Acquired Immune Deficiency Syndrome (AIDS) and is a member of the lentivirus family of retroviruses (M. A. Gonda, F. Wong-Staal NR. C. Gallo,

"Sequence Homology and Morphological Similarity of HTLV III and visna Virus, A Pathogenic Lentivirus", Science. 227, 173, (1985); and P. Sonigo and N. Alizon, et al., "Nucleotide Sequence of the Visna Lentivirus: Relationship to the AIDS Virus", Cell. 42, 369, (1985)). The HIV virus (also referred to as the AIDS virus) was previously known

as or referred to as LAV, HTLV-III, or ARV, and is now designated by H V-1. Other closely related variants of HIV-1 include HIV-2 and SIV (simian immunodeficiency virus), and mutants thereof. The complex disease AIDS includes progressive destruction of the immune system and degeneration of the central and peripheral nervous system. The HIV virus appears to preferentially attack helper T-cells (T- lymphocytes or OKT4-bearing T-cells) and also other human cells, e.g., certain cells within the brain. The helper T- cells are invaded by the virus and the T-cell becomes an HIV virus producer. The helper T-cells are quickly destroyed and their number in the human being is depleted to such an extent that the body's B-cells as well as other T-cells normally stimulated by helper T-cells no longer function normally or produce sufficient lymphokines and antibodies to destroy the invading virus or other invading microbes .

While the HIV virus does not necessarily cause death per se _r it does cause the human's immune system to be so severely depressed that the human falls prey to various other diseases such as herpes, Pneumocis is carinii. toxoplasmosis, cyto egalovirus, Kaposi's sarcoma, and Epstein-Barr virus related lymphomas among others. These secondary infections are separately treated using other medications as is conventional. Early during infection, humans with HIV virus seem to live on with little or no symptoms, but have persistent infections. Later in the disease, humans suffer mild immune system depression with various symptoms such as weight loss, malaise, fever, and swollen lymph nodes. These syndromes have been called

persistent generalized lymphadenopathy syndrome (PGL) and AIDS related complex (ARC) and develop into AIDS.

In all cases, those infected with the AIDS virus are believed to be persistently infective to others. Further, AIDS and AIDS related complex is after some time fatal.

A description of the mechanism by which the virus infects its host is given in an article by R. Yarchoan, and S. Broder, "Development of Antiretroviral Therapy for the Acquired Immunodeficiency Syndrome and

Related Disorders", New England Journal of Medicine. 316, 557-564* (February 26, 1987).

Considerable efforts are being directed toward the control of HIV by means of inhibition of the reverse transcriptase of HIV, required for replication of the virus. (V. Merluzzi et al., "Inhibition of the HIV-1 Replication by a Nonnucleoside Reverse Transcriptase Inhibitor", Science. 25, 1411 (1990)). For example, a currently used therapeutic compound, AZT, is an inhibitor of the viral reverse transcriptase (U.S. Patent No.

4,724,232). Unfortunately, many of the known compounds suffer from toxicity problems, lack of bioavailability or are short lived in vivo, viral resistance, or combinations ' thereof. Therefore it is an object of the invention to provide compounds and pharmaceutically acceptable salts thereof ^* to inhibit and/or treat HIV and AIDS.

Another object of the present invention is to provide therapeutic formulations that are of value in the inhibition and/or treatment of infection by HIV and the

treatment or inhibition of the acquired immune deficiency syndrome.

Another object is to provide methods for the inhibition and/or treatment of infection by HIV and the resulting acquired immune deficiency syndrome.

Other objects, features, and advantages will become apparent to those skilled in the art from the following description and claims.

Description of the Invention

The present invention provides compounds useful for the inhibition and/or treatment of HXV and AIDS, either as compounds, pharmaceutically acceptable salts, pharmaceutical composition ingredients, whether or not in combination with other anti-virals, immunomodulators, antibiotics, or vaccines. Methods of treating or inhibiting AIDS, methods of inhibiting replication of HIV, and methods of treating or inhibiting HIV in humans are also disclosed.

The compounds used in the methods of the present invention are those of the formula (IA) below

S

R-. -N- -C II- -N- ^■ Rι (IA)

in which Ri is a stable saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered organic

monocyclic ring having 0 to 4 hetero atoms selected from S, 0, and N; or Ri is a stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic ring having 0 to 5 hetero atoms selected from S, 0, and N;

R2 is a group of the formula

wherein R5 is Ri as defined above; or R5 is a group of the formula

(RlO)y-X- wherein y is 1 or 2; X is N, S, 0 and Rio is Ri as defined; or Rio is hydrogen, Ci-Cς alkyl, C2-C6 alkenyl, or C2~Cζ alkynyl; or R5 is hydrogen, halo, cyano, carboxy, amino, thio, hydroxy, C1-C4 alkoxy, C1-C6 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C2-C8 alkenoxy;

Rβ , R7, R8, and Rg are independently C3-C8 cycloalkyl, hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, halo, amino, nitro, cyano, C1-C5 alkoxy, hydros, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, carbamoyl, or a halo substituted C -Cζ alkyl; or two of which, along with the carbons to which they are attached, combine to form a stable, saturated or unsaturated, substituted or unsubstituted, 3 to 7 membered organic monocylic ring having 0 to 4 hetero atoms selected from S, 0, or N; or Rβ and R8, or R7 and R9, along with the carbon to which they

are attached, form a stable, saturated or unsaturated, substituted or unsubstituted, 3 to 7 membered organic monocylic ring having 0 to 4 hetero atoms selected from S, 0, or N; R3 and R4 are independently hydrogen, hydroxy,

Ci-Cg alkyl, C2~Cg alkenyl, C2-C6 alkynyl, amino, cyano, nitro, C1-C5 alkoxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, halo- substituted (Cι~Cg)alkyl, or carbamoyl; or salts thereof; or compounds of the formula

wherein n is 0 to 4; z is

\

,C=γ or .CH,

Y is 0 or S;

Rll is of the formula

R14 is a stable saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered organic monocyclic ring having 0 to 4 hetero atoms selected from S, 0, and N; or

R14 is a stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic ring having 0 to 5 hetero atoms selected from S, 0, and N; or R14 is a group of the formula

(RlO)y-X- wherein y is 1 or 2; X is N, S, 0 and Rio is a stable saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered organic monocyclic ring having 0 to 4 hetero atoms selected from S, 0, and N; or Rio is a stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic ring having 0 to 5 hetero atoms selected from S, 0, and N; or Rio is hydrogen, Ci-Cβ alkyl, C2-C6 alkenyl, or C2-C6 alkynyl; or

R14 is hydrogen, halo, cyano, carboxy, amino, thio, hydroxy, C1-C4 alkoxy, Ci-Cg alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C2-C8 alkenoxy; R15 and Ri6 are independently C3-C8 cycloalkyl, hydrogen, Ci-Cβ alkyl, C2-C6 alkenyl, halo, amino, nitro, cyano, C1-C5 alkoxy, hydroxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, carbamoyl, or a halo substituted C1-C6 alkyl; R12 is hydrogen, hydroxy, C1-C6 alkyl, C2-C6 alkenyl, amino, cyano, nitro, C1-C5 alkoxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, halo-substituted (C1-C6)alkyl, or carbamoyl; Rl3 is a stable saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered organic monocyclic ring having 0 to 4 hetero atoms selected from S, 0, and N; or

Rl3 is a stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic ring having 0 to 5 hetero atoms selected from S, 0, and N; or Rl3 is RH as defined; or salts thereof.

The invention further encompasses compounds of the formula

wherein n is 0 to 4;

Z is

\

C=γ or ^CH ₂

wherein Y is S or O;

Rll is of the formula

wherein R14 is cyclo(C3~C8)alkyl, cyclo (C3-C8) alkenyl; isothiazolyl, substituted isothiazolyl, tetrazolyl, substituted tetrazolyl, triazolyl, substituted triazolyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, phenyl, substituted phenyl, naphthyl,

substituted naphthyl, benzoxazolyl, substituted benzoxazolyl, benzimidazolyl, substituted benzimidazolyl,thiazolyl, substituted thiazolyl, oxazolyl, substituted oxazolyl, benzothiazolyl, substituted benzothiazolyl, pyrazinyl, substituted pyrazinyl, pyridazinyl, substituted pyridazinyl, thiadiazolyl, substituted thiadiazolyl, benzotriazolyl, substituted benzotriazolyl, pyrrolyl, substituted pyrrolyl, indolyl, substituted indolyl, benzothienyl, substituted benzothienyl, thienyl, substituted thienyl, benzofuryl, substituted benzofuryl, furyl, substituted furyl, quinolinyl, substituted quinolinyl, isoquinolinyl, substituted isoquinolinyl, pyrazolyl, and substituted pyrazolyl; or R 4 is a group of the formula

(RlO)y-X- wherein"y is 1 or 2; X is N, S, or 0, and

RlO is cyclo(C3-C8)alkyl, cyclo (C3-C8) alkenyl; isothiazolyl, substituted isothiazolyl, tetrazolyl, substituted tetrazolyl, triazolyl, substituted triazolyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, phenyl, substituted phenyl, naphthyl, substituted naphthyl, benzoxazolyl, substituted benzoxazolyl, benzimidazolyl, substituted benzimidazolyl,thiazolyl, substituted thiazolyl, oxazolyl, substituted oxazolyl, benzothiazolyl, substituted benzothiazolyl, pyrazinyl, substituted pyrazinyl, pyridazinyl, substituted pyridazinyl, thiadiazolyl, substituted thiadiazolyl, benzotriazolyl, substituted benzotriazolyl, pyrrolyl, substituted pyrrolyl, indolyl, substituted indolyl, benzothienyl, substituted

benzothienyl, thienyl, substituted thienyl, benzofuryl, substituted benzofuryl, furyl, substituted furyl, quinolinyl, substituted quinolinyl, isoquinolinyl, substituted isoquinolinyl, pyrazolyl, and substituted pyrazolyl; or

Rl4 is halo, cyano, carboxy, amino, thio, hydroxy, C1-C4 alkoxy, C2-C8 alkonyl, C2-C8 alkynyl, or C2- C8 alkenoxy;

Rl2 is hydrogen, hydroxy, C±-Cβ alkyl, C2-C6 alkenyl, amino, cyano, nitro, C1-C5 alkoxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, halo substituted C -Cs alkyl, or carbamoyl; and

Rl3 is cyclo(C3-C8) lkyl, cyclo (C3-C8) alkenyl,* isothiazolyl, substituted isothiazolyl, tetrazolyl, substituted tetrazolyl, triazolyl, substituted triazolyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, phenyl, substituted phenyl, naphthyl, substituted naphthyl, benzoxazolyl, substituted benzoxazolyl, benzimidazolyl, substituted benzimidazolyl,thiazolyl, substituted thiazolyl, oxazolyl, substituted oxazolyl, benzothiazolyl, substituted benzothiazolyl, pyrazinyl, substituted pyrazinyl, pyridazinyl, substituted pyridazinyl, thiadiazolyl, substituted thiadiazolyl, benzotriazolyl, substituted benzotriazolyl, pyrrolyl, substituted pyrrolyl, indolyl, substituted indolyl, benzothienyl, substituted benzothienyl, thienyl, substituted thienyl, benzofuryl, substituted benzofuryl, furyl, substituted furyl, quinolinyl, substituted quinolinyl, isoquinolinyl,

substituted isoquinolinyl, pyrazolyl, and substituted pyrazolyl; or Ri3 is Rii as defined;

Rl5 and Rig are independently C3-C8 cycloalkyl, hydrogen, Ci-Cg alkyl, C2~Cg alkenyl, halo, amino, nitro, cyano, C1-C5 alkoxy, hydroxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, carbamoyl, or halo substituted (Cι~Cg)alkyl; and salts thereof, with the proviso that R12 is not hydrogen when R15 and Rig are both hydrogen, R14 is phenyl, Rl3 is phenyl, Z is

and n is 0. The invention also encompasses compounds of the formula

in which Ri is a stable saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered organic monocyclic ring having 0 to 4 hetero atoms selected from S, 0, and N; or i is a stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic ring having 0 to 5 hetero atoms selected from S, 0, and N; R2 is a group of the formula

*. C C

R _R Rq

wherein R5 is Ri as defined above; or R5 is a group of the formula

⁽ Rlθ ⁾ y-X- wherein-y is 1 or 2; X is N, S, O and Rio is Ri as defined; or Rio is hydrogen, Cι~Cg alkyl, C2~Cg alkenyl,or C2*-Cg alkynyl; or R5 is hydrogen, Cι~Cg alkyl, halo, cyano, carboxy, amino, thio, hydroxy, C1-C4 alkoxy, C2-C8 alkenyl,

C2-C8 alkynyl, or C2 to Cs alkenoxy;

Rg and R7 are independently C3-C8 cycloalkyl, hydrogen, Cι~Cg alkyl, C2*-Cg alkenyl, C2*-Cg alkynyl, halo, amino, nitro, cyano, C1-C5 alkoxy, hydroxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio,

C1-C4 alkanoyloxy, carbamoyl, or a halo substituted Ci-Cg alkyl;

R8 and R9, along with the carbons to which they are attached, combine to form a stable, saturated or unsaturated, substituted or unsubstituted, 3 to 7 membered organic monocylic ring having 0 to 4 hetero atoms selected from S,- 0, or N;

R3 and R4 are independently hydrogen, hydroxy, Ci-Cg alkyl, C2~Cg alkenyl, C2~Cg alkynyl, amino, cyano, nitro, C1-C5 alkoxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, halo- substituted (Ci-Cg)alkyl, or carbamoyl; or salts thereof.

The invention also encompasses compounds of the formula

wherein Ri is cyclo(C3~C8)alkyl, cyclo (C3-C8) alkenyl; isothiazolyl, substituted isothiazolyl, tetrazolyl, substituted tetrazolyl, triazolyl, substituted triazolyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, phenyl, substituted phenyl, naphthyl, substituted naphthyl, benzoxazolyl, substituted benzoxazolyl, benzimidazolyl, substituted benzimidazolyl,thiazolyl, substituted thiazolyl, oxazolyl, substituted oxazolyl, benzothiazolyl, substituted benzothiazolyl, pyrazinyl, substituted pyrazinyl, pyridazinyl, substituted pyridazinyl, thiadiazolyl, substituted thiadiazolyl, benzotriazolyl, substituted benzotriazolyl, pyrrolyl, substituted pyrrolyl, indolyl, substituted indolyl, benzothienyl, substituted benzothienyl, thienyl, substituted thienyl, benzofuryl, substituted benzofuryl, furyl, substituted furyl, quinolinyl, substituted quinolinyl, isoquinolinyl, substituted isoquinolinyl, pyrazolyl, and substituted pyrazolyl;

R2 is a group of the formula

^R 6 ^R 7

R_

RR Rq

wherein R5 is pyridyl, substituted pyridyl, phenyl, substituted phenyl, naphthyl, substituted naphthyl, cyclohexenyl, benzyl, or R5 is a group of the formula

(Rlθ)y-X- wherein y is 1 or 2; X is N, S, 0 and Rio is Ri as defined; or R o is hydrogen, Cι~Cg alkyl, C2~Cg alkenyl, or C2~Cg alkynyl;or R5 is hydrogen, Ci-Cg alkyl, halo, cyano, carboxy, amino, thio, hydroxy, C1-C4 alkoxy, C2-C8 alkenyl, C2-C8 alkynyl, or C2 to C8 alkenoxy;

Rg, R7, R8, -and Rg are independently C3-C8 cycloalkyl, hydrogen, Cι~Cg alkyl, C2~Cg alkenyl, C2~C alkynyl, halo, amino, nitro, cyano, C1-C5 alkoxy, hydroxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, carbamoyl, or a halo- substituted Ci-Cg alkyl; or Rg and Rs, or R7 and Rg, along with the carbon to which they are attached, form a stable, saturated or unsaturated, substituted or unsubstituted, 3 to 7 membered organic monocylic ring having 0 to 4 hetero atoms selected from S, O, or N;

R3 and R4 are independently hydrogen, hydroxy, Cι~Cg alkyl, C2~C alkenyl, C2~Cg alkynyl, amino, cyano, nitro, C1-C5 alkoxy, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, C1-C4 alkanoyloxy, halo- substituted Ci-Cg alkyl; or carbamoyl; or salts thereof, with the proviso that when

Rl is pyridyl or pyridyl monosubstituted with halogen, hydroxy, C1-C6 alkyl, or Ci-Cg alkoxy; and R3 and R4 are hydrogen; and Rg, R7, R8, and Rg are hydrogen; R5 is not non-substituted phenyl.

When referring to the above as formula (I) , it is understood to encompass formulae (IA) and (IB) . It should also be understood that when the term "HIV" is used, it includes HIV-1, components, mutant variations, subtypes, and serotypes thereof, and related viruses, components, mutant variations, subtypes, and serotypes thereof. When the term "inhibit" is used, its ordinary meaning is intended, which is to prohibit, hold in check, or discourage, and is not to be construed to be limited to a particular process, procedure, or mechanism of action.

The terms "stable, saturated or unsaturated, substituted or unsubstituted, 3 to 8 membered", or "3 to 7 membered organic monocyclic ring having 0 to 4 hetero atoms selected from S, O, and N" include those wherein the nitrogen and sulfur hetero atoms are optionally oxidized, and the nitrogen hetero atom optionally quaternized. The substituted ring may have 1-8 substituents independently selected from aryl, substituted aryl, halo, Ci-Cg alkyl, C1-C5 alkoxy, C2-Cg alkenyl, C ₂ -C8 alkynyl, C2-C8 alkenoxy, amino, nitro, cyano, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, hydroxy, C1-C4 alkanoyloxy, carbamoyl, halo-substituted Ci-Cg alkyl, a group of the formula

-S02Rχ wherein R _x is Ci-Cg alkyl, aryl, substituted aryl, or amino; or. a group of the formula

O

II

-C-R _x

wherein R^ is as defined above. The term "stable, saturated or unsaturated, substituted or unsubstituted, 7 to 10 membered organic bicyclic rings having 0 to 5 hetero atoms selected from S, 0, and N" includes those wherein the nitrogen and sulfur hetero atoms are optionally oxidized, and the nitrogen hetero atom(s) optionally quaternized. The bicyclic rings may be substituted 1 to 8 times, the substituents independently selected from those above listed for the monocyclic rings.

Examples of such monocyclic and bicyclic rings are cyclo(C3-Cs)alkyl, cyclo(C3~C8)alkenyl; isothiazolyl, substituted isothiazolyl, tetrazolyl, substituted tetrazolyl, triazolyl, substituted triazolyl, pyridyl, substituted pyridyl, imidazolyl, substituted imidazolyl, phenyl, substituted phenyl, naphthyl, substituted naphthyl, benzoxazolyl, substituted benzoxazolyl, benzimidazolyl, substituted benzimidazolyl, hiazolyl, substituted thiazolyl, oxazolyl, substituted oxazolyl, benzothiazolyl, substituted benzothiazolyl, pyrazinyl, substituted pyrazinyl, pyridazinyl, substituted pyridazinyl, thiadiazolyl, substituted thiadiazolyl, benzotriazolyl, substituted benzotriazolyl, pyrrolyl, substituted pyrrolyl, indolyl, substituted indolyl, benzothienyl, substituted benzothienyl, thienyl, substituted thienyl, benzofuryl, substituted benzofuryl, furyl, substituted furyl, quinolinyl, substituted quinolinyl, isoquinolinyl,

substituted isoquinolinyl, pyrazolyl, and substituted pyrazolyl. Other examples of such ring systems may be found in J. Fletcher, 0. Dermer, R. Fox, Nomenclature of Organic Compounds, pp. 20-63 (1974), and in the Examples herein.

The term "Ci-Cg alkyl" includes such groups as methyl, ethyl, n-propyl, isopropyl, n-butyl, s-butyl, t- butyl, n-pentyl, n-hexyl, 3-methylpentyl, and the like. The term "halo" and "halogen" refer to chloro, bromo, fluoro, and iodo.

"C1-C5 alkoxy" refers to those groups such as methoxy, ethoxy, propoxy, t-bu oxy, and the like.

"C2*-Cg alkenyl" refers to those groups such as vinyl, l-propene-2-yl, l-butene-4-yl, l-pentene-5-yl, 1- butene-1-yl, and the like.

"C1-C4 alkylthio" refers to those groups such as methylthio, ethylthio, t-butylthio, and the like.

"C1-C4 alkanoyloxy" refers to those groups such as acetoxy, propionoxy, formyloxy, butyryloxy, and the like.

The term "C ₂ -C ₈ alkenoxy" includes groups such as ethenyloxy, propenyloxy, iso-butoxy ethenyl, and the like.

The term "C ₂ -C ₈ alkynyl" includes groups such as ethynyl, propynyl, pentynyl, butynyl, and the like. The term halo-substituted Ci-Cg alkyl includes alkyls substituted 1, 2, or 3 times by a halogen, including groups such as trifluoromethyl, 2-dichloroethyl, 3,3- difluoropropyl, and the like.

The term "aryl" includes 3 to 8 membered stable saturated or unsaturated organic monocyclic rings having 0 to 4 hetero atoms selected from S, O, and N; and 7 to 10

membered organic stable, saturated or unsaturated, bicyclic rings having 0 to 5 hetero atoms selected from S, 0, N; both of which may be substituted by halo, Cι~Cg alkyl, Cι~ C5 alkoxy, C2~Cg alkenyl, amino, nitro, cyano, carboxy, hydroxymethyl, aminomethyl, carboxymethyl, C1-C4 alkylthio, hydroxy, C1-C4 alkanoyloxy, carbamoyl, or halo-substituted Ci-Cg alkyl.

The following are preferred compounds. N-(2-phenethy1) - '-(2-thiazolyl)thiourea

N-(2-phenethyl)-N'-[2-(4-methyl)thiazolyl]thiourea N-(2-phenethyl) -N' -[2- (4,5-dimethyl)thiazolyl]thiourea N-(2-phenethyl)-N'-[2- (4-cyano)thiazolyl] hiourea N-(2-phenethyl) -N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-phenethyl) -N'- (2-benzothiazolyl)thiourea N- ^* (2-phenethyl) -N ^• -[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-phenethyl) -N'-[2- (6-chloro)pyrazinyl]thiourea N- (2-phenethyl) -N'-[2- (4-ethyl)thiazolyl]thiourea N-(2-phenethyl) -N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-phenethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea N-(2-phenethyl) -N ¹ -(2-pyridyl)thiourea

N-(2-phenethyl)-N'-[2- (6-bromo)pyridyl]thiourea N-(2-phenethyl) -N'-[2- (6-chloro)pyridyl]thiourea N-(2-phenethyl)-N*-[2- (6-methyl)pyridyl]thiourea N-(2-phenethyl) -N'-[2-(5-methyl) yridyl]thiourea N-(2-phenethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-phenethyl) -N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-phenethyl) -N*-[2- (6-ethyl)pyridyl]thiourea N-(2-phenethyl)-N' -[2-(5-ethyl)pyridyl]thiourea

N-(2-phenethyl)-N'-[2- (6-bromo)pyrazinyl]thiourea N-(2-phenethyl)- '-[ (3-(6-bromo)pyridaziny1) ]thiourea N-(2-phenethyl)- '-[2- (6-cyano)pyridyl]thiourea N--(2-phenethyl) -N'-[2-(5-cyano)pyridyl]thiourea N-(2-phenethyl) -N'-[2- (5-cyano)pyrazinyl]thiourea N-(2-phenethyl) -N'-[2- (6-cyano) yrazinyl]thiourea N-(2-phenethyl)-N'-[ (3-(6-cyano)pyridazinyl) ]thiourea

N-(2-phenethyl)-N'-(2-[l,3,4-thiadiazoy1] )thiourea N-(2-phenethyl)-N ¹ -(2-benzimidazolyl)thiourea

N-(.2-phenethyl)-N'-(2-imidazolyl thiourea

N-(2-(2-methoxyphenyl)ethyl -N-- 2-thiazolyl)thiourea N-_(2-(2-methoxypheny1)ethyl -N'- 2-(4- methyl)thiazolyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N-- 2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2- benzothiazolyl)thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- fluoro)benzothiazolyl]thiourea

N-(2- (2-methoxyphenyl)ethyl -N-- 2-(6- chloro)pyrazinyl]thiourea N-(2-(2-methoxyphenyl)ethyl -N'- 2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N- (2-(2-methoxyphenyl)ethyl -N-- 2-pyridyl)thiourea N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- bromo)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- chloro)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- methyl)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(5- methyl) yridyl] hiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(2-methoxyphenyl)ethyl -N-- 2-(5- trifluoromethyl)pyridyl]thiourea N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- ethyl)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N ¹ - 2-(5- ethyl)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- bromo)pyrazinyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- (3-(6- bromo)pyridazinyl) ]thiourea N-(2-(2-methoxyphenyl)ethyl -N'- 2-(6- cyano)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(5- cyano)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl -N'- 2-(5- cyano)pyrazinyl]thiourea

N-(2-(2-methoxyphenyl)ethyl) -N--[2-(6- cyano)pyrazinyl]thiourea

N-(.2-(2-methoxyphenyl)ethyl) -N'-[ (3- (6- cyano)pyridazinyl) ]thiourea N-(2-(2-methoxyphenyl)ethyl)-N*- (2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2-methoxyphenyl)ethyl) -N'-(2- benzimidazolyl)thiourea

N-(2-(2-methoxyphenyl)ethyl) -N'-(2-imidazolyl)thiourea N-(2-(3-methoxyphenyl)ethyl) -N'- (2-thiazolyl)thiourea

N-(2- (3-methoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea N-(2-(3-methoxyphenyl)ethyl) -N' - (2- benzothiazolyl)thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(6- fluoro) enzothiazolyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N' - [2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(4- (3- nitrophenyl)thiazolyl) ]thiourea N-(2-(3-methoxyphenyl)ethyl) - '- (2-pyridyl)thiourea

N-(2-(3-methoxyphenyl)ethyl) -N ^* -[2-(6- bromo)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea N-(2-(3-methoxyphenyl)ethyl)-N ^* -[2- (6- methyl)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N' -[2-(6- trifluoromethyl) yridyl]thiourea

N-.(2-(3-methoxyphenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea N-(2- (3-methoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N- (2-(3-methoxyphenyl)ethyl) -N'-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(3-methoxyphenyl)ethyl) -N--[ (3-(6- bromo)pyridazinyl) ]thiourea

N- (2- (3-methoxyphenyl)ethyl) -N' - 2-(6- cyano)pyridyl]thiourea

N- (2- (3-methoxyphenyl)ethyl)-N' - 2-(5- cyano)pyridyl]thiourea N- (2- (3-methoxyphenyl)ethyl)-N' - 2-(5- cyano)pyrazinyl]thiourea

N- (2- (3-methoxyphenyl)ethyl) -N' - 2-(6- cyano)pyrazinyl]thiourea

N- (2- (3-methoxyphenyl)ethyl) -N' - (3-(6- cyano)pyridazinyl) ]thiourea

N- (2-(3-methoxyphenyl)ethyl) -N' - 2-[l,3,4- thiadiazoyl] )thiourea

N- (2- (3-methoxyphenyl)ethyl) -N' - 2- benzimidazolyl) thiourea N- (2- (3-methoxyphenyl) ethyl) -N' - 2-imidazolyl)thiourea

N- (2- (4-methoxyphenyl) ethyl) -N' - 2-thiazolyl) thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - 2-(4- methyl)thiazolyl]thiourea

N-(2- (4-methoxyphenyl)ethyl) -N'- dimethyl) hiazolyl]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N'- cyano)thiazolyl]thiourea

N- ^' (2- (4-methoxyphenyl)ethyl) -N' - trifluoromethyl)thiazolyl]thiourea N- (2- (4-methoxyphenyl)ethyl) -N' - benzothiazolyl) thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - fluoro)benzothiazolyl]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - chloro)pyraziny1]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - ethyl) hiazolyl]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - pyridyl)thiazolyl) ]thiourea N- (2- (4-methoxyphenyl)ethyl) -N' - nitrophenyl)thiazolyl) ]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N'- N- (2- (4-methoxyphenyl)ethyl) -N' - bromo)pyridyl]thiourea N- (2- (4-methoxyphenyl)ethyl) -N' - bromo)pyridyl]thiourea

N- (2- (4-methoxyphenyl)ethyl)-N' - chloro)pyridyl]thiourea

N- (2- (4-methoxyphenyl)ethyl) -N' - chloro)pyridyl]thiourea

N-(2-( -methoxyphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(5- methyl) yridyl]thiourea N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N ^* -[2-(6- ethyl)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea N-(2-(4-methoxyphenyl)ethyl)-N'- [2-(6- bromo)pyrazinyl]thiourea

N-(2-( -methoxyphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[(3-(6- chloro)pyridazinyl)]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea N-(2-(4-methoxypheny1)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-{4-methoxyphenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl] hiourea

N-(2-(4-methoxyphenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-(2-( -methoxyphenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea N-(2-(4-methoxyphenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(4-methoxyphenyl)ethyl)-N*-(2-imidazolyl)thiourea N-(2-(2--ethoxyphenyl)ethyl)-N*-(2-thiazolyl)thiourea N-(2-(2-ethoxyphenyl)ethyl)-N'- [2-(4- methyl)thiazolyl] hiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) chloro)pyrazinyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) pyridyl)thiazolyl)]thiourea N-(2-(2-ethoxyphenyl)ethyl) nitrophenyl)thiazolyl) ]thiourea

N-(2-(2-ethoxyphenyl)ethyl)

N-(2-(2-ethoxyphenyl)ethyl) bromo)pyridyl]thiourea N- (2-(2-ethoxyphenyl)ethyl) chloro)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) methyl)pyridyl]thiourea

N-(2- (2-ethoxyphenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) trifluoromethyl)pyridyl]thiourea N-(2-(2-ethoxyphenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) bromo)pyrazinyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(2-(2-ethoxyphenyl)ethyl) cyano)pyridyl]thiourea N-(2-(2-ethoxyphenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N- (2-(2-ethoxyphenyl)ethyl) cyano)pyridazinyl) ]thiourea

N-(2-(2-ethoxyphenyl)ethyl) thiadiazoyl] )thiourea N-(2-(2-ethoxyphenyl)ethyl) benzimidazolyl)thiourea

N-(2-(2-ethoxyphenyl)ethyl) N-(2-(2-methylphenyl)ethyl) N-(2-(2-methylphenyl)ethyl) methyl)thiazolyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea N-(2-(2-methylphenyl)ethyl)-N'- [2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-(2-pyridyl)thiourea

N-(2-(2-meth lphenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea N-(2-(2-methylphenyl)ethyl)- '-[2-(5- methyl) yridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl] hiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-{2-(2-methylphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea N-(2-(2-methylphenyl)ethyl)-N ^• -[2-(6- bromo)pyrazinyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[ (3-(6- bromo) yridazinyl) ]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- c ano)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-(2-[1,3,4- thiadia ^' zoyl] )thiourea

N-(2-(2-methylphenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2-methylphenyl)ethyl)-N'- 2-imidazolyl)thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-thiazolyl)thiourea N-(2-(3-methylphenyl)ethyl)-N'- 2-(4- methyl)thiazolyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(4- cyano)thiazolyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2- benzothiazolyl)thiourea N-(2-(3-methylphenyl)ethyl)-N'- 2-(6- fluoro)benzothiazolyl]thiourea

N-(2- (3-methylphenyl)ethyl)-N'- 2-(6- chloro)pyrazinyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(4- ethyl)thiazolyl]thiourea

N-(2- (3-methylphenyl)ethyl)-N'- 2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(4-(3- nitrophenyl)thiazolyl)]thiourea N-(2-(3-methylphenyl)ethyl)-N ^■ - 2-pyridyl)thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(6- bromo)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(5- bromo)pyridyl]thiourea N-(2-(3-methylphenyl)ethyl)-N'- 2-(6- chloro)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(5- chloro)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(6- methyl)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(5- methyl)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(3-methylphenyl)ethyl)-N'- 2-(5- trifluoromethyl)pyridyl]thiourea

N- (2-(3-methylphenyl)ethyl)-N'- 2-(6- ethyl)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- 2-(5- ethyl)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'- [2-(5- chloro)pyrazinyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea N-(2-(3-methylphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-[(3-(6- chloro)pyridazinyl)]thiourea

N-(2-(3-methylphenyl)ethyl)- '-[2-{6- cyano)pyridyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N ^r -[2-(5- cyano)pyridyl]thiourea N-(2-{3-methylphenyl)ethyl)- '-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-[(3-(6- cyano)pyridazinyl) ]thiourea

N-(2-(3-methylphenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl])thiourea

N-(2-(3-methylphenyl)ethyl)-N'-(2- benzimidazolyl)thiourea N-(2-(3-methylphenyl)ethyl)-N'-(2-imidazolyl)thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-(2-thiazolyl)thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(4- methyl)thiazolyl] hiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea N-(2-(2-fluorophenyl)ethyl)-N'- [2-(6- chloro)pyrazinyl]thiourea

N--(2-(2-fluorophenyl)ethyl)-N' - [2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2-fluorophenyl)ethyl)-N*-(2-pyridyl)thiourea N-(2-(2-fluorophenyl)ethyl)-N'-[2-(6- bro o)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N--(2-(2-fluorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(.2-(2-fluorophenyl)ethyl)-N'- 2-(5- methyl)pyridyl]thiourea N-(2-(2-fluorophenyl)ethyl) -N'- 2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl) -N'- 2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-(6- ethyl)pyridyl]thiourea

N-(2- (2-fluorophenyl)ethyl)-N'-1 2-(5- ethyl)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-(6- bromo)pyrazinyl]thiourea N-(2-(2-fluorophenyl)ethyl) -N'-1 (3-(6- bromo)pyridazinyl) ]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-(6- cyano)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-(5- cyano)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-(5- cyano)pyrazinyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-12-(6- cyano)pyrazinyl]thiourea N-(2-(2-fluorophenyl)ethyl)-N'-j (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-[l,3,4- thiadiazoyl] )thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2- benzimidazolyl)thiourea

N-(2-(2-fluorophenyl)ethyl)-N'- 2-imidazolyl)thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- fluoro) enzothiazolyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- chloro) yrazinyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- (3- pyridyl)thiazolyl) ]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- (3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[(3-(6- bromo)pyridazinyl) ]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2- imidazolyl)thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N--(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- (2- benzothiazolyl)thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- [2-(6- fluoro)benzothiazolyl]thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- [2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-(2- pyridyl)thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea N-(2-{2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- chloro>pyridyl]thiourea

N-(2- (2-fluoro-6-methoxyphenyl)ethyl)-N'-[2- (6- methyl)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2- (5- methy1)pyridyl]thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2- (6- trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N ^* -[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N- (2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2- (5- ethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[ (3- (6- bromo)pyridazinyl)]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyρhenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2- (5- cyano)pyrazinyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[ (3- (6- cyano)pyridazinyl) ]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- (2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- (2- benzimidazolyl)thiourea

N- (2-(2-fluoro-6-methoxyphenyl)ethyl)-N'- (2- imidazolyl)thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-(2- thiazolyl)thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N- (2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2- (6- chloro)pyrazinyl]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N*-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-(2- pyridyl)thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- methyl) yridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N*-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea

N-'(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl)]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N*-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N--(2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-(2- imidazolyl)thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) cyano)thiazolyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) trifluoromethyl) hiazolyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) benzothiazolyl)thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) fluoro)benzothiazolyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) chloro)pyrazinyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) ethyl)thiazolyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) pyridyl)thiazolyl) ]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) nitrophenyl)thiazolyl) ]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) pyridyl)thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) bromo)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) bromo)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) chloro)pyridyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) chloro)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2- (2,3,5,6-tetrafluorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) chloro)pyrazinyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) bromo)pyrazinyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) bromo)pyrazinyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[2-(6- cyano) yrazinyl]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N ^■ -(2- benzimidazolyl)thiourea

N-(2-(2,3,5,6-tetrafluorophenyl)ethyl)-N ¹ -(2- imidazolyl)thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-(2-thiazolyl)thiourea N-(2-(2-chlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'- [2-(6- chloro) yrazinyl]thiourea N-(2-(2-chlorophenyl)ethyl)-N'- [2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'- [2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-(2-(2-chlorophenyl)ethyl)-N"-(2-pyridyl)thiourea N-(2-(2-chlorophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N- ^' (2-(2-chlorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N*-[2-(5- methyl)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(2-chlorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-.(2-(2-chlorophenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl) ethyl)pyridyl]thiourea N-(2-(2-chlorophenyl)ethyl) bromo)pyrazinyl]thiourea

N-(2-(2-chlorophenyl)ethyl) bromo)pyridazinyl) ] hiourea

N-(2-(2-chlorophenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl) cyano)pyrazinyl]thiourea N-(2-(2-chlorophenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2-chlorophenyl)ethyl) cyano)pyridazinyl) ]thiourea

N-(2-(2-chlorophenyl)ethyl) thiadiazoyl] )thiourea

N-(2-(2-chlorophenyl)ethyl) benzimidazolyl)thiourea

N-(2- (2-chlorophenyl)ethyl)

N- ^' (2-(3-chlorophenyl)ethyl) N-(2-(3-chlorophenyl)ethyl) methyl)thiazolyl]thiourea

N-(2-(3-chlorophenyl)ethyl) dimethyl)thiazolyl]thiourea

N-(2-(3-chlorophenyl)ethyl) benzothiazolyl)thiourea

N-(2-(3-chlorophenyl)ethyl) fluoro)benzothiazolyl]thiourea

N-(2-(3-chlorophenyl)ethyl) chloro)pyrazinyl]thiourea N-(2-(3-chlorophenyl)ethyl) pyridyl)thiazolyl) ]thiourea

N-(2-(3-chlorophenyl)ethyl) nitrophenyl)thiazolyl) ]thiourea N-(2-(3-chlorophenyl)ethyl) N-(2- (3-chlorophenyl)ethyl) bromo)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl) chloro)pyridyl] hiourea

N-(2-(3-chlorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N*-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea * N-(2-(3-chlorophenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N--[(3-(6- cyano)pyridazinyl)]thiourea N-(2-(3-chlorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-(2- benzimidazolyl) hiourea

N-(2-(3-chlorophenyl)ethyl)-N'-(2-imidazolyl)thiourea N-(2-(1-cyclohexenyl)ethyl)-N*-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N- (2- -cyclohexenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(6- bro o)pyridyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N- (2-(1-cyclohexenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(l-cyclohexenyl)ethyl)-N'-[2-(6- ethyl) yridyl]thiourea

N-(2-(l-cyclohexenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(1-cyclohexenyl)ethyl) -N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N- (2- (1-cyclohexenyl)ethyl) -N'-[2-(6- cyano)pyridyl]thiourea

N- (2- (1-cyclohexenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea N-(2-(l-cyclohexenyl)ethyl)-N ^, -(2-[l,3,4- thiadiazoyl] )thiourea

N-.(2-(1-cyclohexenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N- (2-(1-cyclohexenyl)ethyl)-N'-(2-imidazolyl)thiourea N-(2- (2-naphthyl)ethyl)-N'-(2-thiazolyl)thiourea

N- (2- (2-naphthyl)ethyl)-N ¹ -[2-(4- methyl)thiazolyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea N- (2- (2-naphthyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2- (2-naphthyl)ethyl)-N--[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2- (2-naphthyl)ethyl)-N'-(2-benzothiazolyl)thiourea N-(2-(2-naphthyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2- (2-naphthyl)ethyl)-N'-[2-(6- chloro) yrazinyl] hiourea

N-(2- (2-naphthyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N- (2-(2-naphthyl)ethyl)-N ¹ -[2-(4- (3- pyridyl)thiazolyl) ]thiourea

N- (2-(2-naphthyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea N- ^' (2-(2-naphthyl)ethyl)-N'-(2-pyridyl)thiourea

N-(2- (2-naphthyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2- (2-naphthyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea N-(2- (2-naphthyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea N-(2-(2-naphthyl)ethyl)-N'-[2-(5- ethy1)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea N-(2-(2-naphthyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-naphthyl)ethyl)-N ^« -[2-(6- bromo)pyrazinyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea N-(2-(2-naphthyl)ethyl)-N ^l -[2-(6- cyano)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2-naphthyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea N-(2-(2-naphthyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2-naphthyl)ethyl)-N'-(2-benzimidazolyl)thiourea N-(2-(2-naphthyl)ethyl)-N'-(2-imidazolyl)thiourea N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2- ^' (2,5-dimethoxyphenyl)ethyl) fluoro)benzothiazolyl]thiourea

N-(.2-(2,5-dimethoxyphenyl)ethyl) chloro)pyrazinyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl) pyridyl)thiazolyl)]thiourea

N- (2-(2,5-dimethoxyphenyl)ethyl) nitrophenyl)thiazolyl) ]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) pyridyl)thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) bromo)pyridyl]thiourea

N- (2-(2,5-dimethoxyphenyl)ethyl) chloro) yridyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl) chloro)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2- (2,5-dimethoxyphenyl)ethyl) trifluoromethyl)pyridyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) bromo)pyrazinyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) cyano)pyridyl]thiourea . N-(2- (2,5-dimethoxyphenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N- (2-(2,5-dimethoxyphenyl)ethyl) cyano)pyridazinyl) ]thiourea

N- (2- (2,5-dimethoxyphenyl)ethyl) thiadiazoyl] )thiourea N-(2- (2,5-dimethoxyphenyl)ethyl) benzimidazolyl)thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)- '-{2- imidazolyl)thiourea

N-(2-(2-azidophenyl)ethyl)-N'-(2-thiazolyl)thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2- (4,5- dimethyl)thiazolyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2- (4- cyano)thiazolyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- chloro)pyrazinylJthiourea

N-(2-(2-azido henyl)ethyl)-N ^l -[2-(4- ethyl)thiazolyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-(2-pyridyl)thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- chloro)pyridyl] hiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-C2-(2-azidophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea

N-(.2-(2-azidophenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2- (6- cyano)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[2- (5- cyano)pyrazinyl]thiourea N-(2-(2-azidophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2-azidophenyl)ethyl)-N'-(2-[l,3,4- thiadiazoyl] )thiourea

N-(2-(2-azidophenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2-azidophenyl)ethyl)-N ¹ -(2-imidazolyl)thiourea N-(2-(2,3, - rifluorophenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4- methyl)thiazolyl] hiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4,5- dimethyl)thiazolyl]thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (6- fluoro)benzothiazolyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (6- chloro)pyrazinyl]thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4- ethyl)thiazolyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4- (3- pyridyl)thiazolyl) ]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2- (4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2,3, -trifluorophenyl)ethyl)-N'-(2- pyridyl) hiourea

N-(2-(2,3, -trifluorophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl] hiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- ethyl)pyridylJthiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- bro o)pyrazinyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(5- bro o)pyrazinyl]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea N-(2-(2,3, -trifluorophenyl)ethyl)-N*-[2-(5- cyano)pyridyl]thiourea

N-(2-(2,3, -trifluorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl] hiourea

N-(2-(2,3, -trifluorophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2,3, -trifluorophenyl)ethyl)-N ^* -[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea N-(2-(2,3,4-trifluorophenyl)ethyl)-N'-(2- benzimidazolyl) hiourea

N-(2-(2,3,4-trifluorophenyl)ethyl)- imidazolyl)thiourea

N- (2-(2-fluoro-6-chlorophenyl)ethyl) thiazolyl)thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl) methyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) dimethyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) benzothiazolyl)thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) fluoro)benzothiazolyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) chloro)pyrazinyl]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl) pyridyl)thiazolyl) ]thiourea

N-'(2-(2-fluoro-6-chlorophenyl)ethyl) nitrophenyl)thiazolyl) ]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) pyridyl)thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) bromo)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) chloro)pyridyl]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) ethyl)pyridyl]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl) ethyl)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl) bromo)pyrazinyl]thiourea

N--(2-(2-fluoro-6-chlorophenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(2- (2-fluoro-6-chlorophenyl)ethyl)• cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)■ cyano)pyridyl]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N' - 1 (3- 16- cyano)pyridazinyl) ]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl])thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-(2- imidazolyl)thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl1thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-(2- pyridyl)thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N- (2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- methy1)pyridyl] hiourea N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N"-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea N-(2-(2,6-dimethoxyphenyl)ethyl)-N"-[2-(6- bromo)pyrazinyl]thiourea

N-(2- (2,6-dimethoxyphenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(.2-(2,6-dimethoxyphenyl)ethyl) cyano)pyridyl]thiourea N-(2-(2,6-dimethoxyphenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl) cyano)pyridazinyl)]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl) thiadiazoyl] ) hiourea N-(2- (2,6-dimethoxyphenyl)ethyl) benzimidazolyl) hiourea

N-(2-(2,6-dimethoxyphenyl)ethyl) imidazolyl)thiourea

N-(2-(2,3,6-trichlorophenyl)ethy thiazolyl)thiourea

N-(2-(2,3,6-trichlorophenyl)ethy methyl)thiazolyl]thiourea

N-(2- (2,3, 6-trichlorophenyl)ethyl dimethyl)thiazolyl]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl cyano)thiazolyl]thiourea

N-(2-(2,3, 6-trichlorophenyl)ethyl trifluoromethyl)thiazolyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl benzothiazolyl)thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl fluoro)benzothiazolyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl chloro)pyrazinyl]thiourea N-(2-(2,3, 6-trichlorophenyl)ethyl ethyl)thiazolyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl pyridyl)thiazolyl)]thiourea

N- (2-(2,3,6-trichlorophenyl)ethyl nitrophenyl)thiazolyl) ]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl pyridyl)thiourea

N-(2- (2,3, 6-trichlorophenyl)ethyl bromo)pyridyl]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl bromo)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl)-N"-[2-(6- methyl) yridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridylJthiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- chloro) yrazinyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N*-[2-(6- cyano)pyridyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea

N- (2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[2-(6- cyano)pyrazinyl]thiourea N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-C2,3,6-trichlorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl])thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-(2- benzimidazolyl)thiourea

N-(2-(2,3,6-trichlorophenyl)ethyl)-N'-(2- i idazolyl)thiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N"-(2- thiazolyl)thiourea N-(2-(2,6-dichlorophenyl)ethyl)-N*-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) dimethyl)thiazolyl]thiourea

N- (.2- (2,6-dichlorophenyl)ethyl) benzothiazolyl)thiourea N- (2- (2,6-dichlorophenyl)ethyl) fluoro)benzothiazolyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) chloro)pyrazinyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) pyridyl)thiazolyl) ]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) nitrophenyl)thiazolyl)]thiourea

N-(2-(2,6-dichlorophenyl)ethyl)

N-(2-(2,6-dichlorophenyl)ethyl) bromo)pyridyl] hiourea

N-(2-(2,6-dichlorophenyl)ethyl) chloro)pyridyl]thiourea

N-(2-(2, 6-dichlorophenyl)ethyl) methyl)pyridyl]thiourea N-(2-(2,6-dichlorophenyl)ethyl) methyl)pyridyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-(2- (2,6-dichlorophenyl)ethyl) trifluoromethyl)pyridyl]thiourea

N-.(2-(2,6-dichlorophenyl)ethyl) ethyl)pyridyl]thiourea

N-(2- (2,6-dichlorophenyl)ethyl) ethyl)pyridyl]thiourea N-(2-(2,6-dichlorophenyl)ethyl) bromo)pyrazinyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) bromo)pyridazinyl) ]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) cyano)pyridyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) cyano)pyrazinyl]thiourea N-(2-(2,6-dichlorophenyl)ethyl) cyano)pyrazinyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) cyano)pyridazinyl) ]thiourea

N-(2-(2,6-dichlorophenyl)ethyl) thiadiazoyl] )thiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N--(2- benzimidazolyl)thiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N--(2- imidazolyl)thiourea N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N"-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-*(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2- (4- .trifluoromethyl)thiazolyl]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl)- '-(2- benzothiazolyl)thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N"-(2- pyridyl)thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(5- bro o)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2- (5- trifluoromethyl)pyridyl]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl)-N'-[2-(6- ethyl)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(5- chloro) yrazinyl]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(6- bromo)pyrazinyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[(3-(6- bromo)pyridazinyl) ] hiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[(3-(6- chloro)pyridazinyl)]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(6- cyano)pyridyl]thiourea N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(5- cyano)pyridyl] hiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(5- cyano)pyrazinyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N- (2-(2,3,5-trichlorophenyl)ethyl -N'-(2-[l,3,4- thiadiazσyl] )thiourea N-(2-(2,3,5-trichlorophenyl)ethyl -N'-(2- benzimidazolyl)thiourea

N-(2-(2,3,5-trichlorophenyl)ethyl -N'-(2- imidazolyl) hiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N -(2- thiazolyl)thiourea

N-(2- (3,5-dichlorophenyl)ethyl)-N -[2-(4- methyl)thiazolyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N -[2-(4,5- dimethyl)thiazolyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)-N -[2-(4- cyano)thiazolyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N -[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N -(2- benzothiazolyl)thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N ~ [2- ( 6- fluoro)benzothiazolyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N -[2-(6- chloro)pyrazinyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)-N -[2-(4- ethyl)thiazolyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea N- ^' (2-(3,5-dichlorophenyl)ethyl)-N--(2-pyridyl)thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- methyl)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-( - ethyl) yridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- bro o)pyrazinyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)- '-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[(3-(6- bromo)pyridazinyl)]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[(3-(6- chloro) yridazinyl)]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- cyano}pyridyl]thiourea N-(2-(3,5-dichlorophenyl)ethyl)-N'-[2-(5- cyano) yrazinyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)- '-[2-(6- cyano)pyrazinyl]thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

-49-

N-(2-(3,5-dichlorophenyl)ethyl)-N'- (2-[1,3,4 thiadiazoyl])thiourea

N-(2-(3,5-dichlorophenyl)ethyl)-N'-(2- benzimidazolyl)thiourea N-(2-(3,5-dichlorophenyl)ethyl) -N ' - (2- imidazolyl) hiourea

N-(2- (3-fluorophenyl)ethyl)-N'- 2-thiazolyl) hiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(4- methyl)thiazolyl]thiourea N-(2-( -fluorophenyl)ethyl)-N'- 2-(4,5- di ethyl)thiazolyl] hiourea

N- ^' (2- (3-fluorophenyl)ethyl)-N'- 2- benzothiazolyl) hiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- fluoro)benzothiazolyl] hiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- chloro)pyrazinyl] hiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(4-(3- pyridyl) hiazolyl)]thiourea N-(2-(3-fluorophenyl)ethyl)-N'- 2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-pyridyl) hiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- bromo)pyridyl]thiourea N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- chloro)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- methyl)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(5- methyl)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(5- trifluoromethyl)pyridyl]thiourea N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- ethyl)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(5- ethyl)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- bromo)pyrazinyl]thiourea

N-(2-(3-fluorophenyl)e hyl)-N'- (3-(6- bromo)pyridazinyl)]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(6- cyano)pyridyl]thiourea N-(2-(3-fluorophenyl)e hyl) -N ^• - 2-(5- cyano)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'-[2-(5- cyano)pyrazinyl] hiourea

N-(2-(3-fluorophenyl)ethyl)-N'-[2-{6- cyano)pyrazinyl]thiourea N-(2-(3-fluorophenyl)ethyl)-N*-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl])thiourea

N-(2-(3-fluorophenyl)ethyl)- '-(2- benzimidazolyl)thiourea

N-(2-(3-fluorophenyl)ethyl)-N ¹ -(2-imidazolyl)thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(4- methyl)thiazolylJthiourea

N-(2-(2, -dimethoxyphenyl)ethyl)-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2- benzothiazolyl)thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(6- chloro)pyrazinyl]thiourea

N-(2-(2, -dimethoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea N-(2-(2, -dimethoxyphenyl)ethyl)-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2- pyridyl)thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (5- bromo)pyridyl]thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N"-[2-(5- chloro)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N ^l -[2-(6- methyl)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (5- methyl)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (6- trifluoromethyl)pyridyl]thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N ^, -[2-(5- trifluoromethyl)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)- ^• -[2-(6- ethyl)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (6- bromo)pyrazinyl]thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (5- bromo)pyrazinyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[ (3-(6- chloro) yridazinyl) ]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2-(6- cyano)pyridyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (5- cyano)pyridyl]thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[2- (5- cyano)pyrazinyl]thiourea

N-(2- (2,4-dimethoxyphenyl)ethyl)-N'-[2- (6- cyano)pyrazinyl]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2- benzimidazolyl)thiourea N-(2-(2,4-dimethoxyphenyl)ethyl)-N'-(2- imidazolyl)thiourea

N-[ (4-methyl)-3-pentenyl]-N'-(2-thiazolyl)thiourea

N-[ (4-methyl)-3-penteny1]-N'-[2-(4- methyl)thiazolyl]thiourea N-[ (4-methyl)-3-pentenyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-(2- benzothiazolyl)thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea N-[ (4-methyl)-3-pentenyl]- '-[2-(6- chloro) yrazinyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[(4-methyl)-3-pentenyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[(4-methyl)-3-pentenyl]-N'-(2-pyridyl)thiourea

N-[ (4-methyl)-3-pentenyl]- '-[2-(6- bromo)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(6- chloro)pyridyl]thiourea N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]- ^» -[2-(6- methyl)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]- '-[2-(5- methyl)pyridyl]thiourea

N-[(4-methyl)-3-pentenyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea N-[ (4-methyl)-3-pentenyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N--[2-(5- chloro)pyrazinyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N ^* -[2-(5- bromo)pyrazinyl]thiourea N-[ (4-methyl)-3-pentenyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[(4-methyl)-3-pentenyl]-N'-[ (3- (6- chloro)pyridazinyl)]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(6- cyano)pyrid l]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N ¹ -[2-(6- cyano)pyrazinyl]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[ (4-methyl)-3-pentenyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea.

N-[ (4-methyl)-3-pentenyl]-N'-(2- benzimidazolyl)thiourea

N-[ (4-methyl)-3-pentenyl]-N'-(2-imidazolyl)thiourea

N-(2-cis-phenylcyclopropyl)-N' 2-(4- methyl)thiazolyl]thiourea

N-(2-cis-phenylcyclopropyl)-N ¹ 2-(4,5- dimethyl)thiazolyl] hiourea

N-(2-cis-phenylcyclopropyl)-N' 2- benzothiazolyl)thiourea

N-(2-cis-phenylcyclopropyl)-N' 2-(6- fluoro)benzothiazolyl]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^• 2-(6- chloro)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl) -N' ^■ 2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^■ 2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^■ 2-(6- bromo)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'• 2-(6- chloro)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N" ^■ 2-(6- methyl)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^■ 2-(6- trifluoromethyl)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'• 2-(6- ethyl)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl) -N'- 2-(6- bromo)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^■ 2-(6- cyano)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N' ^■ 2-(5- cyano)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'- 2-(6- cyano)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl)-N"-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-.(2-cis-phenylcyclopropyl)-N'-(2-[1,3,4- thiadiazoyl])thiourea N-(2-cis-phenylcyclopropyl)-N'-(2- benzimidazolyl)thiourea

N-(2-cis-phenylcyclopropyl)-N'-(2-imidazolyl)thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-(2- thiazolyl)thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(4- (3-nitrophenyl)thiazolyl)]thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-(2- pyridyl)thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- bromo) yridyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[(2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N ¹ -[2-(5- trifluoromethyl)pyridyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N- ^' [ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[2-(5- bro o)pyrazinyl]thiourea

N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[ (3-(6- bromo) yridazinyl) ]thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-[2-(5- cyano) yridyl]thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-[2-(5- cyano) yrazinyl]thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea N-[ (2-methyl)-2-(2,6-dichlorophenyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-(2- [1,3,4-thiadiazoyl] )thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'- (2- benzimidazolyl)thiourea

N-[ (2-methyl)-2- (2,6-dichlorophenyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-(2-thiazolyl)thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4-methyl)thiazolyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4,5-dimethyl)thiazolyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4-cyano)thiazolyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4-trifluoromethyl)thiazolyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'- (2-benzothiazolyl)thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(6-fluoro)benzothiazolyl]thiourea

N-[(2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N ^« -[2-(6-chloro)pyrazinyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N ^* -[2-(4-ethyl)thiazolyl]thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4-(3-pyridyl)thiazolyl)]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(4-{3-nitrophenyl)thiazolyl)]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N ^• -(2-pyridyl)thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- '-[2-(6-bromo)pyridyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- '-[2-(5-bromo)pyridyl]thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]-

N'-[2-(6-chloro)pyridyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- '-[2-(5-chloro)pyridyl] hiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- '-[2-(6-methyl)pyridyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(5-methyl)pyridyl] hiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(6-trifluoromethyl)pyridyl]thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(5-trifluoromethyl)pyridyl]thiourea

N-[(2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- '-[2-(6-ethyl)pyridyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(5-ethyl)pyridyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N ^r -[2-(5-chloro)pyrazinyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N--[2-(6-bromo)pyrazinyl]thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chloropheπyl)ethyl]- N'-[2-(5-bromo)pyrazinyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[(3-(6-bromo)pyridazinyl)]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[ (3--(6-chloro)pyridazinyl)]thiourea

N-[(2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- -I'-[2-(6-cyano)pyridyl3thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N*-[2-(5-cyano)pyridyl]thiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2-(5-cyano)pyrazinyl]thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[2- (6-cyano)pyrazinyl]thiourea

N- ^' [ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'-[ (3-(6-cyano)pyridazinyl) ] hiourea N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'- (2-[l,3,4-thiadiazoyl] )thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'- (2-benzimidazolyl)thiourea

N-[ (2,2-dimethyl)-2-(2-fluoro-6-chlorophenyl)ethyl]- N'- (2-imidazolyl)thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-(2-benzothiazolyl)thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(6- bro o)pyrazinyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(6-cyano)pyridyl]thiourea N- ^* [2-(2-pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-(2-[l,3,4- thiadiazoyl] )thiourea

N-[2- (2-pyridyl)ethyl]-N"-(2-benzimidazolyl)thiourea N-[2-(2-pyridyl)ethyl]-N'-(2-imidazolyl)thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2- (2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(6-methoxy) yridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(6-methoxy) yridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N ^* -(2- benzothiazolyl)thiourea

N- ^' [2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N ^* -[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(6- methyl) yridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] ethyl)pyridyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] bromo)pyridazinyl) ]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2- (2-(6-ethoxy)pyridyl)ethyl] cyano)pyrazinyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] cyano)pyridazinyl)]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] thiadiazoyl] )thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2- (6-ethoxy)pyridyl)ethyl] imidazolyl)thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl] dimethyl)thiazolyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] benzothiazolyl)thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] fluoro)benzothiazolyl]thiourea

N-[2- (2-(6-fluoro)pyridyl)ethyl] chloro)pyrazinyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] pyridyl)thiazolyl) ]thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl] nitrophenyl)thiazolyl) ]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] bromo)pyridyl] hiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] chloro)pyridyl]thiourea

N- ^* [2-(2-(6-fluoro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea N-[2- (2-(6-fluoro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-{6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[(3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(S-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-.[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-F'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(5-fluoro) yridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N*-(2- pyridyl)thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo) yridyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea N-[2-(2-(5-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy chloro)pyridyl]thiourea

N-t2-(2-(5-fluoro)pyridyl)ethy methyl)pyridyl]thiourea N-[2-(2- (5-fluoro)pyridyl)e hy methyl)pyridyl]thiourea

N-[2- (2-(5-fluoro)pyridyl)ethy trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy trifluoromethyl)pyridyl]thiourea

N- ^' [2-(2-(5-fluoro)pyridyl)ethy ethyl)pyridyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy ethyl)pyridyl]thiourea N-[2- (2-(5-fluoro)pyridyl)ethy chloro)pyrazinyl] hiourea

N-[2-(2-(5-fluoro)pyridyl)ethy bromo)pyrazinyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy bromo)pyrazinyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy bromo)pyridazinyl)]thiourea

N-[2- (2-(5-fluoro)pyridyl)ethy chloro)pyridazinyl) ]thiourea N-[2-(2-(5-fluoro)pyridyl)ethy cyano)pyridyl]thiourea

N-[2- (2-(5-fluoro)pyridyl)ethy cyano)pyridyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethy cyano)pyrazinyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl cyano)pyrazinyl]thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl cyano)pyridazinyl) ]thiourea N-[2-(2-(5-fluoro)pyridyl)ethyl thiadiazoyl] )thiourea

N-[2-(2-(5-fluoro)pyridyl)ethyl benzimidazolyl)thiourea

N-[2-(2- (5-fluoro)pyridyl)ethyl imidazolyl)thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl thiazolyl)thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl methyl)thiazolyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl dimethyl)thiazolyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro}benzothiazolyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N--[2-(4-(3- pyridyl)thiazolyl)]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N--[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2- (6- bromo)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl) yridyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-{4-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[ (3-(6- bromo) yridazinyl)]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[ (3- (6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-[2- (5- cyano)pyrazinyl]thiourea

N-[2-(2-(4-fluoro)ρyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(4-fluoro) yridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-(4-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (4- methyl)thiazolyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl] hiourea N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N- ^' [2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(4- (3- pyridyl)thiazolyl) ]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ] hiourea N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (6- bromo)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (6- chloro)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (6- methyl)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- methy1)pyridyl]thiourea N-[2- (2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (5- ethyl)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[(3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[(3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea N-[2-(2-(3-fluoro) yridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N"-(2- thiazolyl)thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-{2-(6-chloro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-{2-(6-chloro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] methyl)pyridyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] ethyl)pyridyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] bromo)pyridazinyl) ]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] cyano)pyrazinyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] cyano)pyridazinyl) ]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] thiadiazoyl] )thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl] imidazolyl)thiourea N-[2-(2-(5-chloro)pyridyl)ethyl] thiazolyl)thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] methyl)thiazolyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] dimethyl)thiazolyl]thiourea

N-'[2-(2-(5-chloro)pyridyl)ethyl] cyano)thiazolyl]thiourea

N-[2-(2- (5-chloro)pyridyl)ethyl] trifluoromethyl) hiazolyl]thiourea N-[2-(2-(5-chloro)pyridyl)ethyl] benzothiazolyl)thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea N-[2-(2-(5-chloro) yridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl) hiazolyl) ]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl).]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl] hiourea N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- bro o)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2- (5- methyl) yridyl1thiourea N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl] hiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N*-[2-(5- trifluoromethyl) yridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea N-[2- (2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea N-[2-(2-(5-chloro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] cyano)pyrazinyl] hiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] cyano)pyrazinyl]thiourea N-[2-(2-(5-chloro)pyridyl)ethyl] cyano)pyridazinyl) ]thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] thiadiazoyl] )thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2-(5-chloro)pyridyl)ethyl] imidazolyl)thiourea

N- ^' [2-(2-(4-chloro)pyridyl)ethyl] thiazolyl)thiourea N-[2- (2-(4-chloro)pyridyl)ethyl] methyl)thiazolyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] dimethyl)thiazolyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] cyano) hiazolyl] hiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] benzothiazolyl)thiourea N-[2-(2-(4-chloro)pyridyl)ethyl] fluoro)benzothiazolyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] chloro)pyrazinyl]thiourea

N-[2- (2-(4-chloro)pyridyl)ethyl] ethyl)thiazolyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] pyridyl)thiazolyl) ]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] nitrophenyl)thiazolyl)]thiourea N-[2-(2-(4-chloro)pyridyl)ethyl] pyridyl)thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] bromo)pyridyl]thiourea

N-[2- (2-(4-chloro)pyridyl)ethyl] bromo)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl] chloro)pyridyl]thiourea N-[2-(2-(4-chloro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- ethyl) yridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[(3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) 3thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- cyano) yridyl]thiourea N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]- '-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N'-(2-[l,3,4- thiadiazoyl] )thiourea

N-[2-(2-(4-chloro)pyridyl)ethyl]-N*-(2- benzimidazolyl)thiourea N-[2-(2-(4-chloro)pyridyl)ethyl]-N ¹ -(2- imidazolyl)thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl3thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl3-N'-[2-(4- cyano)thiazolyl]thiourea N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2- (2-(3-chloro)pyridyl)ethyl] benzothiazolyl)thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] fluoro)benzothiazolyl]thiourea N-[2- (2-(3-chloro)pyridyl)ethyl] chloro)pyrazinyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] ethyl)thiazolyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] pyridyl)thiazolyl) ]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] pyridyl)thiourea N-[2-(2-(3-chloro)pyridyl)ethyl] bromo)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] bromo)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] methyl)pyridyl]thiourea N-[2-(2-(3-chloro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] ethyl)pyridyl]thiourea N-[2-(2-(3-chloro)pyridyl)ethyl] chloro)pyrazinyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] bromo)pyridazinyl) ]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl] chloro)pyridazinyl) ]thiourea N-[2-(2-(3-chloro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[2-(6- cyano) yrazinyl]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-[(3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea.

N-[2-(2-(3-chloro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-.[2- (2-(3-chloro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N*-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl] hiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N*-[2-(4-

(3-nitrbphenyl)thiazolyl)]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2- (5-methoxy-6-fluoro)pyridyl)ethyl] methyl)pyridyl]thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] trifluoromethyl) yridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] chloro)pyrazinyl]thiourea N-[2- (2-(5-methoxy-6-fluoro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] bromo)pyridazinyl) ]thiourea

N-[2- (2-(5-methoxy-6-fluoro)pyridyl)ethyl] chloro)pyridazinyl) ]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] cyano)pyridyl]thiourea N-[2-(2- (5-methoxy-6-fluoro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2- (5-methoxy-6-fluoro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] cyano)pyridazinyl)]thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] [1,3,4-thiadiazoyl] )thiourea N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2-(5-methoxy-6-fluoro)pyridyl)ethyl] imidazolyl)thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl] thiazolyl)thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl] dimethyl)thiazolyl]thiourea

N- ^' [2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl] benzothiazolyl)thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl] fluoro)benzothiazolyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- (3-nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- bro o)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl] hiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- [1,3,4-thiadiazoyl])thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-[2- (2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4-

(3-pyridyl)thiazolyl) ]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- (3-nitrophenyl)thiazolyl) ] hiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N"-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2- (2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- methy1)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N ^, -[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N"-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ] hiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl)]thiourea N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- [1,3,4-thiadiazoy1] )thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-(6-methoxy-3-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)] hiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] trifluoromethyl)pyridyl] hiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] trifluoromethyl)pyridyl] hiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] bromo)pyridazinyl) ]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] cyano)pyridyl]thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2- (5-ethoxy-6-fluoro)pyridyl)ethyl] cyano)pyrazinyl] hiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] cyano)pyridazinyl) ]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] [1,3,4-thiadiazoyl] )thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl] imidazolyl)thiourea

N-[2-(2- (3-ethoxy-6-fluoro)pyridyl)ethyl] thiazolyl)thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] methyl)thiazolyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] dimethyl)thiazolyl]thiourea N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] benzothiazolyl)thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] fluoro)benzothiazolyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] chloro)pyrazinyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] pyridyl)thiazolyl) ]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] nitrophenyl)thiazolyl) ]thiourea N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl] pyridyl)thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N ^* -[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N ^J -[2-(6- chloro)pyridyl]thiourea N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-fe¬ ethyl)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N- ^* [2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- [1,3, -thiadiazoyl] )thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea F-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-.[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2- (2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl] -N'-[2-(6- bro o)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- methy1)pyridyl]thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N ^, -[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[(3-(6- bro o)pyridazinyl)]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl] hiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N ¹ -[2-(5- cyano)pyrazinyl] hiourea N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N- ^" [2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-(2- [1,3, -thiadiazoyl] )thiourea

N-[2-(2-(6-ethoxy-3-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-{6-ethoxy-3-fluoro)pyridyl)ethyl]- '-(2- imidazolyl)thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl) hiourea

N-[2-(5,6-fluoro)pyridyl) thyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl] hiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2-pyridyl)thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl3thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl3-N--[2-(6- chloro)pyridyl3thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl3-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N ^, -[2-(6- methyl)pyridyl] hiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N ¹ -[2- (5- ethyl)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[ (3- (6- bromo)pyridazinyl) ]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[ (3- (6- chloro)pyridazinyl) ]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N--[2-(6- cyano)pyridyl]thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-[ (3- (6- cyano)pyridazinyl) ]thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2-[l,3,4- thiadiazoyl] )thiourea N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(5,6-fluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2- (4- cyano)thiazolyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)] hiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl] hiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N-[2- (2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-.[2-(2-(5,6-difluoro)pyridyl)ethyl]-N--[ (3-(6- bromo)pyridazinyl)]thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2- (6- cyano)pyridyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2- (5- cyano)pyrazinyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-[2-(β- cyano)pyrazinyl]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N"-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea N-[2-(2-(5,6-difluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2- ( ,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl) hiazolyl)]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2- (2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2- (2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl] hiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl)] hiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N ¹ -(2-[1,3,4- thiadiazoyl])thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(5,6-dichloro) yridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazoly1]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(5,6-dichloro) yridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N--[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-(2- benzothiazolyl) hiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(5,6-dichloro) yridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] pyridyl)thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] bromo)pyridyl]thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl] bromo)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] methyl)pyridyl]thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] ethyl)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] chloro) yrazinyl]thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] bromo)pyridazinyl)]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] chloro)pyridazinyl) ]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] cyano)pyridyl]thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl] cyano)pyridazinyl) ]thiourea

N-[2-(2-(5,6-dichloro)ρyridyl)ethyl] thiadiazoyl] )thiourea N-[2-(2-(5,6-dichloro)pyridyl)ethyl] benzimidazolyl)thiourea

N-[2-(2-(5,6-dichloro)pyridyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]- '-(2- thiazolyl)thiourea N-[2-(2-(3,6-dichloro) yridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N*-[2-(4- ethyl)thiazoly1]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl)]thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N ^* -(2- pyridyl)thiourea

N-[2-(2-(3,6-dichloro) yridyl)ethyl]-N'-[2-(6- bro o)pyridyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2- (2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-(3,6-dichloro) yridyl)ethylJ-N'-[2-(5- chloro)pyridyl]thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2-(3, -dichloro)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(3,6-dichloro) yridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N--[2-(5- bromo)pyrazinyl] hiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2- (5- cyano)pyrazinyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[2- (6- cyano)pyrazinyl]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-[ (3- (6- cyano)pyridazinyl) ]thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-(2- benzimidazolyl)thiourea N-[2-(2-(3,6-dichloro)pyridyl)ethyl]-N'-(2- imidazoly.l)thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-(2- thiazolyl)thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N"-(2- benzothiazolyl)thiourea N- ^" [2-(cis-2-pyridyl)cyclopropyl]-N'-[2- (6- fluoro)benzothiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2- (6- chloro)pyrazinyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N"-[2-(6- bromo)pyridyl]thiourea N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(cis-2-pyridyl)cyclopropyl]- ^■ -[2-(6- ethyl)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N*-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(cis-2-pyriάyl)cyclopropyl]-N--[2- (6- cyano)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyridyl]thiourea N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-{cis-2-pyridyl)cyclopropyl]-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N*-(2-[1,3,4- thiadiazoyl])thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-(2- benzimidazolyl)thiourea N-[2-(cis-2-pyridyl)cyclopropyl]-N'-(2- imidazolyl)thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- thiazolyl)thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N"-[2-(4- methyl)thiazolyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(4,5- dime hyl)thiazolyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- benzothiazolyl)thiourea N-[2-(cis-2-(6-fluoro) yridyl)cyclopropyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N--[2-(6- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(4- (3-nitr ^' ophenyl)thiazolyl)]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyridyl]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N--[2-(6- chloro)pyridyl] hiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N- ^' [2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- bro o)pyraziny1]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2- (cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- [1,3,4-thiadiazoy1] )thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- imidazolyl)thiourea

N-[2-(cis-2-(6-chloro) yridyl)cyclopropyl]-N'-(2- thiazolyl)thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4- methyl)thiazolyl]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N ^r -[2-(4- (3-nitrophenyl)thiazolyl) ]thiourea

N-[2—(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-(2- pyridyl)thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N*-[2-(5- bromo)pyrid l]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]- '-[2-(6- chloro)pyridyl]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N*-[2-(5- chloro) yridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N--[2-(5- methyl)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl3-N--[2-(5- ethyl) yridyl3thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl3-N--[2-(5- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyrazinyl] hiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[ (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N ^r -[ (3-(6- chloro)pyridazinyl)]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyridyl3thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(5- cyano) yrazinyl]thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-[ (3- (6- cyano)pyridazinyl) ]thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-(2- [1,3,4-thiadiazoyl] )thiourea N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(cis-2-(6-chloro)pyridyl)cyclopropyl]-N'-(2- i idazolyl)thiourea

N-[2-(ciε-2-(6-methoxy)pyridyl)cyclopropyl]-N'- (2- thiazolyl)thiourea

N-[2-(cis-2- (6-methoxy)pyridyl)cyclopropyl]-N'-[2- (4- methyl) hiazolyl3thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl3-N'-[2- (4,5-dimethyl)thiazolyl]thiourea N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'- (2- benzothiazolyl)thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N ¹ -[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(4- (3-nitrophenyl)thiazolyl) ]thiourea N-[2-(cis-2-(6-methoxy) yridyl)cyclopropyl]-N'-(2- pyridyl)thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyridyl3thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl3-N'-[2-(6- methyl)pyridyl3thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- methy1)pyridyl3thiourea N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-.[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N"-[2-(5- cyano)pyridyl]thiourea N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[(3-(6- cyano)pyridazinyl)]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N"-(2- [1,3,4-thiadiazoyl] ) hiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N*-(2- benzimidazolyl)thiourea N-[2-(cis-2-(6-methox )pyridyl)cyclopropyl]- '-(2- imidazolyl)thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-(2- thiazolyl)thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N--[2-(4- methyl)thiazolyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-ethox )pyridyl)cyclopropyl]-N'-(2- benzothiazolyl)thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropy1]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4- (3-pyridyl)thiazolyl) ]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4- (3-nitrophenyl)thiazolyl)]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-(2- pyridyl)thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N ¹ -[2- (6- ethyl)pyridyl3thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- ethyl)pyridyl3thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- bromo)pyrazinyl3thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(cis-2- (6-ethoxy)pyridyl)cyclopropyl]-N"-[2-(5- cyano)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- cyano)pyrazinyl]thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N" -[2- (6- cyano)pyrazinyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[ (3- (6- cyano)pyridazinyl)]thiourea

N-[2-(cis-2- (6-ethoxy)pyridyl)cyclopropyl]-N"- (2- [1,3,4-thiadiazoyl] )thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-(2- imidazolyl)thiourea N-[2-(2-[l,3-pyrimidyl] )ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-[l,3-pyrimidyl] )ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2-[l,3-pyrimidyl] )ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2-[l,3-pyrimidyl] )ethyl]-N ¹ -[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-[1,3-ρyrimidyl] )ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea N-[2-(2-[l,3-pyrimidyl] )ethyl]-N'-[2-(4- (3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]- '-(2-pyridyl)thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(5- chloro)pyridyl]thiourea N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N ^, -[2-(5- methyl) yridyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-[1,3-pyrimidyl3 )ethyl]-N'-[2-(6- ethyl}pyridyl]thiourea N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-.[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-E2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-[1,3-pyrimidyl])ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[(3-(6- bro o)pyridazinyl)]thiourea N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[(3-(6- chloro)pyridazinyl)]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(5- c ano)pyridyl]thiourea

N-[2-(2-[l,3-pyrimidyl])ethyl]-N'-[2-(5- cyano)pyrazinyl] hiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea N-[2-(2-[1,3-pyrimidyll)ethyl]-N'-[ (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-(2-[1,3,4- thiadiazoyl] )thiourea

N-[2-(2-[1,3-pyrimidyl] )ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2-[l,3-pyrimidyl] )ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-thiazolyl)thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4- methyl)thiazolyl] hiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4,5- dimethyl) hiazolyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4- cyano)thiazolyl]thiourea N-[2-(2-pyrazinyl _. ]ethyl]-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-benzothiazolyl)thiourea

N-[2- (2-pyrazinyl]ethyl]-N'- 2-(6- fluoro)benzothiazolyl]thiourea N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- chloro)pyrazinyl] hiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2-pyrazinyl]ethyl]-N"- 2-pyridyl thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- bromo)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N' - 2-(5- bromo)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- chloro)pyridyl]thiourea N-[2-(2-pyrazinyl]ethyl]-N'- 2-(5- chloro)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- methyl)pyridyl]thiourea

N-[2- (2-pyrazinyl]ethyl]-N'- 2-(5- methyl)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- trifluoromethyl)pyridyl]thiourea

N-[2- (2-pyrazinyl]ethyl]-N'- 2-(5- trifluoromethyl)pyridyl]thiourea N-[2-(2-pyrazinyl]ethyl]-N'- 2-(6- ethy1)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N' - 2-(5- ethyl)pyridyl]thiourea

N-[2- (2-pyrazinyl]ethyl]-N' - 2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[2-(5- bromo)pyrazinyl] hiourea N-[2-(2-pyrazinyl]ethyl]-N'-[(3-(6- bromo)pyridazinyl) ]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[(3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea N-[2-(2-pyrazinyl]ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-(2-[1,3,4- thiadiazoyl3)thiourea

N-[2-(2-pyrazinyl]ethyl]-N'-(2-benzimidazolyl)thiourea N-[2-(2-pyrazinyl]ethyl]-N'-(2-imidazolyl)thiourea N-[2-(3-pyridazinyl)ethyl]-N"-(2-thiazolyl)thiourea N-[2-(3-pyridazinyl)ethyl]-N*-[2-(4- methyl)thiazolyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(3-pyridazinyl)ethyl]-N ^* -[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-[2-(6- chloro) yrazinyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4- ethyl}thiazolyl]thiourea N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl)]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'-(2-pyridyl)thiourea N-[2-(3-pyridazinyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea

N-[2- (3-pyridazinyl)ethyl]-N'- 2-(5- bromo)pyridyl] hiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- chloro)pyridyl]thiourea

N-[2-(3-pyridaziny1)ethyl]-N'- 2-(5- chloro)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- methyl)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- methyl)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- trifluoromethyl)pyridyl]thiourea

N-[2- (3-pyridazinyl)ethyl]-N'- 2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- ethyl)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- ethyl)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- chloro)pyrazinyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- bromo)pyrazinyl] hiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- bromo)pyrazinyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- (3-(6- bromo)pyridazinyl)]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- (3-(6- chloro)pyridazinyl)]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- cyano)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- cyano)pyridyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(5- cyano)pyrazinyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-(6- cyano)pyrazinyl]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- (3-(6- cyano)pyridazinyl) ]thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-[l _f 3,4- thiadiazoyl] )thiourea

N-[2- (3-pyridazinyl)ethyl]-N'- 2- benzimidazolyl)thiourea

N-[2-(3-pyridazinyl)ethyl]-N'- 2-imidazolyl)thiourea

N-[2-(2,6-difluoro- 3-methoxyphenyl)ethyl] -N'-(2- thiazolyl) hiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N"-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N"-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N ^* -[2-(4-(3- nitrophenyl)thiazolyl)]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- bromo)pyridyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N*-[2-(6- chloro)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- chloro)pyridyl] hiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]- '-[2-(5- methyl)pyridyl] hiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl] -N'-[2- (3-fδ- bromo]pyridazinyl) ]thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl] -N'-[2- (3-[6- chloro]pyridazinyl) ]thiourea N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2- (6- cyano)pyridyl]thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl] -N'-[2-(3-[6- cyano]pyridazinyl) ]thiourea N- ^' [2- (2,6-difluoro-3-methoxyphenyl)ethyl]-N'- (2-

[1,3,4-thiadiazoyl] )thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl] -N'-(2- benzimidazolyl)thiourea

N-[2- (2,6-difluoro-3-methoxyphenyl)ethyl] -N'- (2- imidazolyl)thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(4- cyano) hiazolyl]thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2- (4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2- benzothiazolyl)thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2- (6- fluoro)benzothiazolyl]thiourea N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2- (4- ethyl)thiazolyl]thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(4-(3- nitrophenyl) hiazolyl) ]thiourea

N-[2- (2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2- pyridyl) hiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2- (6- bromo)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- trifluoromethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2- (6- ethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- bromo)pyrazinyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(3-[6- bromo]pyridazinyl) ]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(3-[6- chloro]pyridazinyl)]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- cyano)pyridyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2, -difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(6- cyano)pyrazinyl]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-[2-(3-[6- cyano]pyridazinyl)]thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2-[1,3,4- thiadiazoyl])thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2- benzimidazolyl)thiourea

N-[2-(2,6-difluoro-3-ethoxyphenyl)ethyl]-N'-(2- imidazoly1)thiourea N- ^' [2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2- (2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2- (4- ethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro- -methoxyphenyl)ethyl]-N'-[2- (4,5- dimethyl)thiazolyl]thiourea N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N"-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2- (4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl] -N' - (2- benzothiazolyl)thiourea

N-[2- (2,6-difluoro- -methoxyphenyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-[2- (2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea N- [2- (2 , 6-difluoro-4-methoxyphenyl ) ethyl] -N ' - [2- (4- ethyl)thiazolyl] hiourea

N-[2-(2, 6-difluoro-4-methoxyphenyl)ethyl] -N'-[2- (4- (3- pyridyl)thiazolyl) ] hiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl] -N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl] -N' - (2- pyridyl) hiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl] -N'-[2- (6- bromo) yridyl]thiourea N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2- (6- chloro)pyridyl]thiourea

N-[2- (2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(6- methyl)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(6- trifluoromethyl) yridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl] -N'-[2- (6- ethyl)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2- (5- ethyl) yridyl]thiourea

N-[2- (2,6-difluoro-4-methoxyphenyl)ethyl] -N'-[2- (5- chloro)pyrazinyl]thiourea N-[2- (2,6-difluoro-4-methoxyphenyl)ethyl] -N'-[2-(6- bromo)pyrazinyl] hiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(3-[6- bromo]pyridazinyl) ]thiourea N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(3-[6- chloro]pyridazinyl) ]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(6- cyano)pyridyl3thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(5- cyano)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(6- cyano) yrazinyl]thiourea N--[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-[2-(3-[6- cyano]pyridazinyl)]thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-(2- [1,3,4-thiadiazoyl] )thiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-(2- benzimidazolyl) hiourea

N-[2-(2,6-difluoro-4-methoxyphenyl)ethyl]-N'-(2- imidazolyl)thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-(2- thiazolyl)thiourea N-[2-(2,6-difluoro-4-ethoxyρhenyl)ethyl]-N'-[2-(4- methyl)thiazolyl] hiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(4,5- dimethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-(2- benzothiazolyl)thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(6- fluoro)benzothiazolyl]thiourea

N-.[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(6- chloro)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N--[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(4-(3- pyridyl)thiazolyl) ]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-[2-(4-(3- nitrophenyl)thiazolyl) ]thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] bromo)pyridyl]thiourea

N-[2- (2,6-difluoro-4-ethoxyphenyl)ethyl] bromo)pyridyl]thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] chloro)pyridyl]thiourea

N-[2-(2,6-difluoro- -ethoxyphenyl)ethyl] methyl)pyridyl]thiourea

N-[2- (2,6-difluoro-4-ethoxyphenyl)ethyl] methyl)pyridyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] trifluoromethyl)pyridyl]thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] trifluoromethyl)pyridyl]thiourea

N-[2- (2,6-difluoro-4-ethoxyphenyl)ethyl] ethyl)pyridyl]thiourea

N-[2- (2,6-difluoro-4-ethoxyphenyl)ethyl] ethyl) yridyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] chloro)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] bromo)pyrazinyl]thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] bromo)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] bromo]pyridazinyl) ]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] chloro]pyridazinyl) ]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] cyano)pyridyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] cyano)pyridyl]thiourea N- [2- (2 , 6-difluoro-4-ethoxyphenyl) ethyl] cyano) yrazinyl]thiourea

N-[2-(2,6-difluoro- -ethoxyphenyl)ethyl] cyano)pyrazinyl]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] cyano]pyridazinyl) ]thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] thiadiazoy1] )thiourea

N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] benzimidazolyl)thiourea N-[2-(2,6-difluoro-4-ethoxyphenyl)ethyl] imidazolyl)thiourea

N-[2-(2-(3-ethoxy)pyridyl)ethyl]-N ^r -[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(3-methoxy)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea N-(2-phenethyl)-N'-[2-(3-ethyl)pyridyl]thiourea

N-[2-(2,6-difluorophenyl)ethyl]-N'-[3-(6- methoxy)pyridazinyl]thiourea

N-[2-(2, -difluoro-3-N-methylcarboxamidephenyl)ethyl]- N'-[2-(5-bromo)pyridyl]thiourea N-[2-(2-fluoro-6τchlorophenyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(5-nitro)pyridyl]thiourea

N-[2-(3-bromo-6-methoxyphenyl)ethyl]-N'-(2- thiazolyl)thiourea (±)N-[2-[(2,6-difluorophenyl)-2-(methyl) ]ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(3-ethoxyphenyl)ethyl]-N'-(2-thiazolyl)thiourea

N-[2-(3-bromo-6-ethoxyphenyl)ethyl]-N'-(2- thiazolyl)thiourea N-[2-(cis-(2-fluoro)phenyl)cyclopropyl]-N'-(2- thiazolyl)thiourea

N-[2-(3-(2-fluoro) yridyl)ethyl]-N'-[2-(5- bromo}pyridyl]thiourea

(±)N-[cis-2-(3-chlorophenyl)cyclopropyl]-N'-[2-(5- chloro)pyrid l]thiourea

(±)N-[cis-2-(3-fluorophenyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-vinyl)phenethyl]-N'-[2-(5- bromo)pyri yl]thiourea N-[2-.3-vinyl)phenethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(3-methoxycarbonyl)phenethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(5,6-dimethylbenzotriazolyl)ethyl]-N'-[2-(5- bromo)pyrid l]thiourea

N-[2-(1-cyclohexenyl)ethyl]-N'-[2-(5,6-dichloro-4- azabenzi idazolyl)]thiourea

N-[2-(2,3-difluoro-6-methoxyphenyl)ethyl]-N'-[2-(5- bromo)pyrid l]thiourea (±)N-[cis-2-(4-methylphenyl)cyclopropyl]-N'-[2-(5- chloro) yridyl]thiourea

(±)N-[cis-2-(2-fluorophenyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

(±JN-[cis-2-(3-cyanophenyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

(±)N-[cis-2-(2,6-difluoro-3-cyanophenyl)cyclopropyl]- N'-[2-(5-chloro)pyridyl]thiourea

(±)-cis-N- (3,4-benzo-cis-bicyclo-[3.1.0]-hexen-6-yl)- N'-[2- (5-chloro)pyridyl]thiourea N-[2- (3-ethynylphenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2,5-diethoxyphenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2- (2-methoxyphenyl)ethyl]-N'-[4-(6- aminopyrimidiny1) ]thiourea

N-[2-(2-methoxyphenyl)ethyl]-N'-(4- pyri idinyl)thiourea

(±)N-[2-(cis-2-pyridyl) ]-N'-[2-(3- pyridazinyl) ]thiourea (±)N-[2-(cis-2-pyridyl)]-N'-[2-(3-(6- ethyl)pyridazinyl) ]thiourea

(±)N-[2-(cis-2-pyridyl) ]-N'-(2-pyrazinyl)]thiourea

(±)N-[2-(cis-2-pyridyl) ]-N'-[2-(5- methyl)pyrazinyl) ]thiourea (±)N-[2-(cis-2-(3-fluoro)pyridyl)]-N'-[2- (3- pyridazinyl) ]thiourea

(±)N-[2-(cis-2-(3-fluoro)pyridyl) ]-N'-[2-(3-(6- methyl)pyridazinyl) ]thiourea

(±)N-[2-(cis-2-(3-fluoro)pyridyl)]-N'-(2- pyrazinyl) ]thiourea

(±)N-[2-(cis-2-(3-fluoro)pyridyl)]-N'-[2-(5- methyl)pyrazinyl)]thiourea

N-(2-cis-phenylcyclopropyl)-N'-[2-(3- pyridazinyl) ]thiourea N-(2-cis-phenylcyclopropyl)-N'-[2-(3-(6- methyl)pyridazinyl) ]thiourea

N-(2-cis-phenylcyclopropyl)-N'-(2-pyrazinyl) ]thiourea

N-(2-cis-phenylcyclopropyl)-N'-[2-(5- methyl)pyrazinyl)]thiourea N-[2-(cis-2-fluorophenyl)cyclopropyl)]-N'-[2-(3- pyridazinyl) ]thiourea

N- ^' [2-(cis-2-fluorophenyl)cyclopropyl)]-N'-[2-(3-(6- methyl)pyridazinyl) ]thiourea

N-[2-(cis-2-fluorophenyl)cyclopropyl) ]-N'-(2- pyrazinyl) ]thiourea

N-[2-(cis-2-fluorophenyl)cyclopropyl) ]-N'-[2-(5- methyl)pyrazinyl) ]thiourea

N-[2-(cis-2,6-difluorophenyl)cyclopropyl) ]-N'-[2-(3- pyridazinyl) ]thiourea N-[2-(cis-2,6-difluorophenyl)cyclopropyl) ]-N'-[2-(3- (6-methyl)pyridazinyl) ]thiourea

N-[2-(cis-2,6-difluorophenyl)cyclopropyl)]-N'-(2- pyrazinyl)]thiourea

N-[2-(cis-2,6-difluorophenyl)cyclopropyl) ]-N'-[2-(5- methyl)pyrazinyl) ]thiourea N-[2-(cis-3-methoxyphenyl)cyclopropyl)]-N"-[2-(3- pyridazinyl) ]thiourea

N-[2-(cis-3-methoxyphenyl)cyclopropyl) ]-N'-[2-(3-(6- methyl)pyridazinyl)]thiourea

N-[2-(cis-3-methoxyphenyl)cyclopropyl)]-N'-(2- pyrazinyl)]thiourea

N-[2-(cis-3-methoxyphenyl)cyclopropyl)]-N'-[2-(5- ^• methyl)pyrazinyl)]thiourea

The following are more preferred compounds.

N-(2-phenethyl)-N'-[2-(5-bromo)pyridyl]thiourea N-(2-phenethyl)-N'-[2-(5-chloro)pyridyl]thiourea

N--(2-phenethyl)-N'-[2- (5-chloro)pyrazinyl]thiourea N-(2-phenethyl)-N'-[2- (5-bromo)pyrazinyl]thiourea N-(2-phenethyl)-N'-[ (3-(6-chloro)pyridazinyl)]thiourea N-(2-(2-methoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-methoxyphenyl)ethyl)-N'-[2- (5- bromo)pyrazinyl]thiourea

N-(2-(2-methoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea N- (2-(3-methoxyphenyl)ethyl)-N--[2- (5- chloro)pyrazinyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N- (2-(2-ethoxyphenyl)ethyl) -N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N- (2-(2-ethoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(5- bromo) yrazinyl]thiourea

N- (2- (2-ethoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea N-(2-(2-methylphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N- (2- (2-methylphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[2-(6- chloro)pyridyl]thiourea

N- (2-(2-methylphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea N- (2-(2-methylphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2-methylphenyl)ethyl)-N'-[ (3-(6- chloro) yridazinyl) ]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea N-(2-(2-fluorophenyl)ethyl)- '-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea N-(2-(2-fluorophenyl)ethyl) -N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2-fluorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2- thiazolyl)thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- methyl)thiazolyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-(2-pyridyl)thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(6- bromo)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- methyl)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- trifluoromethyl)pyridyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- ethyl)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N*-[2-{5- cyano)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N"-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N- (2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea N-(2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N- (2-(2-fluoro-6-ethoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea

N- ^* (2-(2-chlorophenyl)ethyl)-N'- 2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-chlorophenyl)ethyl) -N'- 2-(5- bromo)pyrazinyl]thiourea N-(2-(2-chlorophenyl)ethyl) -N'- (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'- 2-(5- chloro)pyrazinyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'- 2-(5- bromo)pyrazinyl]thiourea

N- (2-(3-chlorophenyl)ethyl)-N'- (3-(6- chloro)pyridazinyl) ]thiourea N-(2-(1-cyclohexenyl)ethyl)-N'- 2-thiazolyl)thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'- 2-(4- methyl)thiazolyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'- 2-pyridyl)thiourea N-(2-(1-cyclohexenyl)ethyl) -N'- 2-(5- methyl)pyridyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'- 2-(5- trifluoromethyl)pyridyl]thiourea

N-.(2-(1-cyclohexenyl)ethyl)-N'- 2-(5- ethyl)pyridyl]thiourea N-(2-(1-cyclohexenyl)ethyl)-N'- 2-(5- chloro)pyrazinyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(5- cyano)pyridyl]thiourea N-(2-(1-cyclohexenyl)ethyl)-N'-[2- (5- cyano)pyrazinyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[ (3-(6- cyano)pyridazinyl)]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl] hiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl]thiourea

N-(2-(2-fluoro-6-chlorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl)]thiourea N-(2-(2, -dimethoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl].thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N'-[2- (5- bromo)pyrazinyl]thiourea

N-(2-(2,6-dimethoxyphenyl)ethyl)-N' -[ (3- (6- chloro)pyridazinyl) ]thiourea N-(2-(2,6-dichlorophenyl)ethyl)-N ¹ -[2-(4- cyano) hiazolyl] hiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl] hiourea

N-(2- (2,6-dichlorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-.(2-(2,6-dichlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea N-(2-(2,6-dichlorophenyl)ethyl)-N'-[2- (5- chloro)pyrazinyl]thiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N'-[2-(5- bromo)pyrazinyl] hiourea

N-(2-(2,6-dichlorophenyl)ethyl)-N'-[ (3- (6- chloro)pyridazinyl) ]thiourea

N-(2-(3-fluorophenyl)ethyl) -N'- 2-(4- cyano)thiazolyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea N- (2- (3-fluorophenyl)ethyl)-N'- 2-(4- ethyl)thiazolyl]thiourea

N-(2-(3-fluorophenyl)ethyl)-N'- 2-(5- bromo)pyridyl]thiourea

N- (2-(3-fluorophenyl)ethyl)-N'- 2-(5- chloro)pyridyl]thiourea

N-(2-(3-fluorophenyl)ethyl) -N'- 2-(5- chloro)pyrazinyl]thiourea

N-(2-(3-fluorophenyl)ethyl)- ^■ - 2-(5- bromo)pyrazinyl]thiourea N-(2-(3-fluorophenyl)ethyl)-N'- (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-cis-phenylcyclopropyl)-N'- 2-thiazolyl)thiourea

N-(2-cis-phenylcyclopropyl)-N'- 2-(4- cyano)thiazolyl]thiourea N-(2-cis-phenylcyclopropyl)-N'- 2-(4- trifluoromethyl)thiazolyl]thiourea

N- (2-cis-phenylcyclopropyl)-N'- 2-(5- methyl)pyridyl]thiourea

N- (2-cis-phenylcyclopropyl)-N ¹ - 2-(4- ethyl)thiazolyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'- 2-pyridyl)thiourea

N-(2-cis-phenylcyclopropyl) -N ^* -[2- (5- trifluoromethyl)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl) -N'-[2-(5- ethyl)pyridyl]thiourea N-(2-cis-phenylcyclopropyl) -N'-[2-(5- chloro)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl) -N"-[2-(5- bromo)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl) -N'-[ (3-(6- bromo)pyridazinyl) ]thiourea

N-(2-cis-phenylcyclopropyl) -N'-[ (3-(6- chloro)pyridazinyl) ] hiourea

N- (2-cis-phenylcyclopropyl) -N'-[2- (5- cyano)pyridyl]thiourea N-[2-(2-pyridyl)ethyl] -N' -(2-thiazolyl)thiourea

N-[2-(2-pyridyl)ethyl]- '-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2- (4- cyano)thiazolyl]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2- (2-pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-pyridyl)ethyl] -N'-(2-pyridyl)thiourea N-[2- (2-pyridyl)ethyl] -N'-[2-(6-bromo)pyridyl]thiourea

N-[2-(2-pyricϊyl)ethyl]-N'-[2-(6- chloro)pyridyl]thiourea

N-[2-(2-pyridyl)ethylJ-N ^• -[2-(6- methyl)pyridyl]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl]thiourea

N-[2-(2-pyriόyl)ethyl]-N'-[2-(6- trifluoromethyl) yridyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(6-ethyl)pyridyl]thiourea N-[2-(2-pyridyl)ethyl]-N--[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(5- bro o) yrazinyl]thiourea

N-[2-(2-pyriαyl)ethyl]-N'-[(3-(6- bromo)pyridazinyl) Ithiourea

N-[2-(2-pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(5-cyano)pyridyl]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2- (5- cyano)pyrazinyl]thiourea

N-[2- (2-pyridyl)ethyl]-N'-[ (3-(6- cyano)pyridazinyl)] hiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2- (2-(6-methoxy)pyridyl)ethyl]-N'-(2- pyridyl)thiourea N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N ¹ -[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[ (3- (6- chloro)pyridazinyl) ]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2- (4- ethyl) hiazolyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2- (4- ethyl)thiazolyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(5- methyl)pyridyl] hiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2- (5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2- (2-(6-ethoxy)pyridyl)ethyl]-N'-[2- (5- bromo)pyrazinyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[ (3-(6- chloro) yridazinyl) ] hiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-(2- thiazolyl)thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl3thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl3-N'-(2- pyridyl)thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl) yridy1] hiourea

N-[2-(2-(6-fluoro)pyridyl)ethylj-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(6- ethyl)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro) yrazinyl]thiourea N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N ¹ -[(3-(6- chloro)pyridazinyl)]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- cyano)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N*-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-.[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl1thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl)]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2- (5- chloro)pyrazinyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2- (5- bromo)pyrazinyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[ (3- (6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- methyl)thiazolyl] hiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2- (4- cyano)thiazolyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N"-[2-(4- trifluoromethyl)thiazolyl]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-(2- pyridyl)thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2- (2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N"-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4- cyano)thiazolyl]thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- bro o)pyrazinyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2- (4- cyano)thiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N"-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-(2- pyridyl)thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- methyl)pyrid l]thiourea N-[2-(cis-2-pyridyl)cyclopropyl]-N--[2-(5- trifluoromethyl)pyridyl] hiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- ethyl)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2- (5- bro o)pyrazinyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[ (3-(6- chloro)pyridazinyl)]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(cis-2-(6-fluoro) yridyl)cyclopropyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-(2- pyridyl)thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- methyl)pyridyl]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N*-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-f5- chloro)pyrazinyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyrazinyl]thiourea N-[2-(cis-2-(6-methox )pyridyl)cyclopropyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4- cyano)thiazolyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(4- ethyl)thiazolyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyrazinyl]thiourea N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyrazinyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

The following are most preferred compounds,

N-(2-(2-methoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl] hiourea N-(2-(2-methoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2- (2-methoxyphenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2-methoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-methoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(4- ethyl) hiazolyl] hiourea N-(2-(3-methoxyphenyl)ethyl)-N"-[2-(5- bro o)pyridyl]thiourea

N-(2-(3-methoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-ethoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2,6-difluorophenyl)ethyl)- '-[2-(5- bromo)pyrazinyl]thiourea N-(2-(2,6-difluorophenyl)ethyl)-N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-fluoro-6-methoxyphenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea N-(2-(2-chlorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(2-chlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(4- cyano)thiazolyl] hiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(4- ethyl)thiazolyl]thiourea

N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea N-(2-(3-chlorophenyl)ethyl)-N'-[2-(5- chloro)pyridyl] hiourea

N- (2-(1-cyclohexenyl)ethyl) -N'-[2-(4- cyano)thiazolyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(4- trifluoromethyl)thiazolyl]thiourea N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(4- ethyl) hiazolyl] hiourea

N-(2-(l-cyclohexenyl)ethyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-(1-cyclohexenyl)ethyl)-N'-[2-(5- chloro) yridyl]thiourea

N-(2-(1-cyclohexenyl)ethyl) -N'-[ (3-(6- chloro)pyridazinyl) ]thiourea

N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2- (5- chloro)pyrazinyl]thiourea N-(2-(2,5-dimethoxyphenyl)ethyl)-N'-[2- (5- bromo)pyrazinyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'-[2-(5- bromo)pyridyl]thiourea

N-(2-cis-phenylcyclopropyl)-N'-[2-(5- chloro)pyridyl] hiourea

N-[2- (2-pyridyl)ethyl]-N'-[2- (5-bromo)pyridyl]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(5- trifluoromethyl)pyridyl]thiourea

N-[2-(2-pyridyl)ethyl]-N'-[2-(5-ethyl)pyridyl]thiourea N-[2-(2-pyridyl)ethyl]-N'-[2-(5- methy1)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(6-methoxy)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2- (5- bromo)pyridyl]thiourea N-[2-(2-(6-ethoxy)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2- (2-(6-fluoro)pyridyl)ethyl]-N'-[2- (5- chloro)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(3-fluoro)pyridyl)ethyl]-N'-[2- (5- chloro)pyridyl]thiourea N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(5- bro o)pyri.dyl]thiourea

N-[2-(2-(6-chloro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea N-[2-(2-(3-methoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- bro o)pyridyl]thiourea

N-[2-(2-(5-ethoxy-6-fluoro) yridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiour a

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- ^* bromo)pyridyl]thiourea

N-[2-(2-(3-ethoxy-6-fluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(2-(3,6-difluoro)pyridyl)ethyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(cis-2-pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyridyl]thiourea N-[2-(cis-2-(6-fluoro)pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(cis-2-(6-methoxy)pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- bromo)pyridyl]thiourea

N-[2-(cis-2-(6-ethoxy)pyridyl)cyclopropyl]-N'-[2-(5- chloro)pyridyl]thiourea N-[2-(2,6-difluoro-3-methoxyphenyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea

Especially preferred is N-[2-(2-pyridyl)ethyl]- N'-[2-(5-bromo)pyridyl]thiourea, and its hydrochloride salt.

As mentioned above, the invention includes pharmaceutically acceptable salts of the compounds defined by the above formula (I) . Although generally neutral, a

particular compound of this invention can possess a sufficiently acidic, a sufficiently basic, or both, functional groups, and accordingly react with any of a number of nontoxic inorganic bases, and nontoxic inorganic and organic acids, to form a pharmaceutically acceptable salt. Acids commonly employed to form acid addition salts are inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, phosphoric acid and the like, and organic acids such as p-toluene sulfonic, methanesulfonic acid, oxalic acid, p-bromophenylsulfonic acid, carbonic acid, succinic acid, citric acid, benzoic acid, acetic acid, and the like. Examples of such pharmaceutically acceptable salts thus are the sulfate, pyrosul ate, bisulfate, sulfite, bisulfite, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate, chloride, bromide, iodide, acetate, propionate, decanoate, caprylate, acrylate, formate, isobutyrate, caproate, heptanoate, propiolate, oxalate, malonate, succinate, suberate, sebacate, fumarate, maleate, butyne-1,4-dioate, hexyne-1,6-dioate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, hydroxybenzoate, methoxybenzoate, phthalate, sulfonate, xylenesulfonate, phenylacetate, phenylpropionate, phenylbutyrate, citrate, lactate, g-hydroxybutyrate, glycollate, tartrate, methanesulfonate, propanesulfonate, naphthalene-1-sulfonate, naphthalene-2-sulfonate, mandelate and the like. Preferred pharmaceutically acceptable acid addition salts are those formed with mineral acids such as hydrochloric acid and hydrobromic acid, and those formed with organic acids such as maleic acid and methanesulfonic acid.

Base addition salts include those derived from inorganic bases, such as ammonium or alkali or alkaline earth metal hydroxides, carbonates, bicarbonates, and the like. Such bases useful in preparing the salts of this invention thus include sodium hydroxide, potassium hydroxide, ammonium hydroxide, potassium bicarbonate, calcium hydroxide, calcium carbonate, and the like.

The pharmaceutically acceptable salts of the invention are typically formed by reacting a compound as defined with an equimolar or excess amount of acid or base. The reactants are generally combined in a mutual solvent such as diethyl ether or benzene, for acid addition salts, or water or alcohols for base addition salts, and the salts normally precipitate out of solution within about one hour to about ten days and can be isolated by filtration or other conventional methods. The salts of the compounds of the invention will convert to the compound per se after administration and are thus prodrugs. All prodrugs are administered in an amount sufficient to generate an effective amount of the compound to contact the virus and interact with it (e.g. inhibit replication thereof) .

The compounds of the present invention also include racemates, racemic mixtures, and individual enantiomers or diastereomers. All asymmetric forms, individual isomers and combinations thereof are within the scope of the present invention.

As noted, the optically active diastereomers of the compounds of Formula 1 are considered part of this invention and such optically active isomers may be prepared from their respective optically active precursors by the procedures described herein, or by resolving the racemic

mixtures. - The resolution can be carried out in the presence of a resolving agent, by chromatography, by repeated crystallization or by some combination of these techniques which are known to those skilled in the art. Further details regarding resolutions can be found in

Jacques, et al., Enantiomers. Racemates, and Resolutions.

John Wiley & Sons 1981.

The compounds of the present invention, or their precursors, are prepared using procedures known to those of ordinary skill in art. More particularly, the compounds of Formula (1) are prepared according to the procedures shown below in Schemes I, II, and III, and as described following the Schemes.

SCHEME I

(3)

In Scheme I, a derivative of isothiocyanate (1) is reacted with an amino group (2) in approximately 1:1 molar ratio, in an inert organic solvent such as N,N- dimethyl formamide and stirred at an appropriate temperature of between about 0-150°C for a period of time between about 1 and 72 hours. The time and temperature used depends upon the _. reactivity of the individual reagents. The product (3) may be isolated by conventional techniques.

Scheme II

(3) Scheme II is run under the same general reaction conditions as Scheme I.

Sghgme HI

Scheme III is a process analogous to that described in J. Qrg. Chem. .Vol. 49, 4123 (1984) herein incorporated by reference.

The compounds employed as initial starting materials in the synthesis of the compounds of this invention- are well known and, to the extent not commercially available, are readily synthesized by standard procedures commonly employed by those or ordinary skill in the art.

Other teaching for preparing the compounds of the invention may be found in Organic Synthesis. 5., 69 (1965); Synthesis. 231 (1974); Journal of the American Chem. Society. 21. 1236 (1957); and Organic Synthesis. 2ϋ# 69, (1940), and Synthesis. May 1983, p. 391, incorporated herein by reference. Tests with the above compounds of Formula 1 have indicated activity as inhibitors of HIV. While not being bound by theory, it is believed that the compounds act as

reverse transcriptase inhibitors, and thereby act to inhibit replication of the virus.

The following is a description of the test systems used in analyzing compounds in effectiveness against HIV.

Tests A. B. C . and D (XTT)

MT4 cells in a medium of RPMI 1640, 5% FCS, penicillin/streptomycin are adjusted to 2xl0 ⁵ cells/ml and seeded into microplates (96 wells/plate) 100 ml cell suspension/well giving 2x10 ⁴ cells/well. The compound to be tested is made into a 10 mg/ml mixture in DMSO and stored at -20°C. The compound in DMSO is diluted with medium containing 10% DMSO in a 10-fold dilution series to give 1 mg/ml, 10 mg/ml, and 100 mg/ml solutions. Further dilutions to 400, 40, 4 and 0.4 mg/ml are made in medium containing microplates. Fifty ml of the 400, 40, and 4 mg/ml are transferred to the cell-containing microplates with a multi-channel pipette (final concentration: 100, 10, and 1 mg/ml) . Finally, 50 ml of virus suspension is added to each well (with a repetitive "Eppendorf" multipipett) . Each plate has at least six wells with the following: [Test A: HIV virus; Test B: HIV(II) virus; Test C: SIV virus; Test D: No virus] ; with no drug (virus control) and six wells without virus (medium control) . The plate is put into a plastic bag and incubated for six days in C02 atmosphere. To each well in the plate is added 50 ml of XTT ( (2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-5- [ (phenylamino)carbonyl]-2H-tetrazolium hydroxide), (1 mg/ml 0.01-0.02 mM N-metyl-phenazonium methosulfate) . After six hours of incubation in CO2 atmosphere the plates are covered with adhesive plate sealers and gently mixed on a

vortex. Optical densities are determined at a wavelength of 450 nm and a reference wavelength of 650 nm. The percent reduction of cytotoxocity caused by the virus infection is calculated as follows:

OD450 compound - OD450 inf cells x 100

OD450 uninf cells - OD450 inf cells

Tests E. F, G. H (HIV-IRT, HIV-2RT, SIVRT, no virus)

MT-4/H9-cells are adjusted to 2xl0 ⁵ cels/ml medium (RPMI 1640, 5% FCS, penicillin/streptomycin) and seeded into microplates (96 wells/plate) 100 ml cell suspension/well giving 2 x 10^ cells/well. The compound to be tested is made 10 mg/ml in DMSO = stock solution (stored at -20°C) . The compound dissolved in DMSO is diluted 25 times in medium to give 400 mg/ml. Further dilutions to 40 mg/ml and 4 mg/ml are made in microplates.

50 ml of the dilutions 400 mg/ml, 40 mg/ml and 4mg/rnl are transferred to the "cell-containing" microplate with a multichannel pipette. (Final concentration: 100, 10 and 1 mg/ml) .

Finally 50 ml of virus suspension is added to each well (with a repetitive "Eppendorf multipett"). [Test E-HIV-1; Test F-HIV-2; Test G-SIV; Test H-no virus].

Each plate has at least four wells with virus but no drug (virus control) and two wells without virus

(medium control) . The plate is put into a plastic bag to avoid evaporation and incubated for six days in CO2- atmosphere. 10 ml supernatant from each well is transferred with a multichannel pipette into a new

microplate to which 40 ml VDB, (50 mM Tris-HCl pH = 7.6, 35 mM KC1, 4 mM DTT, 1 mM EDTA, 1.3% Triton X-100) , have been added to each well. The addition of 50 ml RT-reaction mix, (10 ml culture supernatant, 40 ml VDB and 50 ml reaction mixture giving a final concentration of: 100 mM Tris-HCl pH = 7.6, 100 mM KCl, 4 mM MgCl2, 4 mM DTT, 275 mg/ml BSA/ml, 5 mg (rA) _n (dT) 2-l8/πιl and 0.3 mM ³ H dTTP (specific activity 18.000 cpm/pmol)) gives a final volume of 100 ml/well. After 60 minutes of incubation the whole assay volume is transferred by use of a cell harvester to a filter mat prewetted with 5% TCA. The filter is washed in 5% TCA and rinsed once in ethanol. After drying the filter mat at 60°C for 30 min. each filter (96/mat) is punched out and put into counting vials 2 ml of scintillation fluid is added and the samples are counted (1 min) or the whole filter mat is put into a plastic bag, 10 ml of scintillation fluid is added and the filter mat is counted in a Beckman Betaplate counter. Percent reduction of RT activity is determined by comparing RT activity for virus control with the RT activity measured for each dilution of the compound.

Test I (HIVRT (rAdt) )

The compounds were tested for direct inhibitory activity on HIV-RT in a volume of 100 ml recombinant HIV-RT (diluted in virus disruption buffer to give 200.000 cpm) . 100 mM Tris-HCl pH 7.6, 100 mM KCl, 4 mM MgCl2, 4 mM DTT, 275 mg/ml BSA, 0.5 mg (rA)n(dT)12-18 and 0.3 mM ³ H-=dTTP (specific activity 18.000 cpm/mol) . After 60 minutess of incubation 40 ml in duplicate were spotted on paper discs and washed in 5% TCA. After rinsing the paper

discs in ethanol they were dried and counted in scintillation fluid.

The following Tables illustrate activities of compounds in the above-described tests. The numbers represent % inhibition.

Table Al

Table A2

Table A2 (continued)

Table A2 (continued)

Table A2 (continued)

Table A2 (continued)

Table A2 (continued)

Table A2 (continued)

Table A2 ( ^" continued)

Table A2 (continued)

Table A2 (continued)

Table A2 (continued)

Table A3

Table A4

Table A4 (continued)

Tab A5

Table A5 (continued)

A feature of this invention also disclosed is a method of administering to a human in need thereof the compounds of the invention or their pharmaceutically acceptable salts to treat or inhibit HIV/AIDS, to inhibit the replication of the HIV/AIDS virus in infected human cells and to inhibit AIDS from developing in humans infected with the HIV/AIDS virus or carrying antibodies to the HIV/AIDS virus.

The present invention also discloses the compounds of the invention and their salts for use in the treatment of the condition referred to above, as well as the use of such compounds in the preparation of pharmaceutical formulations for the treatment of such conditions. . In general for the treatment as described above, a suitable effective dose of the compound or its pharmaceutically acceptable salt will be in the range of 0.5 to 250 mg per kilogram bodyweight of recipient per day. Administration may be by any suitable route including oral, rectal, nasal, topical (including buccal and sublingual) , vaginal or parenteral (including subcutaneous, intramuscular, intravenous and intradermal) administration. It will be appreciated that the preferred route may vary with, for example, the condition, age, and weight of the recipient.

The administered ingredients may be used as a therapy in conjunction with other therapeutic agents, (other anti-virals, anti-bacterials, compounds useful for preventing resulting secondary or contemporaneous afflictions associated with HIV/AIDS) such as AZT, ddl, ddC, 9-[ [2-hydroxy-l-(hydroxymethyl)ethoxy]methyl]guanine,

9-(2-hydroxyethoxymethyl)guanine(acyclovir) , 2-amino-9-(2- hydroxyethoxymethyDpurine, suramin, ribavarin, antimoniotungstate (HPA-23), interferon, e.g., a interferon, interleukin II, and phosphonoformate (Foscamet) or in conjunction with other immune modulators including bone marrow or lymphocyte transplants or other medications such as levamisol or thymosin which would increase lymphocyte numbers and/or function as is appropriate. For example, in an evaluation of the combination of AZT and a compound of the formula

a synergistic effect was observed. The combination was evaluated against HIV-1 in CEM cells using the technique of Prichard and Shipman (Antiviral Research, 14, 181-206 (1990)) . The peak of synergy was observed at 0.5 μg/ml of the compound of the formula above and 0.005 μg/ml of AZT. While it is possible for the administered ingredients to be administered alone, it is preferable to present them as part of a pharmaceutical formulation. The formulations of the present invention comprise at least one administered ingredient, as above-defined together with one or more acceptable carriers thereof and optionally other therapeutic ingredients. The carrier(s) must be "acceptable" in the sense of being compatible with the

other ingredients of the formulation and not deleterious to the recipient thereof.

The formulations include those suitable for oral, rectal, nasal, topical (including buccal and sublingual), vaginal or parenteral (including subcutaneous, intramuscular, intravenous and intradermal) administration. The formulations may conveniently be presented in unit dosage form, e.g., tablets and sustained release capsules, and may be prepared by any methods well known in the art of pharmacy.

Such methods include the step of bringing into association the to be administered ingredients with the carrier which constitutes one or more accessory ingredients. In general, the formulations are prepared by uniformly and intimately bringing into association the active ingredients with liquid carriers or finely divided solid carriers or both, and then if necessary shaping the product.

Formulations of the present invention suitable for oral administration may be presented as discrete units such as capsules, cachets or tablets each containing a predetermined amount of the active ingredient; as a powder or granules; as a solution or a suspension in an aqueous liquid or a non-aqueous liquid; or as an oil-in-water liquid emulsion or a water-in-oil liquid emulsion and as a bolus, etc.

With regard to compositions for oral administration (e.g. tablets and capsules), the term "suitable vehicle" means common excipientε such as binding agents, for example, syrup, acacia, gelatin, sorbitol, tragacanth, polyvinylpyrrolidine (Povidone) ,

methylcellulose, ethylcellulose, sodium carboxy¬ methylcellulose, hydroxypropylmethylcellulose, sucrose and starch; fillers and carriers, for example corn starch, gelatin, lactose, sucrose, microcrystalline cellulose, kaolin, mannitol, dicalcium phosphate, sodium chloride and alginic acid; disintegrators such as microcrystalline cellulose, corn starch, sodium starch glycolate, alginic acid; and lubricants such as magnesium stearate and other metallic stearates, stearic acid, silicone fluid, talc, waxes, oils and colloidal silica. Flavoring agents such as peppermint, oil of wintergreen, cherry flavoring or the like can also be used. It may be desirable to add a coloring agent to make the dosage form more aesthetically pleasing in appearance or to help identify the product. The tablets may also be coated by methods well known in the art.

A tablet may be made by compression or molding, optionally with one or more accessory ingredients. Compressed tablets may be prepared by compressing in a suitable machine the active ingredient in a free-flowing form such as a powder or granules, optionally mixed with a binder, lubricant, inert diluent, preservative, surface- active or dispersing agent. Molded tablets may be made by molding in a suitable machine a mixture of the powdered compound moistened with an inert liquid diluent. The tablets may optionally be coated or scored and may be formulated so as to provide slow or controlled release of the active ingredient therein.

Formulations suitable for topical administration include lozenges comprising the ingredients in a flavored basis, usually sucrose and acacia or tragacanth; pastilles

comprising the active ingredient in an inert basis such as gelatin and glycerin, or sucrose and acacia; and mouthwashes comprising the ingredient to be administered in a suitable liquid carrier. Formulations suitable for topical administration to the skin may be presented as ointments, creams, gels and pastes comprising the ingredient to be administered and a pharmaceutically acceptable carrier. An exemplary topical delivery system is a transdermal patch containing the ingredient to be administered.

Formulations for rectal administration may be presented as a suppository with a suitable base comprising, for example, cocoa butter or a salicylate.

Formulations suitable for nasal administration wherein the carrier is a solid include a coarse powder having a particle size, for example, in the range 20 to 500 microns which is administered in the manner in which snuff is taken, i.e., by rapid inhalation through the nasal passage from a container of the powder held close up to the nose. Suitable formulations wherein the carrier is a liquid, for administration, as for example, a nasal spray or as nasal drops, include aqueous or oily solutions of the active ingredient.

Formulations suitable for vaginal administration may be presented as pessaries, tampons, creams, gels, pastes, foams, or spray formulations containing in addition to the active ingredient such carriers as are known in the art to be appropriate.

Formulations suitable for parenteral administration include aqueous and non-aqueous sterile injection solutions which may contain anti-oxidants,

buffers, bacteriostats and solutes which render the formulation isotonic with the blood of the intended recipient; and aqueous and non-aqueous sterile suspensions which may include suspending agents and thickening agents. The formulations may be presented in unit-dose or multi- dose containers, for example, sealed ampules and vials, and may be stored in a freeze-dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, or example water for injections, immediately prior to use. Extemporaneous injection solutions and suspensions may be prepared from sterile powders, granules, and tablets of the kind previously described.

Preferred unit dosage formulations are those containing a daily dose or unit, daily sub-dose, as herein above recited, or an appropriate fraction thereof, of the administered ingredient.

The antiviral compounds of Formula I can be used as surface disinfectants. Solutions containing as little as 0.1 percent by weight of the antiviral compound maybe effective for disinfecting purposes. Preferably, such solutions also can contain a detergent or other cleansing agent. The solutions maybe useful for disinfecting objects such as glassware, dental and surgical instruments, and surfaces such as walls, floors, and tables in areas where maintenance of sterile conditions is important, for example., hospitals, food-preparation areas, and the like.

In practicing the method for treating or inhibiting HIV and/or AIDS, the antiviral can be administered in a single daily dose or in multiple doses per day. The treatment regime may require administration over extended periods of time, e.g., for several days or

for several months or years. The amount administered per dose or the total amount administered will depend on such factors as the nature and severity of the infection, the age and general health of the patient, the tolerance of both the patient and the microorganism or microorganisms involved in the infection to the antiviral compound.

The following formulation examples represent specific pharmaceutical formulations employing compounds comprehended by the present method. The formulations may employ as active compounds any of the compounds of Formula I or a pharmaceutically acceptable salt thereof. The examples are illustrative only and are not intended to limit the scope of the invention in any way.

Formulation 1

Hard gelatin capsules are prepared using the following ingredients:

Quantity (mσ/capsule)

Compound 1250 Starch dried 200

Magnesium stearate 10

The above ingredients are mixed and filled into hard gelatin capsules in 460 mg quantities.

Fprmulation 2 A tablet formula is prepared using the ingredients below:

Quantity (mg/tablet) Compound 250

Cellulose, microcrystalline 400

Silicon dioxide, fumed 10

Stearic acid 5

Magnesium stearate 10 The components are blended and compressed to form tablets each weighing 675 mg.

Formulation 3 An aerosol solution is prepared containing the following components: eight Compound 0.25

Ethanol 29.75

Propellant 22 70.00 (Chlorodifluoromethane)

The active compound is mixed with ethanol and the mixture added to a portion of the propellant 22, cooled to -30°C and transferred to a filling device. The required amount is then placed in a stainless steel container and diluted with the remainder of the propellant. The valve units are then fitted to the container.

Formulation 4 Tablets each containing 60 mg of active ingredient are made up as follows:

Compound 60 mg

Starch 45 mg

Microcrystalline cellulose 35 mg

Polyvinylpyrro1idone

(as 10% solution in water) 4 mg Sodium carboxymethyl starch 4.5 mg

Magnesium stearate 0.5 mg

Talc 1 mg

The active ingredient, starch and cellulose are passed through a No. 45 mesh U.S. sieve and mixed thoroughly. The solution of polyvinylpyrrolidone is mixed with the resultant powders which are then passed through a No. 14 mesh U.S. sieve. The granules so produced are dried at 40°-60°C and passed through a No. 18 mesh U.S. sieve. The sodium carboxymethyl starch, magnesium stearate and talc, previously passed through a No. 60 mesh U.S. sieve, are then added to the granules which, after mixing, are compressed on a tablet machine to yield tablets each weighing 150 mg.

Formulation 5

Capsules each containing 80 mg of medicament are made as follows:

Compound 80 mg

Starch 59 mg Microcrystalline cellulose 59 mg

Silicone fluid 2 mg

The active ingredient, cellulose, starch and magnesium stearate are blended, passed through a No. 45 mesh U.S. sieve, and filled into hard gelatin capsules in 200 mg quantities.

Formulation 6

Suppositories each containing 225 mg of medicament are made as follows:

Compound 225 mg

Saturated fatty acid glycerides 2 mg

The active ingredient is passed through a No. 60 mesh U.S. sieve and suspended in the saturated fatty acid glycerides previously melted using the minimum heat necessary. The mixture is then poured into a suppository mold of nominal 2 g capacity and allowed to cool.

Formulation 7 As intravenous formulation is prepared as follows:

Compound 100 mg

Isotonic saline 1000 ml

The solution of the above ingredients is administered intravenously at a rate of 1 ml/minute to a mammal in need of treatment.

It should be understood that in addition to the ingredients particularly mentioned above the formulations of this invention may include other agents conventional in the art having regard to the type of formulation in question.

The following examples further illustrate the compounds of the present invention and methods for the synthesis. The examples are not intended to be limiting to the scope of the invention in any respect and should not be so construed.

Examples and Procedures The following are experimen als illustrating methods for preparing the compounds of the invention.

Example 1 N-(2-Phenethvl)-N ¹ -F2-(1.3, -thiadiazolyl) 1 thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-l,3,4-thiadiazole (2.02 g, 20 mmol) in N,N-dimethylformamide (50 mL) was heated to 100 C. After 68 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, and water. The organic layer was filtered and the solid obtained (2.24 g) triturated with ethyl acetate to provide 1.9 g (36%) of the title product :

mp 210-211.5 C;

IR (KBr, cm ^"1 ) 3320, 2924, 2869, 2685, 1645, 1543, 1453,

1384, 1344, 1278, 762, 749, 700, 650;

- ^• -H NMR ^* (3()0 MHz, DMSO- 6) δ 12.35 (br s, IH) , 8.92 (s, IH) , 8.78 (br s, IH) , 7.38-7.18 (m, 5H) , 3.84-3.72 (m, 2H) , 2.92 (t, J=6 Hz, 2H) ; MS (FD) m/e 264 (M+) ; UV (EtOH) 277nm, 253nm, 205nm.

Anal. Calcd for C11H12N4S2: Theory: C, 49.98; H, 4.57; N, 21.19.

Found: C, 50.07; H, 4.66; N, 21.48.

Example 2 N-(2-Phenethvl)-N'-T .5-dimethyl-(2-thiazolvl) 1 thiourea

2-Amino-4,5-dimethylthiazole hydrochloride (3.3 g, 20 mmol) was slurried with methylene chloride and shaken with saturated sodium bicarbonate solution. The layers were separated and the aqueous washed with methylene chloride (2x) . The combined organics were dried over magnesium sulfate, filtered and concentrated. To the resulting solid was added 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2V,N-dimethylformamide (50 mL) . The resulting o solution was heated to 100 C. After 95.25 h, the reaction

was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, and water

(2x) . The organic layer was filtered and the solid obtained (3.9 g) recrystallized from ethyl acetate to provide 3.3 g

(57%) of the title product: mp 186-7°C;

IR (KBr, cm ^-1 ) 3166, 3022, 1523, 1502, 1289, 1215, 737, 695; NMR (300 MHz, DMSO-dβ) δ 11.42 (br s, IH) , 9.83 (br S,

IH) , 7.36-7.16 (m, 5H) , 3.86-3.73 (m, 2H) , 2.91 (t, J=7 Hz,

2H) , 2.19 (s, 3H), 2.08 (s, 3H) ;

MS (FD) m/e 291 (M+) ;

UV (EtOH) 298nm (ε=17987), 257nm (ε=9939), 204nm (ε=20802). Anal. Calcd for C14H17N3S2:

Theory: C, 57.70; H, 5.80; N, 14.42.

Found: C, 57.41; H, 5.85; N, 14.39.

Exa ple 3 N- \2 -(4-Methvi)-1-phenethyll-N ¹ - (2-thiazolyl) thiourea

A solution of 2-(4-methylphenethyl) isothiocyanate (820 mg, 4.6 mmol) and 2-aminothiazole (565 mg, 5.65 mmol) in N,N-dimethylformamide (15 mL) was heated

to 100°C. After 20.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , saturated sodium bicarbonate solution, and brine. The organic layer was dried over magnesium sulfate, filtered and concentrated. The solid obtained (1.1 g) was purified by flash chromatography on silica gel (1% ethyl acetate in methylene chloride) to provide 570 mg (45%) of the titled compound. A sample was recrystallized from ethyl acetate: p 132-3°C;

IR (KBr, cm- ) 3168, 2990, 1560, 1513, 1166, 808, 705; ^X H NMR (300 MHz, DMSO-d6) δ 11.62 (br s, IH) , 9.69 (br s,

IH), 7.36 (d, J=4 Hz, IH), 7.20-7.06 ( , 5H) , 3.83-3.73 (m, 2H), 2.87 (t, J=7 Hz, 2H), 2.30 (s, 3H) ; MS (FD) m/e 277 (M+) ;

UV (EtOH) 288nm (ε=18773), 257nm (ε=11948) , 212nm

(e=14509) .

Anal. Calcd for C13H15N3S2:

Theory: C, 56.29; H, 5.45; N, 15.15. Found: C, 56.55; H, 5.52; N, 15.04.

Example 4 N-f2-ohenethvl)-N*-(2-ovridvl) thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-aminopyridine (1.90 g, 20 mmol) o in N,N-dimethylformamide (50 mL) was heated to 100 C. After 4 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with water (3x) . The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting white solid was recrystallized from ethyl acetate to provide 1.86 g (36%) of the titled product: mp 153-154°C;

IR (KBr, cm-1) 3232, 1536, 1477, 1319, 775; ^■ T-H NMR (300 MHz, CDCI3) δ 11.72 (br s, IH) , 8.59 (br s,

IH) , 7.97 (d, J=4.2 Hz, IH) , 7.64(dt, J=1.7,8.2 Hz, IH) , 7.37-7.26 (m, 5H) , 6.92 (dd, J=7.2,5.1 Hz, IH) , 6.74 (d, J=8.2 Hz, IH) , 4.06 (m, J=6.8 Hz, 2H) , 3.04 (t, J=6.9 Hz, 2H);

MS (FD) m/e 257 (M+) ;

UV (EtOH) 293nm (ε=12040), 266nm (ε=12961) , 247nm (ε=11912) 202nm (ε=12963) .

Anal. Calcd for C14H15N3S:

Theory: C, 65.35; H, 5.87; N, 16.33. Found: C, 65.46; H, 5.82; N, 16.24

Exa ple 5

N- ( 2-nhenet vl ) -N< - (4-pvridvl ) thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 4-aminopyridine (1.92 g, 20 mmol) in 27,iV-dimethylformamide (50 mL) was heated to 100°C. After 4.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The oil obtained was purified by flash chromatography on silica gel (5% methanol in ethyl acetate to 10% methanol in ethyl acetate) . This material was recrystallized from ethyl acetate yielding 1.85g (36%) of the title product: p 154.5°C;

IR (KBr, cm ^"1 ) 3142, 1579, 1518, 1328, 1276, 750; NMR .(300 MHz, CDCI3) δ 8.42 (dd, J=l,5 Hz, 2H) , 7.94 (br s, IH), 7.39-7.23 (m, 5H) , 6.81 (d, J=5 Hz, 2H) , 6.38 (br s, IH) , 3.99 (m, J=6 Hz, 2H) , 3.02 (t, J=6 Hz, 2H) : MS (FD) m/e 258 (M+l) ; UV (EtOH) 281nm (ε=16486) , 255nm (ε=21182), 208nm (ε=25744) .

Anal. Calcd for C14H15N3S: Theory: C, 65.34; H, 5.87; N, 16.33.

Found: C, 65.43; H, 5.97; N, 16.17.

Exfl l 6

N-(2-phenethvl)-N'-r2-(6-fluoro)-benzothiazolyll thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0mL) and 2-amino-6-fluoro-benzothiazole (3.36 g, 20 mmol) in dimethylsulfoxide (10 mL) was heated to 150 C. After 5 h, the reaction was cooled to room temperature and filtered. The filtrate was poured into ethyl acetate, washed with water (5x) and brine (2x) . The organic layer was concentrated and recrystallized from ethyl acetate to provide 729.5 mg (11%) of the titled product: mp 212-213°C;

IR (KBr, cm ^"1 ) 3175, 3025, 1561, 1534, 1461, 1249, 1215;

!H NMR (300 MHz, CDCI3) δ 11.81 (br s, IH) , 9.83 (br s,

IH) , 7.77 (dd, J=8.7, 2.4 Hz, IH) , 7.52 (br s, IH) , 7.31- 7.15 (m, 6H) , 3.79 (m, 2H) , 2.90 (t, J=6.6 Hz, 2H) ; MS (FD) m/e 331 (M ⁺ ) ; UV (EtOH) 310nm, 289nm, 245nm, 208nm, 201nm.

Anal. Calcd for C16H14N3S2F:

Theory: C, 57.98; H, 4.26; N, 12.68. Found: C, 57.74; H, 4.39; N, 12.53.

Example 7 N-(2-phenethyl)-N'-T2-(4-phenvl-5-tetradecvl)-thiazolvll thipurea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3 mL) and 2-amino-4-phenyl-5-tetradecylthiazole (7.45 g, 20 mmol) in JV,iV-dimethylfθ-rmamide (50 mL) was heated to 100°C. After 24 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The material was recrystallized from ethyl acetate (once) and hexanes (once) to provide 4.93 g (46%) of the title product: mp 108.5-109°C;

IR (KBr, cm-1) 3166, 3022, 2915, 1850, 1574, 1523, 1502,

1215, 695; iH NMR (300 MHz, CDCI3) δ 10.87 (br s, IH) , 9.28 (br s,

IH), 7.55-7.16 (m, 10H) , 4.00-3.95 ( , 2H) , 2.99 (t, J=7 Hz, 2H) , 2.79 (t, J=9Hz, 2H) , 1.65-1.00 (m, 24H) , 0.86 (t, J=6 Hz, 3H) ; MS (FD) m/e 535 (M ⁺ ) ; UV (EtOH) 299nm (ε=19199), 261nm (ε=17809), 203nm (ε=31542)

Anal. Calcd for C32H45N3S2: Theory: C, 71.73; H, 8.46; N, 7.84.

Found: C, 71.93; H, 8.75; N, 7.92.

Example 8

N- 17- (3 r -<flimetI_gχγ) -phenethYll -N ' - (2-thiagplγl) thipurea

A solution of 2-(3,4-dimethoxyphenethyl) isothio-cyanate (0.52 g, 2.33 mmol) and 2-aminothiazole (233 mg, 2.33 mmol) in N,iy-dimethylformamide (10 mL) was heated to 100 C. After 24 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic, solution was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and

brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The oil was recrystallized from toluene to provide 129mg (17%) of the title product: mp 139°C; IR (KBr ^* , cm" ¹ ) 3168, 3112, 3013, 1572, 1550, 1516, 1461,

1263, 1237, 1183;

^X H NMR (300 MHz, DMSO-d6) δ 11.55 (br s, IH) , 9.80-9.62 (br s, IH), 7.35 (m, IH), 7.15 (br s, IH) , 6.90-6.75 ( , 3H) , 3.80-3.70 (m, 2H) , 3.72 (s, 6H) , 2.84 (t, J=6 Hz, 2H) ; MS (FD) m/e 323 (M+) ;

UV (EtOH) 287nm (ε=21678) , 258nm (ε=11828), 228nm (ε=11401) , 205nm (ε=36669).

Anal. Calcd for C14H17N3O2S2:

Theory: C, 51.99; H, 5.30; N, 12.99. Found: C, 51.96; H, 5.51; N, 13.02.

Example 9 N-(2-Phenethvl.-N'-.2-.4-( -bromoohenvl) ) hiazolvll thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3 mL) and 2-amino-4-( -bromopheny1)thiazole (5.15 g, 20 mmol) in iV,.A.-dimethylformamide (50 mL) was heated to 100 C. After 65 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer contained as solid which was filtered. The filtrate was dried over sodium sulfate, filtered and concentrated and added to the filtered solid. The combined material was recrystallized from ethyl acetate to provide 12.04 g (24%) of the title product: mp 215.5-216.5°C; IR (KBr, cm ^"1 ) 3166, 3022, 1574, 1523, 1502, 737, 695;

H NMR (300 MHz, DMSO-d6) δ 11.70 (br s, IH) , 9.40 (br s,

IH), 7.74-7.54 (m, 5H) , 7.36-7.18 (m, 5H) , 3.90-3.81 ( ,

2H) , 2.96 (t, J=6 Hz, 2H) ;

MS (FD) m/e 419 (M+l) ;

UV (EtOH) 287nm (ε=28740) , 268nm (ε=24574) , 246nm (ε=18009. ,

203nm (ε=35813).

Anal. Calcd for CιsHi6N3S2Br:

Theory: C, 51.68; H, 3.86; N, 10.04. Found: C, 51.39; H, 3.77; N, 9.77.

Example 10 N- \2-(4-πhloro)-phenethvll-N ¹ -(2-thiazolvl) thiourea

A solution of 2-(4-chloro)-phenethyl isothiocyanate (657 mg, 3.3 mmol) and 2-aminothiazole (335 mg, 3.3 mmol) in _y,2>7-dimethylformamide (10 mL) was heated to 100 C. After 20.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, and water (3x) . The organic layer was dried over sodium sulfate, filtered and

concentrated. The material was recrystallized from ethyl acetate (2x) to provide 136 mg (14%) of title product: mp 154-155°C;

IR (KBr, cm- ¹ ) 3090, 2991, 1561, 1515, 1490, 1176;

^•" -H NMR .(300 MHz, DMSO-dg) δ 11.58 (br ε, IH) , 9.78-9.60 (br s, IH) , 7.40-7.28 (m, 5H) , 7.12 (br s, IH) , 3.81-3.72 (m,

2H) , 2.92 (t, J=6 Hz, 2H) ;

MS (FD) m/e 297 (M+) ;

UV (EtOH) 289nm (ε=19572) , 257nm (8=12071), 220nm (ε=15393),

202nm (ε=22079) .

Anal. Calcd for C12H 2N3S2CI:

Theory: C, 48.40; H, 4.06; N, 14.11.

Found: C, 48.17; H, 4.02; N,13.83.

Example 11

N-(2-Phenethvl)-N ¹ - \2-(4.5-dihvdro)thiazolvll thiourea

A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-4,5-dihydrothiazole (1.02 g, 10 mmol) in dimethylsulfoxide (10 mL) was heated to 100 C. After 2.5 h, the reaction was cooled to room

temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water

(4x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was recrystallized from ethyl acetate to provide 1.48 g (56%) of title product as a white crystalline solid. A sample was recrystallized a second time from ethyl acetate: mp 132-134°C; IR (KBr, cm ^-1 ) 3161, 3027, 2945, 2862, 1630, 1574, 1552, 1221, 1033; iH NMR (300 MHZ, CDCI3) δ 11.11 (br S, IH) , 8.36 (s, IH) ,

7.32-7.14 (m, 5H) , 4.05-3.97 (m, 2H) , 3.90-3.83 (m, 2H) , 3.30-3.22 (m, 2H) , 2.94 (t, J=7.1 Hz, 2H) ; MS (El) m/e 265 (M+) ; UV (EtOH) 269nm (ε=18349) , 206nm (ε=18745) .

Anal. Calcd for C12H15N3S2:

Theory: C, 54.31; H, 5.70; N, 15.83. Found: C, 54.36; H, 5.66; N, 15.78.

Example 12

N-(2-Phenethyl)-N'-T2-(4-methylthiazolyl) 1 thiourea

A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) , 2-amino-4-methylthiazole hydrochloride (1.51 g, 10 mmol) and N,iV-diisopropylethylamine (1.29 g, 10 mmol, 1.74 mL) in dimethylsulfoxide (10 mL) was heated to 100 C. After 21 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) , followed by recrystallization from ethyl acetate to provide 1.05 g (38%) of the title product as a very light green crystalline solid: mp 190-192°C;

IR (KBr, cm ^"1 ) 3456, 3169, 3084, 3024, 1565, 1533, 1506,

1214; iH NMR (300 MHZ, CDCI3) δ 10.92 (s, IH) , 10.08 (s, IH) ,

7.33-7.20 (m, 5H) , 6.31 (s, IH) . 4.04-3.98 (m, 2H) , 3.01 (t, J=6.9 Hz, 2H) , 2.17 (s, 3H) ; MS (El) ^' m/e 277 (M+) ;

UV (EtOH) 293nm (ε=18119), 258nm (8=10137), 204nm (ε=18979) . Anal. Calcd. for C13H15N3S2:

Theory: C, 56.29; H, 5.45; N, 15.15. Found: C, 56.53; H, 5.53; N, 15.18.

Example 13 N-(2-Phenethyl)-N ¹ - 12-(4-(ethvlglvoxvlate)thiazolvl) T thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and ethyl 2-amino-4-thiazoleglyoxylate (4.0 g, 20 mmol) in dimethylsulfoxide (20 mL) was heated to 110 C. After 68 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (5x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (10% ethyl acetate in dichloromethane) and treated with decolorizing carbon to provide 2.37 g (33%) of the title product as a light yellow solid. -A sample was recrystallized from ethyl acetate: mp 168-169°C; IR (KBr, cm- ¹ ) 3174, 3029, 1724, 1685, 1558, 1530, 1215, 1133, 1054;

^"■ -H NMR (300 MHZ, CDCI3) δ 10.67 (s, IH) , 8.21 (s, IH) , 7.34-7.17 (m, 5H) , 4.39 (q, J=7.1 Hz, 2H) , 3.96-3.85 (m, 2H), 3.09-2.93 (m, 2H) , 1.40 (t, J=7.l Hz, 3H) ; MS (FD) m/e 363 (M+); UV (EtOH) 284nm (ε=18549), 255nm (6=17141), 204nm (ε=23447)

Anal. Calcd for C16H17N3O3S2:

Theory: C, 52.87; H, 4.71; N, 11.56. Found: C, 53.08; H, 4.80; N, 11.55.

Example 14

N-(2-Phenethvl)-N'-.2-(5.6-dimethvlbenzothiazolvl) 1 thig rea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-5,6-dimethylbenzothiazole (3.57 g, 20 mmol) in N,i\7-dimethyl-formamide (50 mL) was heated to 100 C. After 24 h, the reaction was cooled to room temperature and poured into ethyl acetate, with formation of a precipitate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (2x) and brine. The organic layer was filtered and the solid obtained (3.0 g) triturated with 20% ethanol in ethyl acetate to provide 2.91 g (43%) of the title product as a pale yellow solid: mp 226-'228°C;

IR (KBr, cm" ¹ ) 3178, 3047, 1557, 1530, 1462, 1254, 1220; NMR (300 MHZ, DMSO-do") δ 11.69 (s, IH) , 10.30 (s, IH) ,

7.55 (s, IH), 7.35-7.16 ( , 6H) , 3.80-3.73 (m, 2H) , 2.90 (t, J=7.0 Hz, 2H), 2.25 (s, 3H) , 2.23 (s, 3H) ; MS (El) m/e 341 (M+) ; UV (EtOH) 307nm, 253nm, 204nm.

Anal. Calcd for CI8H19N3S2:

Theory: C, 63.31; H, 5.61; N, 12.31.

Found: C, 63.15; H, 5.63; N, 12.14.

Example 15 N- (2-Phenethvl) -N'-1 ^* 2-f6-methoxvbenzothiazolvl) 1 thiourea

I ASsolJution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-6-methoxybenzothiazole (3.60 g, 20 mmol) in (50 mL) was heated to 100 C. After 16 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was filtered to provide 550 mg of the title product. The filtrate was concentrated and the

resulting solid recrystallized from ethyl acetate to provide, another 830 mg of the title product. Total yield: 1.38 g (20%) of the title product as a fluffy white solid: p 217-218°C; IR (KBr, cm" ¹ ) 3182, 3050, 1556, 1534, 1473, 1437, 1221, 1055; ^• J-H NMR (300 MHZ, CDCI3) 810.99 (s, IH) , 9.29 (s, IH) ,

7.46-6.99 (m, 8H) , 4.12-4.06 ( , 2H) , 3.86 (s, 3H) , 3.08

(t, J=6.8 Hz, 2H); MS (FD) m/e 343 (M+) ;

UV (EtOH) 312nm (ε=22725) , 251nm (ε=11152), 204nm (ε=26183)

Anal. Calcd for C17H17N3OS2:

Theory: C, 59.45; H, 4.99; N, 12.23.

Found: C, 59.21; H, 4.97; N, 12.19.

Example 16

Ethyl l,2-dihydro-2-ethoxy-l- quinolinecarboxylate (6.68 g, 27.0 mmol) was added to a solution of ethyl [2-(tritylamino)thiazol-4-yl]-(Z)- hydroxyiminoacetate (11.46 g, 26.7 mmol) in N, N-dimethy1- formamide (100 mL) and stirred for 6 h at room temperature. The reaction was poured into ethyl acetate, washed with IN hydrochloric acid (2x) , water (3x) and brine, dried over sodium sulfate, filtered and concentrated. The resulting white foam (9.9 g) was dissolved in dichloromethane (300

mL), treated with triethylsilane (12.44 g, 107 mmol, 17 mL) and trifluoroacetic acid (25 mL) and stirred for 2.5 h at room temperature. The reaction was concentrated in vacuo, dissolved in ethyl acetate, washed with saturated sodium bicarbonate solution and brine, dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1:1 ethyl acetate and hexanes) to provide 2.75 g (82%) of the title product as a white solid: p 154-156°C;

IR (KBr, cnT ¹ ) 3416, 3291, 3118, 2234, 1638, 1547, 1315,

1108; NMR (300 MHZ, CDCI3) δ 7.23 (s, IH) , 5.19 (br s, 2H) ;

MS (FD) m/e 125 (M+) ; UV (EtOH) 278nm (e=4359), 235nm (e=4047), 210nm (e=16728) . Anal. Calcd for C4H3N3S:

Theory: C, 38.39; H, 2.42; N, 33.57. Found: C, 38.65; H, 2.46; N, 33.24.

Example 1

N-(3-Phenvlpropvl)- ¹ -(2-thiazolvl) thiourea

A solution of 3-phenylpropyl isothiocyanate (500 mg, 2.82 mmol) and 2-aminothiazole (300 mg, 3.0 mmol) in N,N-dimethylformamide (10 mL) was heated to 100 C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (3x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from ethyl acetate to provide 129 mg of the title product. A second crop was recrystallized from 1:1 ethyl acetate/hexanes to provide another 110 mg of the title product. Total yield of the title product: 239 mg (30%) as an off-white solid. A sample was recrystallized again from ethyl acetate: mp 126.5-127.5°C;

IR (KBr, cm" ¹ ) 3166, 3022, 1574, 1523, 1502, 1215, 1166; ^•" -H NMR (300 MHZ, CDCI3) δ 10.88 (s, IH) , 10.42 (s, IH) ,

7.37-7.15 (m, 6H) , 6.82 (d, J=3.6 Hz, IH) , 3.82-3.71 (m, 2H) , 2.74 (t, J=7.7 Hz, 2H) , 2.12-2.01 (m, 2H) ; MS (FD) m/e 277 (M+) ;

UV (EtOH) 288nm (e=19598), 256nm (e=11329), 206nm (e=19259) .

Anal. Calcd for C13H15N3S2: Theory: C, 56.29; H, 5.45; N, 15.15.

Found: C, 56.29; H, 5.38; N, 15.00.

Example 18 N- (2-Phenethyl)-N'- Ϊ2- (6-ethoxyben o hiazolvl) 1 thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-6-ethoxy-benzothiazole (3.88 g, 20 mmol) in -V,.N ^" -dimethylformamide (50 mL) was heated to 100 C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was recrystallized from ethyl acetate to provide 649 mg (9%) of the title product as a tan solid: mp 204-205°C;

IR (KBr, cm ^-1 ) 3166, 3022, 1574, 1523, 1502, 1435, 1215; - ^" -H NMR (300 MHZ, CDCI3) δ 11.01 (s, IH), 9.77 (s, IH) ,

7.43-6.95 (m, 8H) , 4.08-4.01 (m, 4H) , 3.06 (t, J=6.6 Hz, 2H) , 1.43 (t, J=6.8 Hz, 3H) ; S (FD) m/e 357 (M+) ;

UV (EtOH) 312nm (e=23035), 251nm (e=11355), 204nm (e=26891) .

Anal. Calcd for C18H19N3OS2:

Theory: C, 60.48; H, 5.36; N, 11.75.

Found: C, 60.21; H, 5.10; N, 11.52.

Example 19 N- (2-Phenethyl)-N'- . 2 -( -tert-butvlthiazolvl) 1 thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-ter -butylthiazole (3.13 g, 20 mmol) in N,N-dimethylformamide (50 mL) was heated to 100 C. After 64 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was recrystallized from ethyl acetate to provide 2.98 g (47%) of the title product as an off-white crystalline solid: mp 173.5-175°C;

IR (KBr, cm" ¹ ) 3173, 2960, 1576, 1514, 1465, 1348, 1204,

1098; NMR (300 MHZ, CDCI3) δ 11.14 (s, IH) , 10.26 (s, IH) ,

7.31-7.18 (m, 5H) , 6.33 (s, IH) , 4.05-3.99 (m, 2H) , 3.04 (t, J=7.1 Hz, 2H) , 1.14 (s, 9H) ; MS (FD) m/e 319 (M+) ;

UV (EtOH) 292nm (e=20804) , 257nm (e=10502), 203nm (e=19085) .

Anal. Calcd for C16H21N3S2 Theory: C, 60.15; H, 6.63; N, 13.15.

Found: C, 59.95; H, 6.66; N, 13.15.

Example 20 N-(2-Phenethvl)-N'-r2-(4-trifluoromethylthiazolvl) 1 thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-trifluoromethylthiazole (3.84 g, 22.8 mmol) in ^iV-dimethyl-formamide (50 mL) was heated to 100 C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (3x) and

brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was recrystallized from 1:1 ethyl acetate/hexanes to provide

* f 846 mg (13%) of the title product as a white solid: 5 p 162- ^' l63°C;

IR (KBr, cm" ¹ ) 3166, 3033, 1562, 1516, 1469, 1242, 1126; - ^" -H NMR (300 MHZ, CDCI3) δ 10.49 (s, IH) , 10.31 (s, IH) ,

7.33-7.19 (m, 6H) , 4.01-3.95 (m, 2H) , 3.02 (t, J=6.9 Hz, ^" 2H); 10 MS (FD) m/e 331 (M+) ;

UV (EtOH) 286nm (e=14352), 258nm (e=14149), 205nm (e=24571) .

Anal. Calcd for C13H12F3N3S2:

Theory: C, 47.12; H, 3.65; N, 12.68. 15 Found: C, 47.34; H, 3.85; N, 12.72.

Example 21 N-(2-Phenethyl?-N' ,N'-dimethyl thipurea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-5-chlorothiazole (2.69 g,

20 mmol) in -Y,2v7-dimethylformamide (50 mL) was heated to 100 C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid and brine (3x) . The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized twice from ethyl acetate to provide 606 mg (14%) of the title product as an off-white crystalline solid: mp 104.5-105.5°C;

IR (KBr, cm- ¹ ) 3284, 1536, 1452, 1347, 901; ^" •-H NMR (300 MHZ, CDCI3) δ 7.33-7.19 (m, 5H) , 5.37 (br s,

IH), 3.93-3.87 (m, 2H) , 3.16 (s, 6H) , 2.93 (t, J=6,8 Hz, 2H) ,-

MS (FD) m/e 208 (M+) ;

UV (EtOH) 242nm (ε=12899) , 210nm (ε=21286) .

Anal. Calcd for C11H16N2S:

Theory: C, 63.42; H, 7.74; N, 13.45. Found: C, 63.39; H, 7.80; N, 13.67.

Example 22

N-(2-Phenvethvl)-N'-r2-(4-cvanothiazolvl) thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-cyanothiazole (2.50 g, 20 mmol) in iV,.N-dimethylformamide (50 mL) was heated to 100 C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with saturated sodium bicarbonate solution, water (3x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 132 mg of the title product (2%) as a white solid: mp 169-170°C;

IR (KBr, cm' ¹ ) 3166, 3022, 1574, 1523, 1502, 1215, 1166; - ^" -H NMR (300 MHZ, CDCI3) δ 10.88 (s, IH) , 10.09 (s, IH) ,

7.50 (s, IH), 7.39-7.23 (m, 5H) , 4.00-3.93 (m, 2H) , 3.02 (t, J=6.9 Hz, 2H) ; MS (FD) m/e 288 (M+) ; UV (EtOH) 288nm (ε=11104), 258nm (ε=17433), 208nm (ε=31355) .

Anal. Calcd for C13H12N4S2:

Theory: C, 54.14; H, 4.19; N, 19.43. Found: C, 54.04; H, 4.23; N, 19.73.

Example 23 N-(2-Phenethvl)- •-2-T -(4-pvridvl)-thiazolvl1 thiourea

2-Amino-4-(4-pyridyl)thiazole hydrobromide ¹ _' ² was slurried with methylene chloride and shaken with saturated sodium bicarbonate solution. The layers were separated and the aqueous washed with methylene chloride and ethyl acetate. The combined organic layers were concentrated. To the solid (1.0 g, 5.6 mmol) was added 2- phenethyl isothiocyanate (0.91 g, 5.6 mmol, 0.83mL) in N,N- dimethylformamide (12.5 mL) . The resulting suspension was heated to 100°C. After 20.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was recrystallized from

ethyl acetate (3x) to provide 133 mg (7%) of the title * _* product: mp 196.5°C;

- r IR (KBr, cm" ¹ ) 3250, 2939, 1723, 1604, 1506, 1223, 670,

5 664;

¹ H NMR (300 MHz, DMSO-d ₆ ) δ 11.72 (s, IH) , 9.21 (br s, IH) ,

8.54 (d, J=6 Hz, 2H) , 7.82 (s, IH) , 7.63 (d, J=6 Hz, 2H) ,

7.30-7.15 (m, 5H) , 3.84-3.77 (m, 2H) , 2.89 (t, J=7 Hz, 2H) ;

MS (FD) m/e 340 (M+) ;

10 HRMS (FAB) m/e (M+) calcd 341.0895, obs 341.0909;

UV (EtOH) 294nm (ε=23935) , 231nm (ε=16356) , 203nm (ε=25793).

(1) Nielsen, A.T. and Platt, E.N. Heterocyclic Chem. , 1969, vol 6 p 896. 15 (2) Brown, Cowden, Grigg, Kavulak Aust . J. Chem. 1980, 33, 2291.

Examole 24 N-(2-phenethyl)-N'- 12-(4-(4-biphenvl)-thiazolvll thiourea

A solution of 2-phenethyl isothiocyanate (0.82 g, 5 mmol, 0.75 mL) and 2-amino-4-(4-biphenyl)thiazole (1.26 g, 5 mmol) in JV,iV-dimethylformamide (12.5 mL) was heated to 100°C. After 19.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with IN hydrochloric acid. The mixture was filtered and the filtrate was separated and the organic phase washed with saturated sodium bicarbonate solution, water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The material was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane to 2% ethyl acetate in dichloromethane) to provide 372 mg of the title product (18%) . . The yellow solid was recrystallized from ethyl acetate: mp 208.5-209°C;

IR (KBr, cm" ¹ ) 3437, 3172, 3029, 1570, 1553, 1511, 1211, 1060, 738;

^■"■ H NMR (300 MHz, DMSO-d ₆ ) d 11.72 (s, IH) , 9.54 (br S, IH) , 7.86-7.80 (m, 2H) , 7.78-7.68 (m, 4H) , 7.58 (s, IH) , 7,52- 7.44 ( , 2H), 7.41-7.35 (m, IH) , 7.34-7.29 (m, 4H) , 7.27- 7.20 (m, IH) , 3.92-3.84 (m, 2H) , 2.98 (t, J=3 Hz, 2H) ; MS (FD) m/e 415 (M+) ; UV (EtOH) 293nm, 212nm.

Anal. Calcd for C24H21N3S2:

Theory: C, 69.36; H, 5.09; N, 10.11.

Found: C, 69.08; H, 5.10; N, 9.99.

Example 25

N-(2-Phenethyl)-N'-2-r4-(l-(l-ethvoxycarbonlyl)-(3-_:- butoxvcarbonvlmethoxv)imino)-thiazolvl1 thiourea

2-Amino-4-(1-(1-ethoxycarbonyl)-(3-t-butoxy- Ccirbonylmethoxy)imino)thiazole (2.64 g, 8 mmol) and 2- phenethyl isothiocyanate (1.31 g, 8 mmol, 1.2 mL) in N,N- dimethylformamide (20 mL) were heated to 100°C. After 24 h, the. reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x> and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was triturated with ethyl acetate to provide 801 mg (20%) of the title product: p 188.5°C;

IR (KBr, cm" ¹ ) 3293, 2975, 1749, 1594, 1543, 1453, 1382, 1231, 1154, 1054, 748, 698; - ^" -H NMR (300 MHz, DMSO-dg) d 11.85 (s, IH) , 8.46 (br S,1H),

7.29-7.17 ( , 5H) , 4.59 (s, 2H) , 4.31-4.24 (q, J=7.1 Hz, 2H) , 3.70-3.64 (m, 2H) , 2.82 (t, J=7.1 Hz, 2H) , 1.36 (s, 9H), 1.23 (t, J= 7.1 Hz, 3H); MS (FD) m/e 492 (M ⁺ ) ; UV (EtOH) 292nm, 257nm (6=16356), 203nm.

Anal. Calcd for C ₂₂ H ₂ 8 ₄ O ₅ S ₂ :

Theory: C, 53.64; H, 5.73; N, 11.37. Found: C, 53.67; H, 5.83; N, 11.34.

Example 26

N-f2-Phenethvl)-N ¹ -2-r4-t-butvl-5-methvlthiazolvl1 thiourea

^{H H N} .

2-Amino-4-t-butyl-5-methylthiazole (1.87 g, 11 mmol) and 2-phenethyl isothiocyanate (1.80 g, 11 mmol, 1.64 mL) in 2V,N-dimethylformamide (25 mL) were heated to 100°C. After 18.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was triturated with ether to provide 1.02 g (28%) of the title product: mp 153-153.5°C;

IR (KBr, cm" ¹ ) 3171, 2966, 1474, 1534, 1510, 1455, 1346, 1221, 1186, 755, 704; ⁱ H NMR (300 MHz, DMSO-dβ) δ 11.28 (BR S, IH) , 9.90 (BR S,

IH), 7.28-7.14 (M, 5H) , 3.78-3.34 (M, 2H) , 2.84 (T, J=7 Hz,

2H) , 2.27 (s, 3H) , 1.16 (s, 9H) ;

MS (FD) m/e 333 (M ⁺ ) ;

UV (EtOH) 297nm (ε=19835), 257nm (6=9954), 202nm (ε=21059) . Anal. Calcd for C ₁ 7H ₂₃ N ₃ S ₂ :

Theory: C, 61.22; H, 6.95; N, 12.60. Found: C, 61.42; H, 6.92; N, 12.55.

Example 27 N-(2-Phenethvl)-N ¹ -r5-methvl-,2-(1.3.4-thiadiazolyl) 11 thiourea A solution of 2-amino-5-methyl 1,3,4-thiadiazole (2.30 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol ^' , 3.0 mL) in N,N-dimethylformamide (50 mL) was heated to 100°C for 18 h. The reaction was cooled to room temperature and the solvent was removed in vacuo. The

resultant solid was crystallized from ethyl acetate to provide 1.86 g (33%) of the title product as a white solid:

IR (KBr, cm ^-1 ) 3323, 3031, 1640, 1540, 1444, 1385, 781,

697, 652; NMR (300 MHz, DMSO-dg) δ 12.4 (br s, IH) , 8.75 (br s,

IH), 7.4-7.2 (m, 5H) , 3.85-3.75 ( , 2H) , 2.9 (t, J=7 Hz,

2H), 2.54 (s, 3H);

MS (FD> m/e 278 (M+) ;

UV (EtOH) 280nm (6=10188), 253nm (6=11849), 205nm (6=19724).

Example 28 N- (2-Phene hvl )-N'-f2-pvrimidinvl) thiourea A solution of 2-aminopyrimidine (1.90 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in N,N~dimethylformamide (50 mL) was heated to 120°C for 40 h. The reaction was cooled to room temperature and the solvent was removed in vacuo. The resultant solid was recrystallized twice from ethyl acetate to provide 0.90 g (17%) of the title product as white needles: IR (KBr, cm ^-1 ) 3325, 1588, 1524, 1434, 1415, 1333, 1228, 1154, 797; !H NMR (300 MHz, DMSO-dg) δ 11.25 (br s, IH) , 10.65 (br s,

IH), 8.6 (d, J=5 HZ, 2H) 7.4-7.2 (m, 6H) , 3.85-3.75 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 258 (M+) ;

UV (EtOH) 286nm (ε=17644) , 267nm (ε=15834) , 244πm (ε=12312), 205nm (8=21839} .

Anal. Calcd for C13H14N4S:

Theory: C, 60.44; H, 5.46; N, 21.69. Found: C, 60.15; H, 5.48; N, 21.89.

Example 29

N-(2-Phenethyl)-N'-T2- .4-(4-chlorophenyl)thiazolvl) 1 thiourea A solution of 2-phenethyl isothiocyanate (0.77 g, 4.75 mmol) and 2-amino-4- (4-chlorophenyl)thiazole (1.0 g, 4.75 mmol) in N,N-dimethylformamide (10 mL) was heated o to 120 C 20 h. The solvent was removed in vacuo. The resultant solid was recrystallized from ethyl acetate to provide 0.30 g (17%) of the title product as a yellow solid:

IR (KBr, cm ^-1 ) 3176, 3029, 1579, 1515, 1231, 737, 698; ^•• -H NMR (300 MHz, DMSO-dδ) δ 11.70 (br s, IH) , 9.40 (br s,

IH), 7.74-7.54 (m, 5H) , 7.36-7.18 (m, 5H) , 3.9-3.8 (m, 2H) , 2.96 (t, J=6 Hz, 2H) ; MS (FD) m/e 373 (M ⁺ ) ;

UV (EtOH) 273nm (6=35089), 247nm (6=21894), 202nm (6=22213).

Anal. Calcd for C18H16N3S2CI:

Theory: C, 57.82; H, 4.31; N, 11.24. Found: C, 57.55; H, 4.24; N, 11.26.

Example 3Q N-(2-phenethyl?-N'- \2-(6-chlprp)frenzpthiasplyl1 thipurea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol) and 2-amino-6-chlorobenzothiazole (3.69 g, 20 mmol) in (50 mL) was heated to 120°C for 24 h. The solvent was removed in vacuo. The resultant solid was recrystallized from ethyl acetate to provide 3.68 g (53%) of the title product as a white solid: IR (KBr, cm ^-1 ) 3165, 3021, 1574, 1522, 1501, 1289, 1215; -J-H NMR (300 MHz, CDCI3) δ 12.0 (br s, IH) , 9.8 (br s, IH) ,

8.1-7.2 (m, 8H) , 3.85 ( , 2H) , 2.95 (t, J=7 Hz, 2H) ;

MS (FD) m/e 347 (M ⁺ ) ;

UV (EtOH) 304nm, 292nm, 248nm, 220nm, 205nm.

Example 31 N-(2-Phenethvl)-N'-F5-ethvl-F2-(1.3.4-thiadiazolyl) 11 thiourea A solution of 2-amino-5-ethyl-l,3,4-thiadiazole (2.58 g, 20 mmol) .and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in Jtf, -dimethylformamide (50 mL) was heated to 120°C for 8 h. The reaction was cooled to room temperature and the solvent was removed in vacuo. The resultant solid was crystallized from ethyl acetate to provide 2.45 g (33%) of the title product as a white solid: IR (KBr, cm ^-1 ) 3317, 1645, 1536, 1448, 1384, 783, 693, 651; NMR (300 MHz, DMSO-d6) δ 12.4 (br s, IH) , 8.75 (br s,

IH), 7.4-7.2 (m, 5H) , 3.85-3.75 ( , 2H) , 3.0-2.8 (m, 4H) ,

1.25 (t, J=7 Hz, 3H) ;

MS (FD) m/e 292 (M+);

UV (EtOH) 281nm (6=13028), 253nm (6=13615), 206nm (ε=23674) .

Example 32 N-(2-Phenethvl)-N--. -chlorophenyl1 thiourea

A solution of 4-chloroaniline (2.55 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in if,iY-dimethylformamide (50 mL) was heated to 120°C for 18 h. The reaction was cooled to room temperature and the solvent was removed in vacuo. The resultant solid was crystallized from ethyl acetate to provide 1.50 g (26%) of the title product, as a yellow solid:

IR (KBr, cm ^-1 ) 3166, 3021, 1523, 1501, 1289, 1079, 802,

737, 695; NMR (300 MHz, DMSO-d6) δ 9.6 (br s, IH) , 7.9 (br s, IH) ,

7.5-7.2- (m, 9H), 3.8-3.65 (m, 2H) , 3.0-2.8 (t, J=7 Hz, 2H) ;

MS (FD) m/e 290 (M+) ;

UV (EtOH) 270nm (ε=14107), 247nm (8=18128), 206nm (8=27795).

Anal. Calcd for C15H15N2SCI:

Theory: C, 61.95; H, 5.20; N, 9.63.

Found: C, 62.19; H, 5.46; N, 9.87.

Example 33

N-(2-Phenethvl)-N'-r3-chlorophenvl1 thiourea

A solution of 3-chloroaniline (2.55 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in _V,W-dimethylformamide (50 mL) was heated to 120°C for 20 h. The reaction was cooled to room temperature and the solvent was removed in vacuo. The resultant yellow oil was purified by HPLC on silica gel to provide 0.95 g (16%) of the title product as a white solid: IR (KBr, cm" ¹ ) 3310, 1591, 1542, 1495; NMR (300 MHz, DMSO-d6) δ 9.85 (br s, IH) , 7.9 (br s,

IH), 7.65-7.2 (m, 9H) , 3.8-3.65 (m, 2H) , 3.0-2.8 (t, J=7 Hz, 2H) ;

MS (FD) m/e 290 (M+) ; UV (EtOH) 250nm (8=17296), 209nm (8=29630).

Anal. Calcd for C15H15N2SCI:

Theory: C, 61.95; H, 5.20; N, 9.63. Found: C, 61.65; H, 5.44; N, 9.84.

Example 34 N-(n-Propvl)-N ¹ -r2-thiazovll thiourea A solution of 2-aminothiazole (2.0 g, 20 mmol) and n-propyl isothiocyanate (2.0 g, 20 mmol) in N,N- dimethylformamide (50 mL) was heated to 120°C for 20 h.

The reaction was cooled to room temperature and the solvent was removed in vacuo. The resultant yellow oil was recrystallized twice from ethyl acetate to provide 0.42 g (10%) o*f the title product as a white solid: IR (KBr, cnT ¹ ) 3179, 1556, 1514, 1471, 680;

-IH NMR (300 MHz, DMSO-d6) δ 11.55 (br s, IH) , 9.7 (br s,

IH), 7.4 (d, J=5 Hz, IH), 7.1 (d, J=5 Hz, IH) , 3.5 (m, 2H) , 1.6 (m, 2H), 0.95 (t, J=7 Hz, 3H) ; MS (FD) m/e 201 (M+) ; UV (EtOH) 288nm (6=19469), 256nm (6=10151), 202nm (6=11550).

Anal. Calcd for C7H11N3S2:

Theory: C, 41.77; H, 5.51; N, 20.87. Found: C, 42.02; H, 5.61; N, 20.93.

Example 35

N-(2-phenethvl)-N'-r2-(4.5.6.7-tetrahvdrobenzothiazolvl)1 thiourea A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol) and 2-amino-4,5,6,7-tetrahydrobenzothiazole (1.54 g, 10 mmol) in V,iW-dimethylformamide (25 mL) was heated to 120 C for 48 h. The solvent was removed in vacuo. The resultant solid was recrystallized from ethyl acetate to provide 0.32 g (11%) of the title product as a white solid: IR (KBr, cm ^-1 ) 3165, 3021, 2923, 1601, 1529, 1501, 1261, 1225;

NMR (300 MHz, DMSO-d6) δ 11.5 (br s, IH) , 10.0 (br s, IH) , 7.4-7.2 (m, 5H) , 3.85 ( , 2H) , 2.95 (t, J=7 Hz, 2H) , 2.6-2.4 (m, 4H), 1.75 (m, 4H) ; MS (FD) m/e 317 (M+) ; UV (EtOH) 299nm (6=11440), 258nm (ε=6011) , 207nm (6=10579).

Example 36

N-(2-phenethvl)-N'-.2-benzothiazolylI thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) .and 2-aminobenzothiazole (3.0 g, 20 mmol) in toluene (50 mL) was heated to reflux. After 5 h, the reaction was cooled to room temperature and poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.8 g (29%) of the title product: mp 203-207°C;

IR (KBr, cm" ¹ ) 3181, 3045, 1697, 1557, 1523, 1451, 1440, 1244, 749; 1H NMR (300 MHz, CDCl3/DMSO-d6) δ 11.7 (br s, IH) , 10.6 (br s, IH), 7.8-7.2 (m, 9H) , 3.95 (m, 2H) , 3.05 (t, J=7 Hz,

2H);

MS (FD) m/e 313 (M+) ;

UV (EtOH) 300nm (6=24241), 207 nm (6=28964). Anal. Calcd for C16H 5N3S2:

Theory: C, 61.31; H, 4.82; N, 13.41. Found: C, 61.03; H, 4.67; N, 13.19.

Exa ple 37 BT-f2-phenethvl)-N'- \2-(4-methvl)benzothiazolyl1 thiourea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-methylbenzothiazole (3.3 g, 20 mmol) in toluene (50 mL) was heated to reflux. After 5 h, the reaction was cooled to room temperature and poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.68 g (26%) of the title product: mp 185-188°C;

IR (KBr, cm- ¹ ) 3170, 3024, 1571, 1525, 1219, 767, 742, 698; ^•■ -H NMR (300 MHz, CDCl3/DMSO-d6) δ 11.4 (br s, IH) , 10.9 (br s, IH), 7.6-7.1 ( , 8H) , 4.05 (m, 2H) , 3.05 (t, J=7 Hz, 2H), 2.37 (s, 3H);

MS (FD) m/e 327 (M ⁺ ) ;

UV (EtOH) 303nm (6=27416), 204 nm (6=30294).

Anal. Calcd for C17H17N3S2:

Theory: C, 62.35; H, 5.23; N, 12.83. Found: C, 62.56; H, 5.37; N, 12.77.

Example 38 N-(2-phenethvl)-N'- Ϊ2-f4-methoxv)benzothiazolyl1 thiourea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-methoxybenzothiazole (3.2 g, 20 mmol) in 2f,jy-dimethylformamide (20 mL) was heated at 115 C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue

recrystallized from ethyl acetate to provide 0.97 g (14%) of the title, produc : mp 205-207°C;

IR (KBr, cm ^-1 ) 3165, 3021, 1574, 1522, 1215, 736, 695, 655; 1H NMR (300 MHz, DMSO-dδ) δ 12.4 (br s, IH) , 9.9 (br s,

IH) , 7.6-7.0 (m, 8H) , 3.9 (s, 3H) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H); MS (FD) m/e 343 (M+) ;

UV (EtOH) 293nm (6=20046), 248 nm (6=15731), 210 nm (6=38172).

Example 39 N-(2-phenethvl)-N ^, -r2-(4-chloro)benzothiazolyll thiourea

A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-chlorobenzothiazole (3.7 g, 20 mmol) in J7,2V-dimethylformamide (20 mL) was heated at 115°C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.56 g (37%) of the title product: mp 216-217°C;

IR (KBr, cm ^"1 ) 3166, 2940, 1568, 1527, 766, 733, 673; NMR (300 MHz, DMSO-d6) δ 12.2 (br s, IH) , 9.3 (br s,

IH), 7.6-7.0 (m, 8H) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H) ; MS (FD) m/e 347 (M+) ;

UV (EtOH) 301nm (6=20231), 249 nm (6=17615), 211 nm (8=31440) .

Exa ple 4Q

N-(2-Phenethvl)-N ¹ -T3-.1.2. -triazolvl) 1 thiourea

A solution of 3-ammo-l,2,4-triazole (1.70 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in tf,._-7-dimethylformamide (20 mL) was heated to 115°C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.99 g (20%) of the title product: mp 160-162°C;

IR (KBr., cm" ¹ ) 3160, 3061, 2872, 1581, 1535, 1467, 1167, 977, 743, 681; ¹ H NMR (300 MHz, DMSO-dβ) δ 13.9 (br s, IH) , 10.85 (br s,

IH), 10.0 (br s, IH) , 7.4-7.2 (m, 6H) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H) ; MS (FD) m/e 247 (M ⁺ ) ;

UV (EtOH) 261nm (8=21785), 229 nm (8=11918), 206 nm (8=17437) .

Anal. Calcd for C11H13N5S:

Theory: C, 53.42 H, 5.30; N, 28.32. Found: C, 53.69; H, 5.50; N, 28.07.

Example 41

N-(2-Phenethvl)-N ¹ -n-αuinolinvπ thiourea A solution of 3-aminoquinoline (2.90 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in -V,27-dimethylformamide (20 mL) was heated to 90°C for 72 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water,

saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate- to provide 3.62 g (59%) of the title product: mp 162-164°C; IR (KBr, cm ^"1 ) 3143, 1537, 1493, 1350, 1283, 1239, 749, 705; ^• iH NMR (300 MHz, DMSO-dδ) δ 9.9 (br s, IH) , 8.87 (d, J=4

Hz), IH), 8.35 (br s, IH) , 8.0 (d, J=8 Hz, IH) , 7.9 (d, J=8 Hz, IH) , 7.7-7.2 (m, 8H) , 3.8 (m, 2H) , 2.95 (t, J=7 Hz, 2H) ;

MS (FD) m/e 308 (M ⁺ ) ;

UV (EtOH) 331nm (8=5945), 257nm (8=27215), 247nm (8=28319),

212 nm (8=37613).

Example 42

N-(2-Phenethvl)-N'- 12-(4-me hvl)pvrimidine1 thiourea A solution of 2-aminopyrimidine (1.90 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in V,JV-dimethylformamide (20 mL) was heated to 115°C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.21 g (22%) of the title product: mp 174-176°C;

IR (KBr, cm" ¹ ) 3184, 3034, 1561, 1409, 1344, 1291, 1165, 1030, 836, 792; •--H NMR (300 MHz, DMSO-dβ) δ 11.3 (br s, IH) , 10.45 (br s, IH) , 8.4 (d, J=5 Hz, 2H) 7.4-7.2 (m, 5H) , 7.0 (d, J=5 Hz, IH), 3.85-3.75 (m, 2H) , 2.9 (t, J=7 Hz, 2H) , 2.3 (s, 3H) ;

MS (FD) m/e 272 (M+) ;

UV (EtOH) 274nm (6=25263), 248nm (6=15528), 203nm (6=17107).

Anal. Calcd for C1 H16 S:

Theory: C, 61.74; H, 5.92; N, 20.57. Found: C, 61.44; H, 6.11; N, 20.38.

Rxamnle 43 N-(2-phene hvl)-N'-.2- ( -(4-fluorophenyl) )thiazolvll thiourea A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol), triethylamine (1.01 g, 10 mmol), and 2-amino- 4-(4-fluorophenyl)thiazole hydroiodide (3.2 g, 10 mmol) in JT,iW-dimethylformamide (20 mL) was heated to 100°C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.06 g (30%) of the title product: mp 224-228°C; IR (KBr, cm" ¹ ) 3178, 3030, 1553, 840, 737, 670; NMR (300 MHz, DMSO-dβ) δ 11.70 (br s, IH) , 9.50 (br s,

IH), 7.8-7.2 (m, 10H) , 3.90-3.81 (m, 2H) , 2.95 (t, J=6 Hz, 2H) ;

MS (FD) m/e 357 (M+); UV (EtOH) 282nm (6=15755), 264nm (6=17277), 239nm (6=13046), 209nm (6=18271).

Anal. Calcd for C18H16N3S2F:

Theory: C, 60.42; H, 4.48; N, 11.74. Found: C, 60.79; H, 4.48; N, 11.63.

Example 44 N-(2-phenethvl)-N'-r2-(4-thiazolvlacetic acidl thiourea ethvl ester A solution of 2-phenethyl isothiocyanate (0.82 g, 5 mmol) and 2-aminothiazoleacetic acid methyl ester (0.85 g, 5 mmol) in iV/iV-dimethylformamide (20 mL) was heated to 100°C for 72 h, the reaction was cooled to room temperature and poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.52 g (31%) of the title product: mp 125-127°C;

IR (KBr, cm" ¹ ) 3168, 3085, 1740, 1557, 1524, ; NMR (300 MHz, DMSO-d6) δ 11.6 (br s, IH) , 9.4 (br s,

IH), 7.4-7.2 (m, 5H) , 6.85 (s, IH) , 3.8 ( , 2H) , 3.65 (s,

2H) , 3.6 (s, 3H), 2.9 (t, J=7 Hz, 2H) ;

MS (FD) m/e 335 (M ⁺ ) ;

UV (EtOH) 291nm (6=19133), 258nm (6=10917), 202nm (6=21433). Anal. Calcd for C15H17N3S2O2:

Theory: C, 53.71; H, 5.11; N, 12.53. Found: C, 53.96; H, 5.16; N, 12.79.

Example 45 N-(2-phenethvl)-N'-r2-thiazolvπ thiourea

A solution of 2-phenethyl isothiocyanate (7.5 g,

45.9 mmol) .and 2-aminothiazole (4.6 g, 45.9 mmol) in N,N- dimethylformamide (100 mL) was heated at 115°C for 12 h.

The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer

was concentrated and the residue recrystallized twice from ethyl acetate to provide 5.7 g (47%) of the title product: IR (KBr, cm ^-1 ) 3187, 3033, 2978, 1569, 1515, 1470, 1454, 1216, 1170, 1063; NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 9.7 (br s,

IH), 7.4-7.2 ( , 6H) , 7.1 (d, J=3 Hz, IH) , 3.8 (m, 2H) , 2.9

(t, J=7 Hz, 2H) ; MS (FD) m/e 263 (M ⁺ ) ; UV (EtOH) 288nm (6=19656), 257 nm (8=11658), 203 nm (ε=20054) .

Anal. Calcd for C12H13N3S2:

Theory: C, 54.72 H, 4.97; N, 15.95. Found: C, 54.63; H, 5.02; N, 15.85.

Example 46

N-(2-Q-cvclohexenvnethvl)-W-r2-thiazolvl1 thiourea A solution of 2-(l-cyclohexenyl)ethyl isothio¬ cyanate ^" (3.3 g, 20 mmol) and 2-aminothiazole (2.0 g, 20 mmol) in N,JW-dimethylformamide (20 mL) was heated at 100 C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, .and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.66 g (50%) of the title product: mp 147-148°C;

IR (KBr, cm ^"1 ) 3170, 3118, 2989, 1566, 1513, 1180, 706; iH NMR (300 MHz, DMSO-dβ) δ 11.6 (br s, IH) , 9.7 (br s,

IH), 7.38 (d, J=3 Hz, IH), 7.1 (d, J=3 Hz, IH) , 5.45 (br s, IH), 3.65 (m, 2H) , 2.25 (t, J=7 Hz, 2H) , 1.9 (m, 4H) , 1.5 (m, 4H);

MS (FD) m/e 267 (M+ ) ;

UV (EtOH) 288nm (ε=19663), 256 nm (8=10534), 201 nm (8=14819) .

Anal. Calcd for C12H13N3S2: Theory: C, 53.89 H, 6.41; N, 15.71.

Found: C, 54.15; H, 6.52; N, 15.84.

Example 47 N-(2-phenethvl)-N ^, -r2-(4-thiazolvlacetic acidl thiourea ethvl ester

A solution of 2-phenethyl isothiocyanate (3.62 g, 20 mmol) and 2-aminothiazoleacetic acid ethyl ester (3.72 g, 20 mmol) in N,2V-dimethylformamide (20 mL) was heated to 100 C for 24 h, the reaction was cooled to room temperature and poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue was purified by HPLC on silica gel to provide 1.7 g (24%) of the title product: mp 80-83°C;

IR (KBr, cm ^-1 ) 3184, 3109, 1730, 1580, 704, ; NMR (300 MHz, DMSO-d6) δ 11.6 (br s, IH) , 9.4 (br s,

IH) , 7.4-7.2 (m, 5H) , 6.85 (s, IH) , 4.1 (q, J=7 Hz, 2H) , 3.8 (m, 2H) , 3.65 (s, 2H) , 2.9 (t, J=7 Hz, 2H) , 1.2 (t, J=7 Hz, 3H) ;

MS (FD) m/e 349 (M ⁺ ) ;

UV (EtOH) 291nm (ε=15025), 250nm (ε=10893), 203nm (ε=24071) .

Anal. Calcd for C16H19N3S2O2:

Theory: C, 54.99; H, 5.48; N, 12.02. Found: C, 55.24; H, 5.62; N, 11.96.

Example 48

N-(2-phenethvl)-N ¹ -T2-(4-thiazolvlacetic acidl thiourea A solution of N-(2-phenethyl)-N'-[2-(4- thiazolylacetic acid] thiourea ethyl ester (0.7 g, 2.0 mmol) and IN NaOH (2.5 mL, 2.5 mmol) in 50 mL of 1/1 acetonitrile-water was stirred at room temperature for 24 h. The reaction was poured into ethyl acetate and washed with saturated sodium bicarbonate. The aqueous layer was acidified to pH 2 with IN HCl and extracted with ethyl acetate. The organic extracts were washed with brine and concentrated. The residue was crystallized from ethyl acetate to provide 0.29 g (45%) of the title product: mp 188-190°C; IR (KBr, cm" ¹ ) 3200-2800 (br) , 1659, 1586, 1377, 671, ; ^•• -H NMR (300 MHz, DMSO-d6) δ 12.0 (br s, 2H) , 9.6 (br s,

IH), 7.4-7.2 ( , 5H) , 6.85 (s, IH) , 3.8 (m, 2H) , 3.65 (s, 2H) , 2.9 (t, J=7 Hz, 2H); MS (FD) m/e 322 (M ⁺ ) ; UV (EtOH) 291nm (8=19464), 257nm (8=10601), 202nm (8=20396)

Anal. Calcd for C14H 5N3S2O2:

Theory: C, 52.32; H, 4.70; N, 13.07. Found: C, 52.58; H, 4.88; N, 13.34.

Example 49

N-(benzvl)-N'-r2-thiazolvl1 thiourea A solution of benzyl isothiocyanate (1.5 g, 10 mmol) and 2-aminothiazole (1.0 g, 10 mmol) in N, N-dimethyl- formamide (25 mL) was heated at 100°C for 12 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water,

saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 1.15 g (46%) of the title product: mp 165-167°C; IR (KBr, cm" ¹ ) 3171, 3038, 1560, 1509, 1451, 1183, 972, 691; !H NMR (300 MHz, DMSO-dδ) δ 11.7 (br s, IH) , 9.9 (br s,

IH) , 7.4-7.2 (m, 6H) , 7.05 (d, J=3 Hz, IH) , 4.8 (m, 2H) ; MS (FD) m/e 249 (M ⁺ ) ; UV (EtOH) 289nm (8=19103), 257 nm (8=12196), 204 nm (8=21328).

Anal. Calcd for C11H11N3S2:

Theory: C, 52.99 H, 4.47; N, 16.85. Found: C, 53.09; H, 4.50; N, 16.77.

x mpl 50

N-(2-Phenethvl)-N'-(2-pyrazinyl) thiourea A solution of 2-aminopyrazine (1.90 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in N,N-dimethylformamide (50 mL) was heated to 100°C for 17 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 0.95 g (18%) of the title product: mp 142-143°C;

IR (KBr, cm ^-1 ) 3181, 3049, 1606, 1533, 1472, 1314, 1221, 862, 725; - ^• -H NMR (300 MHz, DMSO-dδ) δ 11.02 (br s, IH) , 10.95 (br s, IH) , 8.5 (s, IH) , 8.18 (d, J=2 Hz, IH) , 8.05 (d, J=2 Hz,

1H), 7.4-7.2 (m, 5H) , 3.85-3.75 (m, 2H) , 2.9 (t, J=7 Hz,

2H);

MS (FD) m/e 258 (M+) ;

UV (EtOH) 318nm (8=10579), 263nm (8=17922), 202nm (8=15887). Anal. Calcd for C13H14N4S:

Theory: C, 60.44; H, 5.46; N, 21.69. Found: C, 60.45; H, 5.63; N, 22.02.

Example 51 N- (2-Phenethvl)- '-(3-pvrazolvl) thiourea

A solution of 3-aminopyrazole (1.66 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in 2vT,iV-dimethylformamide (50 mL) was heated to 100°C for 18.5 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 2.38 g (48%) of the title product: mp 142-144°C;

IR (KBr, cm ^-1 ) 3397, 3207, 3078, 1576, 1537, 1255, 1182,

751; NMR (300 MHz, DMSO-dβ) δ 12.4 (br s, IH) , 10.35 (br s,

IH), 9.85 (br s, IH) , 7.6 (s, IH) , 7.4-7.2 (m, 5H) , 5.83 (s, IH) , 3.75 (m, 2H) , 2.85 (t, J=7 Hz, 2H) ; MS (FD) m/e 246 (M+) ; UV (EtOH) 264nm (8=21473), 204nm (8=17842).

Anal. Calcd for C12H14N4S:

Theory: C, 58.51; H, 5.73; N, 22.74. Found: C, 58.80; H, 5.83; N, 23.00.

E? mp e 5 Preparation of N- ( 2-Phenethyl)-N'- (ohenyl) thiourea A solution of aniline (1.86 g, 20 mmol) and 2- phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in N,N- dimethylformamide (50 mL) was heated to 100°C for 18 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl ether/hexanes to provide 2.88 g (56%) of the title product: mp 102-104°C;

IR (KBr, cm ^"1 ) 3375, 1592, 1542, 1493, 1250, 1000, 695; ^■ T-H NMR (300 MHz, CDCI3) δ 7.85 (br s, IH) , 7.5-7.0 (m, 10H) , 6.0 (br s, IH) , 3.9 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 256 (M+) ; UV (EtOH) 248nm (ε=15081) , 206nm (ε=25573).

Anal. Calcd for C15H16N2S:

Theory: C, 70.28; H, 6.29; N, 10.93. Found: C, 70.14; H, 6.37; N, 10.97.

Example 53

N-(ethvl)-N'-(2-thiazolvl) thiourea A solution of ethyl isothiocyanate (1.74 g, 20 mmol) and 2-aminothiazole (2.0 g, 20 mmol) in i. ,N-dimethyl- formamide (50 mL) was heated at 100°C for 23 h. The reaction was cooled to room temperature, poured into ethyl acetate ^" , washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 0.48 g (13%) of the title product:

p 135-136°C;

IR (KBr, cm" ¹ ) 3165 , 3021, 1574 , 1501, 1435 , 1366 , 1215 ,

1179 , 695; H NMR (300 MHz , DMSO-dβ) δ 10 .4 (br s , 2H) , 7 .4 (d, J=3 Hz, IH) , 6.8 (d, J=3 Hz, IH) , 3 .7 ( , 2H) , 1.4 (t, J=7 Hz,

3H) ;

MS (FD) m/e 187 (M ⁺ ) ; UV (EtOH) 287nm (8=19544) , 256 nm (8=10213), 202 nm

(ε=11588) . Anal. Calcd for C6H9N3S2:

Theory: C, 38.48 H, 4.84; N, 22.44. Found: C, 38.71; H, 4.92; N, 22.66.

Example 54 N-(2-Phenethvl)- '-(2-chlorophenyl) thiourea

A solution of 2-chloroaniline (2.55 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in _Y,_V-dimethylformamide (50 mL) was heated to 100°C for 17 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue was purified by HPLC on silica gel to provide 1.18 g (20%) of the title product as a white solid: IR (KBr, cm ^"1 ) 3378, 3167, 1540, 1499, 1470, 1250, 1060, 758, 685; iH NMR (300 MHz, DMSO-d6) δ 7.55 (br s, IH) , 7.5-7.2 (m,

9H), 5.9 (br s, IH) , 3.9 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 290 (M+); UV (EtOH) 245nm (8=16042), 209nm (8=29276).

Anal. Calcd for C15H15N2SCI:

Theory: C, 61.95; H, 5.20; N, 9.63. Found: C, 61.69; H, 5.28; N, 9.84.

Example 55

N-(benzvl)-N ¹ -.2-(5-chloro)thiazolvll thiourea

A solution of benzyl isothiocyanate (3.0 g, 20 mmol) and 2-amino-5-chlorothiazole (2.69 g, 20 mmol) in JV,iV-dimethylformamide (25 mL) was heated at 100°C for 20 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by HPLC on silica gel to provide 0.86 g (15%) of the title product: mp 162-164°C;

IR (KBr, cm ^"1 ) 3154, 3003, 2958, 1588, 1515, 1421, 1231,

1192, 726;

^• iH NMR (300 MHz, DMSO-d6) δ 8.8 (br s, IH) , 7.45 (s IH) ,

7.4-7.2 (m, 5H) , 4.7 (m, 2H) ; MS (El) m/e 283 (M+);

UV (EtOH) 295nm (8=6457), 259 nm (8=5741), 208 nm (8=11042).

Example 56 N-(3-PhenvlproPvl)-N'-.2-(5-chloro)thiazolvll thiourea A solution of 3-phenylpropyl isothiocyanate

(3.54 g, 20 mmol) and 2-amino-5-chlorothiazole (2.69 g, 20 mmol) in i\7,iV-dimethylformamide (50 mL) was heated to 100°C. After 18 h, the reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by

HPLC on silica gel to provide 0.29 g (5%) of the title product: mp 121-130°C;

IR (KBr, cm ^"1 ) 3160, 3100, 2949, 1565, 1517, 1493, 698; NMR (300 MHZ, DMSO-d6) δ 10.8 (s, IH) , 8.5 (br s, IH) ,

7.4 (s, IH) , 7.3 (m, 5H) , 3.5 (m, 2H) , 2.6 (t, J=7.7 Hz,

2H) , 1.8 (m, 2H);

MS (FD) m/e 311 (M+) ;

UV (EtOH) 295nm (ε=14069), 259nm (8=12092) , 205nm (ε=27316) . Anal. Calcd for C13H14N3S2CI:

Theory: C, 50.07; H, 4.52; N, 13.47.

Found: C, 50.17; H, 4.51; N, 13.42.

Example 7 N-(2-Phenethyl)-N'-(5-tetrazpγl) thipurea

A solution of 5-aminotetrazole monohydrate (2.06 g, 20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in JV,-V-dimethylformamide (50 mL) was heated to 100°C for 21 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 0.59 g (12%) of impure title product: mp 161-177°C;

IR (KBr, cm ^-1 ) 3451, 3235, 3148, 1547, 1511, 1169, 697; iH NMR (300 MHz, DMSO-dδ) δ 10.8 (s, 1H) , 10.4 (m, IH) , 8.6

(br s, IH) , 7.2-7.0 (m, 5H) , 3.8 (m, 2H) , 2.8 (t, J=7 Hz, 2H); MS (FD) m/e 248 (M+) ;

UV (EtOH) 258nm (8=13630), 234nm (ε=15631) , 204nm (8=15594).

Example 5?

N-(2-Phenethvl)-N ¹ - 12-(4-methvl-5-acetvl)thiazolvll thiourea A solution of 2-phenethyl isothiocyanate (1.14 g, 7 mmol) and 2-amino-4-methyl-5-acetylthiazole (1.09 g, 7 mmol) in N, N-dimethylformamide (50 mL) was heated at 100°C for 23 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized twice from ethyl acetate to provide 0.21 g (9%) of the title product:

IR (KBr, cm" ¹ ) 3314, 3060, 1694, 1610, 1555, 1507, 1372, 1233, 980, 667;

^■ T-H NMR (300 MHz, DMSO-d6) δ 12.5 (br s, IH) , 8.8 (br s, IH) ,

7.4-7.2 (m, 5H) , 3.8 (m, 2H) , 2.9 (t, J=7 Hz, 2H) 2.4 (s, 3H) , 2.3 (s, 3H) ; MS (FD) m/e 319 (M ⁺ ) ; UV (EtOH) 319nm (8=16944), 230 nm (ε=13216), 201 nm (8=18476) .

Example 59 N-(2-Phenethyl)-N'-.2-(6-chloro)pyrazinyl1 thiourea A solution of 2-amino-6-chloropyrazine (2.59 g,

20 mmol) and 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) in N,2V-dimethylformamide (50 mL) was heated to 100°C for 35 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue

purified by HPLC on silica gel to provide 0.23 g (4%) of the title product: mp 194-195°C;

IR (KBr, cm-1) 3171, 2932, 1575, 1517, 1465, 1359, 1270, 1169, 707;

!H NMR (300 MHz, DMSO-dβ) δ 11.2 (s, IH) , 10.2 (br s, IH) ,

8.5 (s, IH) , 8.3 (s, IH) , 7.4-7.2 (m, 5H) , 3.85-3.75 (m, 2H) , 2.9 (t, J=7 Hz, 2H); MS (FD) m/e 292 (M+) ; UV (EtOH) 328nm (ε=12858) , 265nm (6=17945), 201nm (8=17746).

Example 60

N-(2-phenbutvl)-N ¹ -.2-thiazolvl1 thiourea A solution of 2-phenbutyl isothiocyanate (3.8 g, 20 mmol) and 2-aminothiazole (2.0 g, 20 mmol) in N,N- dimethyl-for ^* mamide (50 mL) was heated at 100°C for 26 h.

The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl ether to provide 2.3 g (39%) of the title product: mp 105-107°C

IR (KBr., cm" ¹ ) 3171, 2932, 1575, 1517, 1465, 1359, 1169,

1064, 707; -J-H NMR (300 MHz, DMSO-dς) δ 11.5 (br s, IH) , 9.7 (br s,

IH) , 7.4-7.1 (m, 7H), 3.6 (m, 2H) , 2.6 (m, 2H) , 1.6 (m,

4H);

MS (FD) m/e 291 (M ⁺ ) ;

UV (EtOH) 288nm (ε=19013), 256 nm (ε=10681), 203 nm (ε=18908) .

Anal. Calcd for C14H17N3S2:

Theory: C, 57.70; H, 5.88; N, 14.42. Found: C, 57.60; H, 6.08; N, 14.56.

Example 61

N- 12-Phenethyl)-N' - \2-(4- ( -nitro)phenvl)thiazolvll thiourea A solution of 2-phenethyl isothiocyanate (0.74 g, 4.5 mmol) and 2-amino-4-[ (3-nitro)phenyl]-thiazole (1.0 g, 4.5 mmol) in N,N-dimethylformamide (50 mL) was heated to 100 C for 120 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by HPLC on silica gel to provide 0.07 g (4%) of the title product: mp 192-196°C;

IR (KBr, cm- ¹ ) 3165, 3023, 1571, 1517, 1352, 1217, 1166; E NMR (300 MHz, DMSO-dζ) δ 11.7 (br ε, IH) , 9.0 (br s, IH) , 8.6 (s, IH) , 8.2 (m, 2H) , 7.75 (s, IH) , 7.6 (t, J=6 Hz, IH) , 7.4-7.2 (m, 5H) , 3.8 (m, 2H) , 2.95 (t, J=6 Hz, 2H);

MS (FD) m/e 384 (M+) ;

UV (EtOH) 286nm (8=21349) , 264nm (8=22766), 237nm (8=18307), 202nm (8=28514) .

Anal. Calcd for C18H16 4S2O2:

Theory: C, 56.23; H, 4.19; N, 14.57. Found: C, 56.12; H, 4.24; N, 14.47.

Exa ple 62 N- (n-Propvl) -_! ^■ -T2-f5-chlorothiazovl) 1 thiourea

A solution of 2-amino-5-chlorothiazole (2.69 g, 20 mmol) and n-propyl isothiocyanate (2.0 g, 20 mmol) in 7,2f-dimethylfo_rmamide (50 mL) was heated to 100°C for 19 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by HPLC on silica gel to provide 0.17 g (4%) of the title product: mp 128-133°C;

IR (KBr, cm ^-1 ) 3170, 2958, 1560, 1487, 1187, 691; NMR (300 MHz, DMSO-dβ) δ 11.5 (br s, IH) , 8.4 (br s,

IH), 7.4 (s IH), 3.4 (m, 2H) , 1.6 (m, 2H) , 0.95 (t, J=7 Hz, 3H) ;

MS (FD) m/e 235 (M+) ;

UV (EtOH) 294nm (8=12928), 259nm (ε=10257), 204nm (8=16979).

Anal. Calcd for C7H10N3S2CI:

Theory: C, 35.66; H, 4.28; N, 19.82. Found: C, 35.85; H, 4.19; N, 19.78.

Example 63

^• NT- (2-Phenethvl) -w- \2-(4-(2' .2 '-diphenyl-2 ' - cvano) thvl)thiazovl1 thiourea A solution of 2-amino(4-(2' ,2 ^■ -diphenyl-2 *- cyano)ethyl)thiazole (0.91 g, 3 mmol) and 2-phenethyl isothiocyanate (0.49 g, 3 mmol) in iV,N-dimethylformamide (50 mL) was heated to 100°C for 91 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated

and the residue purified by HPLC on silica gel to provide

0.28 g (20%) of the title product:

IR (KBr, cm ^"1 ) 3179, 3024, 2238, 1562, 1250, 698;

^■ T-H NMR (300 MHz, DMSO-dβ) δ 11.5 (s, IH) , 10.4 (br S, IH) , 7.5-7.2 (m, 15H) , 6.6 (s, IH) , 3.85 (s, 2H) , 3.8 (m, 2H) , 2.8 (t, J=7 Hz, 2H) ; MS (FD) m/e 468 (M ⁺ ) ; UV (EtOH) 292nm (6=12023), 259nm (6=5862), 202 nm (8=25516).

Anal. Calcd for C27H24 S2: Theory: C, 69.20; H, 5.16; N, 11.95.

Found: C, 69.05; H, 5.33; N, 11.76.

Example 64

N-(2-ri-cvclohexenvπethvl)-N'-r2-benzothiazolvπ thiourea A solution of 2- (1-cyclohexenyl)ethyl isothio¬ cyanate (3.3 g, 20 mmol) and 2-aminobenzothiazole (3.0 g, 20 mmol) in iV,N-dimethylformamide (50 mL) was heated at 100°C for 17.5 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed .with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.57 g (40%) of the title product: mp 185-186°C; IR (KBr, cm ^"1 ) 3179, 3044, 2921, 2830, 1556, 1523, 1441, 1196; iH NMR (300 MHz, DMSO-dδ) d 11.8 (br s, IH) , 10.2 (br s,

IH) , 8.0-7.2 (m, 4H) , 5.45 (ε, IH) , 3.65 (m, 2H) , 2.3 (t, J=7 Hz, 2H) , 1.9 (m, 4H) , 1.5 (m, 4H) ; MS (FD) m/e 317 (M ⁺ ) ;

UV (EtOH) 287nm (ε=20679), 201 nm (ε=25939) .

Anal. Calcd for C16H19N3S2:

Theory: C, 60.53; H, 6.03; N, 13.24. Found: C, 60.29; H, 5.94; N, 13.49.

Example 65

N-(2-phenethyl)-N*- 12-(4-ethvl)thiazolvll thiourea A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol) and 2-amino-4-ethylthiazole (1.28 g, 10 mmol) in iV^-dimethylformamide (50 mL) was heated at 100°C for 23 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic- layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.84 g (29%) of the title product: mp 145-146°C;

IR (KBr, cm ^-1 ) 3199, 3049, 2962, 1591, 1275, 685; ^• IH NMR (300 MHz, DMSO-dβ) δ 11.5 (br s, IH) , 9.8 (br s,

IH) , 7.4-7.2 (m, 5H) , 6.6 (s, IH) , 3.8 (m, 2H) , 2.9 (t, J=7 Hz, 2H) , 2.45 (q, J=7 Hz, 2H) , 1.1 (t, J=7 Hz, 3H) ; MS (FD) m/e 291 (M ⁺ ) ;

UV (EtOH) 292nm (6=19382), 257 nm (6=10362), 202 nm (8=20282).

Anal. Calcd for C14H17N3S2: Theory: C, 57.70; H, 5.88; N, 14.42.

Found: C, 57.47; H, 5.91; N, 14.51.

Example 66 1-r (2-benzothiazolyl)thiocarbamovl1 imidazole A solution of l,l'-thiocarbonyldiimidazole (8.9 g, 50 mmol) and 2-aminobenzothiazole (7.5 g, 50 mmol) in

acetonitrile (125 mL) was stirred at room temperature for 20 h. The resulting precipitate was collected by filtration to provide 5.75 g (44%) of the title product: IR (KBr, cm" ¹ ) 3199, 3049, 2962, 1628, 1461, 738; 1H NMR (300 MHz, DMSO-dδ) δ 8.85 (s, IH) , 8.1 (br s, IH) ,

7.9-7.0 (m, 6H) ;

MS (FD) m/e 261 (M ⁺ );

UV (EtOH) 366nm (8=13072), 305 nm (6=11556), 213 nm

(6=35893). Anal. Calcd for C11H8N4S2:

Theory: C, 50.75; H, 3.10; N, 21.52. Found: C, 50.50; H, 3.02; N, 21.49.

Example 67 N-.2-(2-chlorophenyl)ethvll-N--r2-benzothiazolyll thiourea

A solution of 1-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (2.1 g, 8 mmol) and 2-(2- chlorophenyl)-ethylamine (1.25 g, 8 mmol) in JV,iV- dimethylformamide (30 mL) was stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product: IR (KBr, cm" ¹ ) 3181, 3050, 1587, 1527, 1231, 753; ^■ ^H NMR (300 MHz, DMSO-dδ) δ 11.9 (br ε, IH) , 10.0 (br s, IH) , 7.8-7.2 (m, 8H) , 3.95 (m, 2H) , 3.1 (t, J=7 Hz, 2H) ; MS (FD) m/e 347 (M ⁺ ) ; UV (EtOH) 301nm (6=23050), 202 nm (6=30924).

Exa ple 68 N- 2-f3-chlorophenyl)ethvll-N-- ϊ 2-benzothiazolyll thiourea

A solution of l-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (1.04 g, 4 mmol) and 2-(3- chlorophenyl)ethylamine (0.63 g, 4 mmol) in JV,iV- di ethy1formamide (15 mL) was stirred at 100°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate ^' to provide 0.88 g (63%) of the title product: IR (KBr, cm" ¹ ) 3180, 2997, 1569, 1527, 1209, 755; iH NMR (300 MHz, DMSO-dς) δ 11.9 (br s, IH) , 10.1 (br ε,

IH), 7.8-7.2 (m, 8H) , 3.9 (m, 2H) , 3.0 (t, J=7 Hz, 2H) ;

MS (FD) m/e 347 (M ⁺ ) ;

UV (EtOH) 301nm (6=25367), 202 nm (6=31735). Anal. Calcd for C16H14N3S2CI:

Theory: C, 55.24; H, 4.06; N, 12.08.

Found: C, 55.05; H, 4.05; N, 12.03.

Example 69 N-.2-f4-ohlorophenvl)ethvll-N'-r2-henzothiazolvll thiourea

A solution of l-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (1.04 g, 4 mmol) and 2-(4- chlorophenyDethylamine (0.63 g, 4 mmol) in N,N- dimethyϊformamide (15 mL) was stirred at 100°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.89 g (64%) of the title product:

IR (KBr, cm" ¹ ) 3180, 2997, 1569, 1527, 1257, 755; NMR (300 MHz, DMSO-dβ) δ 12.0 (br s, IH) , 10.0 (br s, IH), 7.9-7.2 (m, 8H) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H) ; S (FD) m/e 347 (M ⁺ ) ;

UV (EtOH) 301nm (6=25731), 218nm (6=29376), 202 nm (ε=28033) .

Anal. Calcd for C16H14N3S2CI:

Theory: C, 55.24; H, 4.06; N, 12.08. Found: C, 55.27; H, 4.02; N, 12.10.

Example 7p

N-r2-(2-m thoxyphenyl)ethvl1-N'- J 2-benzothiazolyl1 thiourea A solution of l-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (1.04 g, 4 mmol) and 2-(2- methoxyphenyl)ethylamine (0.62 g, 4 mmol) in N,N- dimethy1formamide (15 mL) was stirred at 100°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.9 g (66%) of the title product:

IR (KBr, cm" ¹ ) 3180, 1672, 1539, 1437, 1202, 1137, 783; iH NMR (300 MHz, DMSO-dδ) δ 12.0 (br s, IH) , 10.0 (br s,

IH) , 7.9-7.0 (m, 8H) , 3.85 (m, 2H) , 3.75 (s, 3H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 343 (M+);

UV (EtOH) 301nm (ε=25894), 218nm (8=28357), 202 nm (8=32552) .

Anal. Calcd for C17H17N3OS2:

Theory: C, 59.45; H, 4.99; N, 12.23. Found: C, 59.70; H, 5.01; N, 11.99.

Example 7

N-.2-( -methoxyphenyl)ethvll-N--r2-benzothiazolvll thiourea A solution of l-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (1.04 g, 4 mmol) and 2-(3-

methoxyphenyl)ethyl-amine (0.62 g, 4 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.77 g (56%) of the title product:

IR (KBr, cm" ¹ ) 3180, 1670, 1543, 1479, 1205, 1136, 718; IH NMR (300 MHz, DMSO-dβ) δ 11.9 (br s, IH) , 10.05 (br s,

IH), 7.9-6.8 (m, 8H) , 3.87 (m, 2H) , 3.75 (s, 3H) , 2.95 (t, J=7 Hz, 2H); MS (FD) m/e 343 (M ⁺ ) ;

UV (EtOH) 301nm (ε=24893), 216nm (6=28250), 203 nm (6=33504) .

Anal. Calcd for C17H17N3OS2:

Theory: C, 59.45; H, 4.99; N, 12.23. Found: C, 59.36; H, 5.02; N, 12.00.

Example 72 N-T2-(4-methoxyphenyl)ethvll-N'-T2-benzothiazolyll thiourea A solution of l-[ (2-benzothiazolyl)- thiocarbamoyl] imidazole (1.04 g, 4 mmol) and 2-(4- methoxyphenyDethylamine (0.62 g, 4 mmol) in N, N- dimethylforma ide (15 mL) was stirred at 100°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.85 g (62%) of the title product:

IR (KBr, cm-1) 3162, 1610, 1572, 1255, 1208, 1106, 761; iH NMR (300 MHz, DMSO-dg) δ 11.9 (br s, IH) , 10.05 (br s,

IH), 7.9-6.8 ( , 8H) , 3.85 (m, 2H) , 3.75 (s, 3H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 343 (M ⁺ ) ;

UV (EtOH) 301nm (6=22113), 218nm (6=23878), 201 nm (6=28098) .

Anal. Calcd for C17H17N3OS2:

Theory: C, 59.45; H, 4.99; N, 12.23. Found: C, 59.33; H, 5.06; N, 12.04.

Example 73 1-r (2-r4.5-dimethvl1thiazolvl) thiocarbamovll imidazole

A solution of 1,1'-thiocarbonyldiimidazole (1.8 g, 10 mmol), 2-amino-4,5-dimethylthiazole hydrochloride (1.65 g, 10 mmol) and triethylamine (1.01 g, 10 mmol) in acetonitrile (40 mL) was stirred at room temperature for 7 h. The solvent was removed in vacuo to afford crude of the title product as a yellow solid used in the next step without purification.

Example 74 N-F2-(2-chlorophenyl)ethvll-N-- . 2-(4.5-dimethyl)thiazolyll thipvirea

A solution of l-[ (2-[4,5-dimethyl]thiazolyl) thio-carbamoyl] imidazole (10 mmol) and 2-(2-chlorophenyl)- ethylam ne (1.55 g, 10 mmol) in N,N-dimethylformamide (30 mL) was stirred at 90°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.1 g (65%) of the title product: IR (KBr, cm- ¹ ) 3171, 3013, 1583, 1549, 1510, 1216, 759;

1H NMR (300 MHz, DMSO-d6) δ 11.45 (br s, IH) , 9.75 (br ε, IH), 7.5-7.2 (m, 4H) , 3.85 (m, 2H) , 3.05 (t, J=7 Hz, 2H) , 2.2 (ε, 3H) , 2.05 (ε, 3H) ; MS (FD) m/e 325 (M+) ,- UV (EtOH) 297nm (ε=9209), 257nm (ε=5133), 201 nm (ε=14635) .

Example 75 ^• ST- T2-(3-chlorophenyl . ethvll-H'- \2-(4.5-dimethvl)thiazolyl 1 thiourea A εolution of l-[ (2-[4,5-dimethyl]thiazolyl) thio-carbamoyl] imidazole (10 mmol) and 2- (3-chlorophenyl) - ethylamine (1.55 g, 10 mmol) in (30 mL) was- stirred at 90°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.2 g (67%) of the title product:

IR (KBr, cm-1) 3182, 3018, 1584, 1549, 1511, 1215, 788; 1H NMR (300 MHz, DMSO-d6) δ 11.45 (br s, IH) , 9.8 (br ε,

IH), 7.4-7.2 (m, 4H) , 3.85 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ,

2.2 (s, 3H), 2.05 (s, 3H);

MS (FD) m/e 325 (M ⁺ ) ;

UV (EtOH) 297nm (ε=6543), 257nm (8=3650). Anal. Calcd for C14H16N3S2CI:

Theory: C, 51.60; H, 4.95; N, 12.89. Found: C, 51.73; H, 4.99; N, 13.16.

Example 76

N-.2- (2-methoxyphenyl)ethvll-N'- \2- (4.5-dimethyl)thiazolvll thipurea

A solution of l-[ (2-[4,5-dimethyl]thiazolyl) thio-carbamoyl] imidazole (47) (10 mmol) and 2-(2- methoxyphenyl)ethyla ine (1.51 g, 10 mmol) in N,N- dimethylformamide (30 mL) was stirred at 90°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.9 g (65%) of the title product: mp 178-180°C; IR (KBr, cm-1) 3175, 2998, 1598, 1495, 1213, 760, 707; NMR (300 MHz, DMSO-dδ) d 11.4 (br ε, IH) , 9.75 (br ε,

IH) , 7.25-6.8 (m, 4H) , 3.8 (s, 3H) , 3.78 (m, 2H) , 2.87 (t,

J=7 Hz, 2H) , 2.2 (ε, 3H) , 2.05 (s, 3H) ;

MS (FD). m/e 321 (M+) ;

UV (EtOH) 297nm (ε=18573), 258nm (8=10587), 202 nm (6=28862).

Anal. Calcd for C15H19N3OS2:

Theory: C, 56.04; H, 5.96; N, 13.09. Found: C, 56.29; H, 6.19; N, 13.27.

Example 77

N-'2-( -methoxyphenyl)ethyll-N ¹ -T2- (4,5-dimethyl)thiazolyll thiourea A solution of 1-[ (2-[4,5-dimethyl]thiazolyl) thiocarbamoyl] imidazole (10 mmol) and 2- (3- methoxyphenyl)ethylamine (1.51 g, 10 mmol) in N,N- dimethylformamide (30 mL) was stirred at 90°C for 1 h. The

reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.2 g (69%) of the title product: mp 146-148°C;

IR (KBr, c -1) 3179, 3035, 1587, 1551, 1214, 701, 682; 1H NMR (300 MHz, DMSO-dg) δ 11.45 (br s, IH) , 9.8 (br s,

IH), 7.25-6.8 (m, 4H), 3.8 (m, 2H) , 3.75 (s, 3H) , 2.85 (t, J=7 Hz, 2H), 2.2 (s, 3H), 2.05 (s, 3H) ; MS (FD) m/e 321 (M ⁺ ) ; UV (EtOH) 297nm (8=16992), 258nm (8=9639), 202 nm (8=27993).

Anal. Calcd for C15H19N3OS2:

Theory: C, 56.04; H, 5.96; N, 13.09. Found: C, 56.01; H, 5.96; N, 13.30.

Example 78 N-.2-(4-methoxyphenyl)ethvll-N'-'2-(4.5-dimethvl)thiazolvll thipurea A solution of l-[(2-[4,5-dimethyl]thiazolyl) thiocarbamoyl] imidazole (10 mmol) and 2-(4- methoxyphenyl)ethylamine (1.51 g, 10 mmol) in N,N- dimethylformamide (30 mL) was stirred at 90°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 2.2 g (69%) of the title product: mp 178-180°C; IR (KBr, cm ^"1 ) 3174, 3024, 1590, 1552, 1214, 688;

iH NMR (300 MHz, DMSO-dβ) δ 11.45 (br ε, IH) , 9.8 (br ε,

IH) , 7.2(d, J=8 Hz, 2H) , 6.85 (d, J=8 Hz, 2H) , 3.78 (m,

2H) , 3.75 (ε, 3H), 2.85 (t, J=7 Hz, 2H) , 2.2 (ε, 3H) , 2.05

(s, 3H); MS (FD) m/e 321 (M ⁺ );

UV (EtOH) 297nm (6=8102), 258nm (6=4813), 223 nm (8=6614).

Example 79

N-(2-phenethvl)-N'-(5-r -methvl1isothiazolyl) thiourea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 5-amino-3-methylisothiazole (3.0 g, 20 mmol) in N,iV-dimethylformamide (30 mL) was heated at 100°C 24 h, the reaction was cooled to room temperature and poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 5.5 g (100%) of the title product: mp 213-216°C; . IR (KBr, cm" ¹ ) 3188, 2744, 1593, 1525, 1495, 1423, 1313, 1248, 829, 777, 752, 705, 670, 522; iH NMR (300 MHz, DMSO-d6) δ 9.3 (br s, IH) , 7.4-7.2 (m,

5H), 6.85 (br s, IH) , 3.7(m, 2H) , 2.9 (t, J=7 Hz, 2H) , 2.45 (s, 3H); MS (FD) m/e 278 (M+) ;

UV (EtOH) 286nm (8=12263), 247 nm (8=14257), 206 nm (6=27381).

Exa ple 80 1-F (2-.6-fluoro benzothiazolyl)thiocarbamovll imidazole A solution of 1,1'-thiocarbonyldiimidazole (17.8 g, 100 mmol) and 2-amino-6-fluorobenzothiazole (16.8 g, 100 mmol) in acetonitrile (700 mL) was stirred at room tempera¬ ture for 20 h, then at 40°C for 6 h. The resulting precipitate was collected by filtration to provide 19.5 g (70%) of the title product:

IR (KBr, cm ^-1 ) 3200, 3050, 2558, 1595, 1560, 1461, 1331, 1216, 1088, 1040, 948, 740, 648, 627; iH NMR (300 MHz, DMSO-d6) δ 12.0 (br S, IH) , 8.85 (s, IH) ,

8.1 (br s, IH) , 7.9-7.0 (m, 4H) ;

MS (FD) m/e 279 (M+H) ;

UV (EtOH) 364nm (6=7372), 306 nm (6=13593), 213 nm (8=31325) .

Anal. Calcd for C11H7N4S2F:

Theory: C, 47.47; H, 2.54; N, 20.13. Found: C, 47.72; H, 2.66; N, 20.09.

Example 81

N-T2-(2-chlorophenyl)ethvll-N--(2-T6- luoro!benzothiazolyl) thipurea

A solution of l-[ (2-[6-fluoro]benzothiazolyl)- thio-carbamoyl] imidazole (2.1 g, 8 mmol) and 2-(2-chloro- phenyl)ethylamine (1.25 g, 8 mmol) in N,N-dimethylformamide (30 mL) was stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product: mp 188-189°C;

IR (KBr, cm- ¹ ) 3166, 3014, 1560, 1538, 1460, 1217, 1198,

853; NMR (300 MHz, DMSO-dδ) d 11.6 (br s, IH) , 9.8 (br ε,

IH) , 7.9-7.2 ( , 7H) , 3.9 (m, 2H) , 3.1 (t, J=7 Hz, 2H) ; MS (FD) m/e 365 (M ⁺ ) ;

UV (EtOH) 301nm (ε=22535) , 216nm (6=27344), 201 nm (6=28624) . Anal. Calcd for C16H13N3S2CIF:

Theory: C, 52.53; H, 3.58; N, 11.49. Found: C, 52.79; H, 3.72; N, 11.76.

Example 82

N-.2-(3-chlorophenyl)ethvll-N'-(2-F6-fluorolbenzothiazoly l) thj-pyrea A εolution of 1-[ (2-[6-fluoro]benzothiazolyl)- thiocarbamoyl] imidazole (2.1 g, 8 mmol) and 2- (3- chlorophenyl)ethylamine (1.25 g, 8 mmol) in N,N-dimethyl- formamide (30 mL) waε stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product:

: mp 193-194°C;

IR (KBr, cm ^"1 ) 3171, 3015, 1557, 1526, 1460, 1229, 1201,

866; iH NMR (300 MHz, DMSO-d6) d 11.9 (br ε, IH) , 9.9 (br ε,

IH) , 7.9-7.2 (m, 7H) , 3.85 (m, 2H) , 3.0 (t, J=7 Hz, 2H) ;

MS (FD) m/e 365 (M ⁺ ) ;

UV (EtOH) 301nm (ε=24232), 217nm (8=30020) , 201 nm

(8=31875) .

Anal. Calcd for C16H13N3S2CIF:

Theory: C, 52.53; H, 3.58; N, 11.49. Found: C, 52.50; H, 3.67; N, 11.38.

Example 83

N- T2-( -chlorophenyl) thvll-N ¹ -(2-T6-fluorolbenzothiazolyl) thiourea A solution of l-[ (2-[6-fluoro]benzothiazolyl)- thio-carbamoyl] imidazole (2.1 g, 8 mmol) and 2-(4-chloro- phenyl)ethylamine (1.25 g, 8 mmol) in N,N-dimethylformamide (30 mL) was stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product: : mp 217-218°C;

IR (KBr, cm-1) 3168, 3033, 1559, 1532, 1491, 1462, 1230, 1143, 809; iH NMR (300 MHz, DMSO-dδ) d 11.85 (br s, IH) , 9.8 (br s, IH) , 7.9-7.2 (m, 7H) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H) ; MS (FD) m/e 365 (M ⁺ );

UV (EtOH) 301nm (8=24527), 220nm (8=31031).

Anal. Calcd for C16H13N3S2CIF:

Theory: C, 52.53; H, 3.58; N, 11.49. Found: C, 52.80; H, 3.70; N, 11.34.

Example 84 N-F2-f2-methoxyphenyl)ethvll-N--(2-T6- fluorolbenzothiazolyl) thiourea A solution of l-[(2-[6-fluoro]benzothiazolyl)- thiocarbamoyl] imidazole (2.1 g, 8 mmol) and 2-(2-methoxy- phenyl)ethylamine (1.25 g, 8 mmol) in i\T,i7-dimethylformamide

(30 mL) was stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product: : mp 208-209°C;

IR (KBr, cm" ¹ ) 3168, 3034, 1561, 1536, 1462, 1242, 1198,

852; NMR (300 MHz, DMSO-dβ) d 11.85 (br s, IH) , 9.8 (br ε,

IH), 7.9-7.0 (m, 7H), 3.85 (m, 2H) , 3.8 (ε, 3H) , 2.9 (t, J=7 Hz, 2H);

MS (FD) m/e 361 (M ⁺ ) ;

UV (EtOH) 300nm (8=24273), 218nm (6=28369), 201 nm

(ε=34036) .

Anal. Calcd for C17H16N3OS2CF: Theory: C, 56.49; H, 4.46; N, 11.63.

Found: C, 56.56; H, 4.59; N, 11.66.

Example 85

N- \2-( -methoxyphenyl)ethvll-N'-(2-T6- fluoro!benzothiazolyl) thiourea

A solution of 1-[ (2-[6-fluoro]benzothiazolyl)- thiocarbamoyl] imidazole (2.1 g, 8 mmol) and 2- (3-methoxy- phenyl)ethylamine (1.25 g, 8 mmol) in N,N-dimethylformamide (30 mL) was stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was cryεtallized from ethyl acetate to provide 1.6 g (57%) of the title product: mp 190-192°C; IR (KBr, cm ^"1 ) 3050, 1536, 1460, 1302,1221, 1060, 674;

NMR (300 MHz, DMSO-d6) d 11.9 (br s, IH) , 9.9 (br s, IH) , 7.9-7.0 (m, 7H) , 3.85 ( , 2H) , 3.75 (s, 3H) , 2.95 (t, J=7 Hz, 2H);

MS (FD) m/e 361 (M ⁺ ) ;

UV (EtOH) 301nm (ε=24608) , 218nm (ε=28535) , 201 nm (ε=37337) . Anal. Calcd for C17H16N3OS2CF:

Theory: C, 56.49; H, 4.46; N, 11.63.

Found: C, 56.21; H, 4.54; N, 11.40.

Example 86 N- \2-(4-methoxyphenyl)ethvll-w-(2-T6- luorolbenzothiazolyl) thiourea A solution of l-[(2-[6-fluoro]benzothiazolyl)- thio-carbamoyl] imidazole (54) (2.1 g, 8 mmol) and 2-(4- methoxy-phenyl)ethylamine (1.25 g, 8 mmol) in JV,iV- dimethylformamide (30 mL) waε stirred at 100°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.6 g (57%) of the title product: : mp 203-204.5°C;

IR (KBr, cm- ¹ ) 3001, 1561, 1539, 1458, 1251, 860, 818; iH NMR (300 MHz, DMSO-dg) d 11.85 (br s, IH) , 9.85 (br s, IH), 7.9-6.9 (m, 7H) , 3.85 (m, 2H) , 3.75 (s, 3H) , 2.9 (t, J=7 Hz,.2H);

MS (FD) m/e 361 (M+) ;

UV (EtOH) 301nm (ε=23562), 222 nm (ε=28328) .

Anal. Calcd for C17H16N3OS2CF:

Theory: C, 56.49; H, 4.46; N, 11.63. Found: C, 56.70; H, 4.42; N, 11.79.

Examole 87 1-r (2-r5-chloro!thiazolyl)thiocarbamoyl1 imidazole A solution of 1,1'-thiocarbonyldii idazole (25 g, 140 mmol) and 2-amino-5-chlorothiazole (18.8 g, 140 mmol) in acetonitrile (300 mL) was stirred at room temperature for 23 h. The resulting precipitate was collected by filtration to provide 21.2 g (62%) of the title product: iH NMR (300 MHz, DMSO-dδ) δ 9.5 (ε, IH) , 8.2 (ε, IH) , 7.6

(ε, IH) , 7.5 (ε, IH) ; MS (FD) m/e 176 (M ⁺ -C3H3N2).

E ample gg N-r2-(2-chlorophenvl)ethvll-N'-T2-f5-chloro)thiazolvll thipurea

A solution of 1-[ (2-[5-chloro]thiazolyl)thio¬ carbamoyl] imidazole (0.68 g, 2.8 mmol) and 2-(2-chloro- phenyl)ethylamine (0.43 g, 2.8 mmol) in N , N- dimethylformamide (15 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.68 g (73%) of the title product: mp 172-174°C;

IR (KBr, cm" ¹ ) 3318, 2873, 1606, 1526, 1513, 1436, 1351, 1237, 747; !H NMR (300 MHz, DMSO-d6) δ 10.7 (br s, IH) , 8.5 (br s, IH) , 7.4 (s, IH) , 7.4-7.2 (m, 4H) , 3.8 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ^' ;

MS (FD) m/e 331 (M ⁺ ) ;

UV (EtOH) 295nm (8=11804), 259 nm (8=10397), 202 nm (8=27067) .

Anal. Calcd for C12H11N3S2CI2 Theory: C, 43.38; H, 3.34; N, 12.65.

Found: C, 43.61; H, 3.57; N, 12.57.

Example 89 N- \2-( -chlorophenyl)ethvll-N'- \2-(5-chloro)thiazolvll thiourea

A solution of l-[ (2-[5-chloro]thiazolyl)thio¬ carbamoyl] imidazole (1.22 g, 5 mmol) and 2-(3-chloro- phenyl)ethylamine (0.78 g, 5 mmol) in N,N-dimethylformamide (20 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer waε concentrated and the reεidue recryεtallized from ethyl ether to provide 0.9 g (54%) of the title product: mp 154-155°C;

IR (KBr, cm ^-1 ) 3178, 3044, 1557, 1520, 1458, 1346, 1196,

784, 755; iH NMR (300 MHz, DMSO-dδ) δ 11.6 (br ε, IH) , 8.4 (br s,

IH) , 7.4 (s, IH) , 7.4-7.2 (m, 4H) , 3.7 (m, 2H) , 2.8 (t, J=7 Hz, 2H) ;

MS (FD) m/e 331 (M ⁺ ) ;

UV (EtOH) 296nm (ε=14281) , 259 nm (8=12090), 205 nm (8=29809).

Examole 90 N-.2- (4-chlorophenv3 )ethvll-N'- \2-(5-chloro)thiazolvll thiourea A solution of 1-[ (2-[5-chloro]thiazolyl)thiocar- bamoyl] imidazole (1.22 g, 5 mmol) and 2- (4-chloro- phenyl)ethylamine (0.78 g, 5 mmol) in N,N-dimethylformamide (20 mL) was εtirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 1.1 g (66%) of the title product: mp 178-180°C;

IR (KBr, cm" ¹ ) 318O, 2927, 1610, 1536, 1492, 1325, 1256, 1181, 1088, 1014, 811, 747, 643, 508; iH NMR (300 MHz, DMSO-dδ) δ 11.6 (br s, IH) , 8.4 (br s,

IH) , 7.4 (s, IH) , 7.32 (d, J=8 Hz, 2H) , 7.22 (d, J=8 Hz, 2H) , 3.7 (m, 2H) , 2.8 (t, J=7 Hz, 2H) ; MS (FD) m/e 331 (M ⁺ ) ; UV (EtOH) 295nm (8=13675), 259 nm (8=12330), 202 nm (ε=27524) .

Anal. Calcd for C12H11N3S2CI2:

Theory: C, 43.38; H, 3.34; N, 12.65.

Found: C, 43.61; H, 3.46; N, 12.85.

Examole 91 N- (2-fl-methvl)-2-pvrrolvlethvl)-N--(2-thiazolvl)thiourea

An isothiocyanate of 2-(2-aminoethyl)-1- methylpyrrole was prepared according to Ann 657, 104-107 (1962). iH-NMR (CDC1 ₃ ) δ 2.95 (t, 2H) , 3.55 (s, IH) , 3.65

(t, 2H), 5.9-5.95 (m, IH) , 6.05 (t, IH) , 6.55 (t, IH) . Thiε isothiocyanate was disεolved in DMF (4 ml) . To thiε solution waε added 200 mg (2 mmol) of 2-aminothiazole and the solution was heated at 100°C for about 16 h. EtOAc was added and the organic phase was washed with εat. NH4CI- solution and brine. After drying (Na2Sθ4) , the product was purified on a silica gel column, using EtOAc/Hexane 1:1, as eluent. This gave almost pure titled product. Recryεtallization from toluene/hexanes gave 150 mg of the titled product.

Mp: 183-184°C (dec). iH-NMR (DMSO-dg) 62.86 (t, 2H) , 3.55 (s, 3H) , 3.75 (q,

2H), 5.85-5.90 (m, 2H) , 6.62 (s, IH) , 7.09 (d, IH) , 7.36 (d, IH) , 9.74 (broad s, IH) , 11.65 (broad s, IH) . 13C-N R (DMSO-dg) δ 25.03, 33.31, 43.92, 106.24, 106.31,

112.03, 121.55, 129.33, 136.71, 161.68, 178.25.

Example 92 N- (2-(l-pjperazinvlethvl) )-N*-(2-thiazolyl)thiourea 1.78 g Thiocarbonyldiimidazole (10 mmol) was added to a solution of 1.29 g l-(2-aminoethyl)piperazine (10 mmol) in 5 ml methylene chloride at 0°C. The reaction mixture was warmed to room temperature, and εtirred for 30 minuteε. The methylene chloride was evaporated, and 40 ml dimethylformamide together with 10.01 g 2-aminothiazole were added. The mixture was stirred 17 h at 100°C. The

product was purified by chromatography on a silica gel column eluted with mixtures of methanol and chloroform. Cryεtallization of the salt with oxalic acid gave further t * purification. 5 iH-NMR (oxalate in D2O) : 2.8-3.7 ppm (m) , 6.75 ppm (d) , 7.1 ppm (d) .

Example 93 N-(2-(2-chloro)Phenethvl)-N--(2-thiazolvl)thiourea

10 Thiocarbonyldiimidazolide (980 mg, 5.5 mmole) was dissolved in 20 ml methylene chloride. To the solution was added dropwise 2-chlorophenethylamine (0.69 ml, 5 mmole) in 20 ml methylene chloride at 0°C. After reaction for 30 min at 0°C, it was warmed up to room temperature,

15 and then concentrated to small volume in vacuo. To the residue waε added 20 ml DMF and 2-aminothiazole (700 mg, 7 mmole) . It waε kept at 100°C for 3 hourε. After cooling to room temperature, it waε poured into 1 N HCl εolution (100 ml) and extracted with ethyl acetate (2 x 100 ml); the

20 organic phaεe was washed with brine and dried over magnesium sulfate. The solution was concentrated in vacuo and separated by silica gel column chromatography. Yield = 440 mg (30%) . -NMR (CDCI3) δ7.38-7.17 (m, 5H, ClPh, thiazol) 6.81 (d,

25 J = 3.7 Hz, IH, thiazole), 4,02 (q, J = 7Hz, 2H, CH NH) , 3.17 (t, J = 7.1 Hz, CH ₂ ) .

¹³ C-NMR (CDCI3) δl77.5 (C=S) , 161 (thiazol), 137.5 (thiazol), 136.0 (ClPh), 134.1 (ClPh), 131.1 (ClPh), 129.5 (ClPh), 128.0 (ClPh) and 126.7 (ClPh) 111.1 (thiazol), 44.8

30 (CH ₂ ) and 32.3 (CH ₂ ) .

Example 94 N- (2-(2-methoxy)phenethyl)-N'-(2-thiazolvl)thiourea To a solution of 1.8 g (10 mmol) 1,1'- thiocarbonyldiimidazole in CH2CI2 (30 ml) at 0°C was added 1.46 ml (10 mmol) of 2-methoxyphenethylamine. The solution was then stirred for 1 hour. After the addition of hexane, the reaction mixture was filtered and evaporated. The residue was dissolved in DMF (8 ml) and 1.0 g (10 mmol) 2- aminothiazole (Merck) was added. The reaction mixture was heated at 100°C for about 16 h. Thereafter, EtOAc and diluted HCl-solution were added. The organic phase was separated and washed with diluted HCl-solution, sat. NH4CI- solution and water (x 2), respectively. After drying over Na ₂ Sθ , the product was purified on a silica gel column, using hexaneε/EtOAc (2:1) aε eluent, to give 0.77 g crude product. Recrystallization from toluene gave 0.54 g of still crude titled product. A final purification was achieved by the use of a I2O3 column eluted with CHCI3

(containing 0.5% EtOH) as the eluent. This gavς.85 mg of the titled product. Mp: 126.0-127.5°C. iH-NMR (CDCI3) δ 3.03 (t, 2H), 3.82 (s, 3H) , 3.96 (q, 2H) ,

6.79-6.93 (m, 3H) , 7.20-7.26 (m, 3H) , 10.35 (broad s, IH) , 10.73 (broad s, IH) . ¹³ C-NMR (CDCI3) δ 29.59, 45.69, 55.19, 110.22, 110.97,

120.40, 126.75, 127.96, 130.78, 137.72, 157.62, 161.58, 177.34.

Example 95 W-(2-(4- luoro)Phenethvl)-N*-(2-thiazolvl)thiourea In a manner analogous to Example 94, using 4- fluorophenethylamine, the titled product resulted.

Analyεeε: Calculated: C 51.22, H 4.30, N 14.93. Found: C

51.0, H 4.35, N 14.8.

Mp: 124.5-126.0°C. iH-NMR (CDCI3) δ 3.0 (t, 3H) , 4.0 (q, 3H) , 6.86 (d, IH) , 7.0-7.3 (m, 5H) .

¹³ C-NMR (CDCI3) δ 34.05, 46.82, 111.35, 115.38 (d, 2C) ,

130.39 (d, 2C), 134.20 (d, IC) , 137.46, 161.74 (d, IC), 161.83, 177.52.

Example 96

N-(2- (4-nitro)phenethvl)-N'-(2-thiazolvl)thiourea

In a manner analogouε to Example 93, using 4- nitrophenethylamine, the titled product resulted. iH-NMR -(CDC13) 68.17 (d, J = 8.6 Hz, 2H, 0 ₂ NPh) , 7.45 (d, J = 8.6 Hz, 2H, 02NPh) , 7.21 (d, J = 3.7 Hz, IH, thiazole),

6.84 (d, J = 3.7 Hz, IH, thiazole), 4.01 (q, J = 5.7 Hz, 2H, CH ₂ NH) , 3.15 (t, J = 7.2 Hz, 2H, CH2).

¹³ C-NMR (CDCI3 + CD3OD) δ 179 (C=S), 161 (thiazole), 146.4

(02NPh) , 136.9 (thiazole), 129 (02NPh) , 123.4 (O2NPI1) , 111.1 (thiazole), 45.3 (CH ₂ ), 34.3 (CH2).

Example 97 N-(2-(4-amino)phenethvl)-N'-(2-thiazolvl)thiourea

The titled product was prepared by reduction of the product from Example 96 with iron and hydrochloric acid uεing the literature procedure (Vogel, Textbook of Practical Organic Chemistry. 4th ed. , p.657, Longman 1978). iH-NMR (CDCI3) δ 7.23 (d, J = 3.8 Hz, IH, thiazole), 7.07 (d, J = ^" 8.3 Hz, 2H, H NPh) , 6.79 (d, J = 3.7 Hz, IH, thiazole), 6.65 (d, J = 8.3 Hz, 2H, H ₂ NPh) , 3.91 (q, 2H, CH2NH) , 2.91 (t, J = 7.1 Hz, 2H, CH2).

¹³ C-NMR (CDCI3 + CD3OD) δ 177 (C=S ) , 161 (thiazole), 144 (H ₂ NPh), 137.3 (thiazole), 129.5 (H ₂ NPh) , 128.6 (H2NPI1) , 115.4 (H NPh), 110.9 (thiazole), 46.7 (CH ₂ ), 33.6 (CH ₂ ) .

Example 98

N-(2-(4-methoxy)phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 93, using 4- methoxyphenethylamine, the titled product resulted. IH-NMR (CDCI3) δ 7.22-7.18 (t, 3H, MeOPh and thiazole), 6.85 (d, J = 8.5 Hz, 2 H, MeOPh) , 6.81 (d, J = 3.7 Hz, 1 H, thiazole), 3.94 (q, J = 7.1 Hz, 2 H, CH2NH) , 3.79 (s, 3H, MeO), 2.96 (t, J = 7.1 Hz, 2H, CH ₂ ) . ¹ C-NMR (CDCI3) δ 177.3 (C=s), 161.6 (thiazole) 158.2

(MeOPh), 137.4 (thiazole), 130.4 (MeOPh), 129.7 (MeOPh), 113.8 (MeOPh), 111.0 (thiazole), 55.1 (MeO), 47.0 (CH2), 33.8 (CH ₂ ).

Example 99 N-(2-( -hvdroxv)phenethvl)-N--(2-thiazolvl)thiourea The titled product was prepared by treatment of the product of Example 98 with iodotrimethyl silane in dichloroethane according to literature procedure (H. Sakurai, Synthesis, p. 740, 1979) (Example 97). iH-NMR (CDCI3) δ 7.22 (d, J = 3.6 Hz, IH, thiazole), 7.14 (d, J = 8.4 Hz, 2H, HOPh), 6.81-6.77 (t, 2H, thiazole,

HOPh), 3.94 (q, 2H, CH ₂ NH ₂ ) , 2.94 (t, J = 7.2 Hz, 2H, CH ₂ ). ¹ C-NMR (CDCI3) δ 177.4 (C=S) , 161.4 (thiazole), 154.1

(HOPh), 137.6 (thiazole), 130.5 (HOPh), 129.9 (HOPh), 115.3 (HOPh), 110.9 (thiazole), 47.1 (CH ₂ ), 33.7 (CH ₂ ).

Exa ple 100 N- (2- (4-bromo)phenethvl)-N'-(2-thiazolvl)thiaurea In a manner analogouε to Example 93, using 4- bromophenethylamine, the titled product resulted. iH-NMR (CDCI3 + CD3OD) δ 7.43 (d, J = 6.4 Hz, 2 H, BrPh),

7.22 (d, J = 3.6 Hz, 1 H, thiazole), 7.15 (d, J = 6.3 Hz, 2 H, BrPh), 6.83 (d, J = 3.7 Hz, 1 H, thiazole), 3.95 (t, J = 7.1 Hz, 2H, CH ₂ NH), 2.94 (t, J = 7 Hz, 2H, CH ₂ ) . ¹³ C-NMR (CDCI3 + CD3OD) δ 177.5 (C=S) , 161.5 (thiazole), 137.4 (thiazole), 131.5 (BrPh), 130.5 (BrPh), 120.3 (BrPh), 111.1 (thiazole), 46.2 (CH ₂ ), 34.0 (CH ₂ ).

Example 101 N-(2-(l-pjperidinvl)ethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 93, using 1- piperidinylethylamine, the titled product resulted. iH-NMR (CDCI3) δ 7.32 (d, J = 3.7 Hz, 1 H, thiazole), 6.84 (d, J = 3.7 Hz, IH, thiazole), 3.80 (t, 2H, CH2NH) , 2.62 (t, J = 6.4 Hz, 2H, CH ), 2.48 (m, 2H, pip), 1.62 (m, 2H, pip), 1.46 (m, IH, pip).

¹³ C-NMR (CDCI3 + CD3OD) : 177.3 (C=S) , 161 (thiazole), 137.3 (thiazole), 111.1 (thiazole), 56.1 (CH2), 54.1 (pip), 42.2 (CH2), 25.6 (pip), 24.0 (pip).

Example 102

N-(2-morpholinoethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 91, using morpholinoethylamine, the title product resulted.

1H-NMR (250 MHz, CDCI3) δ 7.38 (d, IH, CH=CH) , 6.86 (d, IH, CH=CH) , 3.82 (q, 2H, CH ₂ -NH) , 3.86-3.71 (m, 4H, CH - O-CH2), 2.67 (t, 2H,CH ₂ -N (ring)), 2.62-2.52 (m, 4H, CH2-N-CH2) . ⁱ³ C-NMR (250 MHz, CDCI3) 8178, 163, 138, 112, 67, 57, 53,

42. Mp: 150.5 - 151.5°C.

Example 103 1- .2-Aminothia ole)-1'-imidazole thiocarbonvl

8.90 g Thiocarbonyldiimidazole (50 mmole) and

5.0 g 2-amiπothiazole (50 mmole) was added to 50 ml acetonitrile. The mixture was heated to 40°C, and stirred for 2 hours at this temperature. The mixture was cooled to 0°C, and the solid was filtrated off, and washed with 300 ml cold acetonitrile. The yield of pure product after drying was 9.7 g (46 mmole) .

Elemental anal: Found; C=39.3, H=2.8, N=26.2; Calc: C=40.0,

H=2.87, N=26.6. ¹ H-NMR (250 MHz, DMSO) δ 8.68 (s, IH, N=CH-N) , 7.97 (s, IH,

N-CH=CH-N) , 7.76 (d, IH, S-CH=CH-N) , 7.33 (d, IH, S-CH=CH- N), 7.08 (S, IH, N-CH=CH-N) .

Example 104 N-(2-Phenethvl)-N ¹ - Ϊ2-(6-hvdroxv)pvridvπthiourea

A εtirred solution of phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-6-hydroxypyridine (1.10 q, 10 mmol) in iY-methylpyrrolidinone (20 mL) was heated to 100°C. After 87.25 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic

phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (10% ethyl acetate/dichloromethane to 15% ethyl acetate) , followed by trituration with ethyl acetate to provide 1.15 g of the titled product (42%) as an off-white solid: mp 196-197°C;

IR (KBr, cm" ¹ ) 2937, 1668, 1595, 1475, 1428, 1365, 1219, 1158, 1023; iH NMR (300 MHZ, DMSO-d^) δ11.49 (br s, IH) , 10.82 (ε, IH) ,

10.33 (s, IH) , 7.52 (t, J=7.9 Hz, IH) , 7.25-7.14 (m, 5H) ,

6.53 (d, J=7.9 Hz, IH) , 6.19 (d, J=8.0 Hz, IH) , 3.80-3.73

( , 2H) , 2.92 (t, J=7.7 Hz, 2H) ; MS (FD) m/e 273 (M+) ;

UV (EtOH) 305nm (ε= 20692), 262nm (ε=13737), 247nm (ε=

18743), 203nm (ε=19201).

Anal. Calcd for C ₁₄ H ₁₅ N ₃ OS: C, 61.52; H, 5.53; N, 15.37.

Found: C, 61.73; H, 5.72; N, 15.57.

Example 105 N-(2-(2-naphthvl) thvl)-N'-(2-thiazolvl)thiourea

2-Naphthalenethylamine (256 mg, 1.5 mmole) and the product from Example 103 (400 mg, 1.9 mmole) was suεpended in DMF (5 ml) . The reaction mixture waε heated to 110°C and it became a clear solution in a few minutes.

After 1 hour, the reaction mixture was cooled to room temperature, and 20 ml methylene chloride waε added. The organic solution was washed successively with 0.5 N HCl solution (70 ml) , brine (50 ml) and water (50 ml) . The organic εolution waε dried over magneεium sulfate, and then

dried in vacuo. The product was purified by silica gel column chromatography (chloroform/cyclohexane = 1/1 v/v) .

Yield = 324 mg (69%) . iH-NMR (CDC1 ₃ ) δ 7.82-7.39 ( , 7H, naph), 6.98 (d, J = 3.6 Hz, IH, thiazol), 6.73 (d, J = 3.1 Hz, IH, thiazol), 4.07 (q, J = 7 Hz, 2H, CH ₂ NH) , 3.28 (t, J = 7 Hz, 2H, CH2). ¹³ C-NMR (CDCI3+CD3OD) δ 177 (C=S) , 161 (thiazol) , 137 (thiazol), 134.5 (naph), 133.6 (naph), 131.7 (naph), 128.5 (naph), 127.2 (naph), 126.8 (naph), 125.9 (naph), 125.5 (naph), 125.2 (naph), 123.6 (naph), 110.9 (thiazol), 45.8 (CH ₂ ), 31.7 (CH).

Example 106 N- (1-(4-pentenvl)-N ¹ -(2-thiazolvl)thiourea A mixture of 4-pentenol (3.04 g, 35.3 mmole), pyridine (2.79 g, 35.3 mmole) and 25 ml diethyl ether was cooled to -60°C. Trifluoromethanesulfonic anhydride (10 g, 35.4 mmol) was added dropwise at -60°C (5 min) . The reaction was heated slowly (30 min) to room temperature, and the salt formed was filtered off.

The filtrate was added dropwise to a mixture of 10 ml diethyl ether and 30 ml liquid ammonia kept at ca -30°C. The ammonia was evaporated while the remaining solution was allowed to reach room temperature. The ether solution was extracted with 10 ml 10 M aqueous sodium hydroxide. Distillation at atmosphere presεure gave 4- pentenylamine (2.35 g, 27.6 mmole).

0.85 g (10 mmole) of this amine was condensed with 2.1 g of the product of Example 103 using the method as described in Example 105. Crystallization from a mixture of n-hexane and toluene gave pure product.

iH-NMR (CDCI3) δ 1.85 ppm (m) , 2.20 ppm (m) , 3.7 ppm (m) ,

5.0-5.15 ppm (m) , 5.75-5.95 ppm (m) , 6.85 ppm (d) , 7.30 ppm

(d).

¹³ C-NMR (CDCI3) δ 177, 162, 137, 137, 116, 111, 45, 31, 28 ppm.

Example 107 N-(2- (3-trifluoromethvl)phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 106, using 1- trifluoromethyl-3-ethanolbenzene, the titled product resulted. iH-NMR (CDCI3) δ 3.0 (t, PhCH ₂ , 2H) , 4.0 (q, CH ₂ N, 2H) , 6.8

(d, thiazole, IH) , 7.2 (d, thiazole, IH) , 7.4-7.6 (mult, o, m and p, 4H) .

Example 10?

N-(cis-3-Hexenvl) )-N'-(2-thiazolvl)thiourea

In a manner analogous to Example 106, using 3- ciε-hexenol, the.titled product resulted. iH-NMR (CDCI3) δ 7.30 (d, J = 3.9 Hz, 1 H, thiazol), 6.83

(d, J = 3.8 Hz, IH, thiazole), 5.56 and 5.40 (m, 2H, H-C=C- H), 3.75 (q, 2H, CH ₂ NH) , 2.47 (q, 2H, CH ₂ ), 2.09 (p, 2H, CH ₂ ), 0.95 (t, J = 5.4 Hz, 3H, CH3) . ¹³ C-NMR (CDCI3) δ 177 (C=S) , 161 (thiazole), 137.5 (thiazole), 134.8 (C=C) , 124.6 (C=C) , 111.0 (thiazole), 45.4 (CH2NH) , 26.3 (CH2), 20.6 (CH ₂ ) , 14.1 (CH ₃ ).

Example 109

N-(2-f1-naphthy ) thvl)- ¹ -(2-thiazolvl)thiourea

In a manner analogous to Example 106, using (1- naphthyl)-2-ethanol, the titled product resulted. iH-NMR (CDCI3 + CD3OD) δ 8.24-7.40 (m, 7H, naph), 7.16 (d,

J = 3.7 Hz, IH, thiazole), 6.80 (d, J = 3.7 Hz, IH, thiazole), 4.10 (t, J = 7.5 Hz, 2H, CH2NH) , 3.49 (t, J = 7.5 Hz, 2H, CH ₂ ) .

Example 110

N-(2-f2-fluoro)- henethvl)-N--(2-thiazolvl)thiourea In a manner analogous to Example 106, using 1- fluoro-2-ethanolbenzene, the titled product reεulted. iH-NMR (CDCI3) δ 7.28-7.03 (m, 5H, thiazole, FPh), 6.81 (d, J = 3.8 Hz, IH, thiazole), 3.99 (q, J = 7.1 Hz, 2H, CH2NH) , 3.08 (t, J = 7 Hz, 2H, CH2).

¹³ C-NMR (CDCI3) δ 178 (C=S), 161 (thiazole), 137.4 (thiazole) , 131 (d, C-F coupling, FPh) , 128 (d, C-F coupling, FPh), 124 (FPh), 115.4 (FPh), 115 (FPh), 111 (thiazole), 45.3 (CH2), 28.1 (CH ) .

Example 111 N-(2-(2-trifluoromethyl)phenethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogouε for Example 106, using 1- trifluoromethyl-2-ethanolbenzene, the title product resulted. iH-NMR (CDCI3) δ 7.66 (d, IH, TEMPh) , 7.51 (m, 2H, TFMPh) ,

7.34 (m, IH, TFMPh), 7.26 (d, J = 3.6 Hz, IH, thiazole),

6.84 (d, J = 3.8 Hz, IH, thiazole), 3.99 (q, J = 6.3 Hz, 2H, CH2NH) , 3.23 (t, J = 7.6 Hz, 2H, CH2) .

¹³ C-NMR (CDCI3) δ 177.7 (C=S) , 161.5 (thiazole), 137.6

(thiazole), 136.9 (TFMPh), 131.8 (TFMPh), 131.6 (TFMPh), 129 (q, C-F coupling, CF3), 126.6 (TFMPh), 125.9 (d, TFMPh), 111.1 (thiazole), 46.3 (CH ₂ ), 31.4 (CH ₂ ) .

Example 112 N-N- (3-pentvnvl)-N ¹ -(2-thiazolvl)thiourea

The starting material, 3-pentynylamine, was synthesized from 3-pentyn-l-ol. 3-Pentvnvlamine

Trifluoromethanesulfonic anhydride (4.0 ml; 23.8 mmol) waε added to a solution of 3-pentyn-l-ol (2.0 g; 23.8 mmol) and pyridine (1.92 ml; 23.8 mmol) in diethyl ether (50 ml) at -45°C. The mixture was stirred for 15 min at the same temperature and filtered cold into diethyl ether (-10 ml) saturated with NH ₃ at -45°C with stirring. The precipitate was washed with cold diethyl ether. The reaction mixture was εtirred at RT for 3 h and evaporated to give yellow crystals (2.0 g, 36 %) as a salt of 3- pentynylamine and trifluoromethane sulfonic acid. iH-NMR (250 MHz, D2O) δ 3.12 (t, 2H, CH2~NH ⁺ 3), 2.55 (m,

2H, CH2-C≡C), 178 (t, 3H,CH ₃ -CsC) .

¹³ C-NMR (250 MHz, D ₂ 0) δ 126, 83, 77, 41, 20, 5.

The titled product was then prepared in a manner analogous to Example 106. iH-NMR (250 MHz, CDCI3) δ7.33 (d, IH, CH=CH) , 6.87 (d, IH,

CH=CH) , 3.86 (q, 2H, CH -NH) , 2.56 (tt, 2H, CH ₂ -C≡C) , 1.81

(t, 3H,CH ₃ -C≡C).

¹³ C-NMR (250 MHz , CDCI3 ) δ l78 , 162 , 138 , 111 , 45 , 19 , 4 . Mp: 118. 5-119 .5°C .

Example 113 3-(2-Phenethvl)-2-thioxo-l.2.3.4-tetrahvdroσuinazoline 2-Nitrobenzaldehyde (10.0 g, 66 mmol) and 2- phenylethylamine (8.3 ml, 66 mmol) was dissolved in acetonitrile (200 ml). pH was adjusted to 6.0 with acetic acid.

Sodium cyanoborohydride (4.15 g, 66 mol) was added in small portions. The solution was stirred 40 min. The solution was diluted with water (400 ml) and extracted with ether.

Acid-base partitioning [aq. HCl, NH4OH (aq.)] and evaporation gave an oil. The oil was suspended in water (200 ml) and iron dust (10 g, 180 mmol) was added. The mixture was heated to reflux and HCl (cone. aq. ) (10 ml) was slowly added. Reflux was continued for 40 minutes. The solution was cooled, basified with sodium hydroxide 40 % (aq.) to pH 14. The solution was stirred with toluene (700 ml) and filtered through a pad of celite.

Acid-base partitioning [(HCl (a.q. ) NH4OH (a.q.)] and evaporation afforded an oil. The oil was dissolved in acetonitrile (20 ml) and N,N-thiocarbonyldi- imidazole (0.7 g, 6.6 mmol) was added. The solution was stirred for 78 hours at ambient temperature, heated to 75°C for 40 minutes and evaporated. The residue was purified by flash-chromatography on silica gel by elution with ethyl acetate-cyclohexane (1:3) . The product crystallized spontaneously from the pure fractions forming long needles. iH-NMR (CDCI3) δ 3.0 (t, PhCH2, 2H) , 4.1 (t, PhC^CJI^N, 2H) , 4.4 (s, PhCH ₂ N, 2H) , 6.7-7.5 (mult., CgH ₅ , CgH ₄ , 9H) , 8.7 (Broad singlet NH, IH) .

Example 114 N- (2-Phenethyl)-N ¹ - \2-(3-methvl)-pvridvll thiourea

A εtirred solution of 2-phenethyl isothiocyanate

* •* (1.63 g., 10 mmol, 1.5 mL) and 2-amino-3-methylpyridine 5 (1.08 g, 10 mmol) in N-methylpyrrolidinone (20 mL) was heated to 100°C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and 10 concentrated. The solid obtained was purified by flaεh chromatography on εilica gel (2% ethyl acetate/dichloromethane) to provide 1.77 g of the titled product (65%) . This material was recrystallized from ethyl acetate/hexanes to provide 878 mg of the titled product as 15 a pale yellow crystalline solid: mp 82-84°C; IR (KBr, cm" ¹ ) 3430, 2945, 1594, 1555, 1454,

1268, 1243, 1161;

- ^• -H NMR (300 MHZ, DMSO- d ₆ ) δ11.62 (br S, IH) , 8.66 (s, IH) ,

7.90 (d*, J=4.1 Hz, IH) , 7.59 (d, J=7.2 Hz, IH) , 7.28-7.15 20 (m, 5H) , 6.96 (dd, J=7.4, 5.0 Hz, IH) , 3.84-3.78 ( , 2H) ,

2.89 (t, J=7.0 Hz, 2H) , 2.23 (ε, 3H) ;

MS (FD) m/e 271 (M+) ; UV (EtOH) 293nm (ε=17290), 265nm (ε=

14634), 244nm (ε=16338), 202nm (8=19784).

Anal. Calcd for C ₁₅ H ₁ 7N ₃ S: C, 66.39; H, 6.31; N, 15.48. 25 Found: C, 66.66; H, 6.32; N, 15.73.

Example 115 N- (2 - (2-thienvl)ethvl)-N ¹ -(2-thiazolyl)thiourea 6.4 g 2-(2-thienyl)ethanol (50 mmoles) was 30 dissolved in 50 ml diethyl ether together with 3.95 g pyridine (50 mmoles) .

The mixture was cooled to -30°C, and 5.7 g methanesulfonylchloride (50 mmoles) waε added dropwiεe under stirring. The reaction mixture was then heated and kept at reflux temperature for 30 minutes. The mixture was then cooled to room temperature and filtered. The filtrate was transferred to an autoclave together with 100 ml of a solution of ammonia in methanol (saturated at 0°C) . The autoclave was sealed and heated to 150°C for 17 hours. The solvent,was removed by evaporation in vacuo, and 100 ml 5 M sodium hydroxide in water was added. The mixture was extracted twice with 100 ml methylene chloride to give a solution of 2-(2-thienyl)ethylamine together with some secondary amine.

The pure primary amine was obtained by fractional crystallization from methanol of the saltε with oxalic acid, followed by addition of aqueouε sodium hydroxide and extraction with methylene chloride.

500 mg of the pure 2-(2-thienyl)ethylamine (3.93 mmole) was added to a solution of 800 mg thiocarbonyl- diimidazole (4.5 mmole) in 5 ml methylene chloride at 0°C. The mixture was stirred at 0°C for 15 minutes, and then 1 hour at 20°C. The solvent was removed in vacuo, and 5 ml dimethylformamide and 500 mg 2-aminothiazole was added. This mixture was allowed to react 17 hours at 110°C. After evaporation of solvent in vacuo 100 ml ethyl acetate was added, and the mixture waε heated to 50°C. The warm mixture waε washed twice with 20 ml 1 M HCl, and once with 20 ml H2O. Evaporation of solvent to a small volume gave crystals of the desired product. Recrystallization twice from ethyl acetate gave 340 mg of very pure product.

¹³ C-NMR (CDCI3 + DMSO-d ₆ ) δ 178, 162, 141, 137, 127, 125,

124, 111, 46, 29 PPM. iH-NMR (CDCI3 + DMSO-dε) δ 3.3 ppm (t) , 3.9 ppm (m) , 6.85 ppm (d) , 6.90 ppm (m) , 7.20 ppm (d) , 7.25 ppm (d) .

Example 116 N-(2-(2-fluoro-6-chloro)phenethvl)-N'-(2-thiazolvl)thiourea 2-Chloro-6-fluorσphenylacetonitrile (2.5 g, 14.7 mmol) was dissolved in 30 ml diethyl ether. Lithium aluminium hydride (1.5 g) was added in small portions over a period of 10 minutes. The mixture was then heated to reflux for 15 minutes. After cooling to room temperature, 1.5 ml water, 1.5 ml aqueous sodium hydroxide, and 4 ml water was added slowly. The ether solution containing the product 2-chloro-6-fluorophenethylamine was decanted off and the solvent was removed in vacuo.

The amine formed was condensed with the product of Example 103 using the method as described in Examples 104 and 105 to give 270 mg of the titled product after recrystallization from ethanol. iH-NMR (DMSO-d6) δ 3.1 ppm (t) , 3.85 ppm (m) , 7.1 ppm (d) ,

7.15-7.30 ppm (m) , 7.40 ppm (d) .

Example 117 N-(2-( -Methoxv)-phenethvl)-N ^■ -(2-thiazolyl)thiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with 3- methoxyphenethylamine to give the titled product.

iH-NMR (DMSO-dg) δ 2.9 (t, Ph, CH ₂ , 2H) , 3.75 (s, OCH3, 3H) , 3,9 (q, CH ₂ N, 2H) , 6.8 (mult, o and p, 4H) , 7.1 (d, thiazole, IH) , 7.2 (t, m, IH) , 7.4 (d, thiazole, IH) .

Example 118

N-(2-Phenethvl)-N--T2-(5-methvl)pvridvl1 thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-5-methylpyridine (1.08 g, 10 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 125°C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate/dichloromethane) to provide 2.01 g of the titled product (74%) . This material was recrystallized from ethyl acetate/hexanes to provide 1.72 g of titled product as a white crystalline solid: mp 153-154°C; IR (KBr,cm" ^l ) 3235, 2939, 1613, 1559, 1534, 1493, 1300, 1188; •4*1 NMR (300 MHZ, DMSO- dg) δ11.56 (br S, IH) , 10.42 (s, IH) ,

7.84 (d, J=1.3 Hz, IH), 7.52 (dd, J=8.5, 2.1 Hz, IH) , 7.31-

7.16 (m, 5H), 6.99 (d, J=8.5 Hz, IH) , 3.82-3.75 (m, 2H) , 2.87 (t, J=7.0 Hz, 2H) , 2.16 (s, 3H);

MS (FD) m/e 271 (M+) ;

UV (EtOH) 298nm (ε=14080), 268nm (ε=21638), 248nm (ε=

15905), 201nm (8=18504).

Anal. Calcd for C ₁₅ H ₁ 7N ₃ S: C, 66.39; H, 6.31; N, 15.48. Found: C, 66.33; H, 6.26; N, 15.33.

Examole 119 N-Methyl-N-(2-phenethvl)-N ¹ - (2-thiazolvl)thiourea In a manner analogous to Example 105, the _β * product of Example 103 was condensed with N-methyl- 5 phenethylamine, to give the titled product. ⁱ H-NMR(DMSO-dβ) δ2.9 (t,PhCH ₂ ,2H) , 3.2 (s,NCH ₃ ,3H) 4.0 (t, CH ₂ N,2H), 6.8 (d,thiazole,IH) , 7.2 (m, thiazole,IH) , 7.3 (mult. ,CgH5,5H)

10 Example 120

N-(2-lndanvl)-N'-(2'-thiazolvl)thiourea In a manner analogous to Example 105, the product of Example 103 was condenεed with 2- indanylamine, to give the titled product. 15 iH- MR (DMSO-d6) δ2.4 (q, CH , 2H) , 3.3 (q, CH , 2H) ,

4.8 (q, CHN, IH) , 7.0 (d, thiazole, IH) , 7.1-7.3 (mult., C H4, 4H) , 7.4 (d, thiazole, IH) .

Example 121

20 N- (2- (2-Azido)-Phenethvl)-N ¹ - (2-thiazolvl)thiourea

2-Aminophenethylalcohol (Aldrich) (0.8 g, 5.8 mmol) was disεolved in 15 ml H2O at 0°C. Trifluoroacetic acid (1.2 ml) was added. Sodium nitrite (0.41 g, 0.6 mmol) dissolved in cold water (2.0 ml) was added. The 25 solution was stirred at 0°C for 10 minutes.

Lithium azide (0.59 g, 12 mmol) in water (2.0 ml) was added slowly. The solution was brought up to ambient temperature. The solution was extracted with » diethyl ether (3 x 50 ml) , the organic phaεe waε waεhed

30 with 1 N HCl (aq.) (2 x 20 ml), dried with Na2Sθ4, filtered and evaporated.

The residue was dissolved in dichloromethane (20 ml) under a nitrogen atmosphere. The solution was cooled to -10°C and ethyldiisopropylamine (1.1 ml, 6.4 mmol) was added. Trifluoromethanesulfonic anhydride (0.87 ml,

5.17 mmol) waε added dropwise. The solution waε stirred at 0°for 20 minutes and then added to a solution of NH3

(g) in methanol (50 ml sat. at 0°C) under vigouros stirring. The solution was stirred for 40 minutes at ambient temperature. The solution was diluted with water (100 ml) and extracted with dichloromethane (2 x 50 ml). Acid-base partitioning [NH4OH (aq)-HCl (aq) [ and evaporation gave 2-azidophenethylamine.

In a manner analogous to Examples 104 and 105, the product of Example 103 was condensed with 2- azidophenethylamine, to give the titled product. iH-NMR (DMSO-d6) δ 2.9 (t, PhCH ₂ , 2H) , 3.8 (q, CH ₂ N,

2H) , 7.0-7.4 (m, Ph-o, m, p, thiazole, 6H) .

Example 122

N-(2-(3-Fluoro)Phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 105, the product of Example 103 was condensed with 3- fluorophenethylamine to give the titled product. iH-NMR (DMSO-d6) δ 2.9 (t, PI1CH2, 2H) , 3.8 (q, CH2N,

2H) , 7.0-7.4 (m, Ph-o,m,p, thiazole, 6H) .

Examole 123 N- (2-(Benzenesulfonamide-4-ethvl) )-N'- (2- thiazplyl)thipurea In a manner analogous to Example 105, the product of Example 103 was condensed with 4-(2- aminoethyl)benzeneεulfonamide to give the titled product. - ^J -H-NMRfDMSO-dε) δ 3.0(t), 3.8(m) , 7.1(d), 7.35(m),

7.45(d), 7.80(d). ¹³ C-NMR (DMSO-dg) δ 178, 162, 143, 142, 137, 129, 126,

112, 45, 34.

Example 124 N- (2- ( .4-Dimethoxv)phenethvl)-N'-(2-thiazolyl) hiourea In a manner analogouε to Example 105, the product of Example 103 was condensed with 3,4- dimethoxyphenethylamine to give the titled product. iH-NMR (DMSO- _d g-CDCl ₃ ) δ 2.95 (t) , 3.70 (t) , 3,85 (s) ,

3.90 (s-), 6.80 (ε), 6.90 (d) , 7.40 (d) .

Example 125

N-(Phenvlpropan-l-ol-2-vl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 105, the product of Example 103 was condensed with norephedrine to give the titled product. iH-NMR (DMSO- _d6 ) δ 0.95 (d) , 4.25 (m) , 4.95 (d) , 7.1-7.5

(m).

Exa ple 126

N-(2-.2-Pvridvl)ethvl)-W-(2-thiazolvl)thiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with 2-(2- aminoethyl)pyridine to give the titled product. iH-NMR (DMSO- _d g) δ 3.1 (t) , 4.0 (m) , 7.1 (d) , 7.2-7.4

(m), 7.7 ( ), 8.5 (d) , 9.8 (s) , 11.7 (s) .

Example 127 N-(2-(2.5-Dimethoxv)Phenethvl)-N'-(2-thiazolvl) hiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with 2,6- dimethoxyphenethylamine to give the titled product. 1H-NMR (CDCI3) δ 3.00 (t), 3.73 (s) , 3.77 (s) , 3.97 (m) , 6.70-6.85 (m) , 7.24 (d) , 10.80 (s) . ⁱ³ C-NMR (CDC1 ₃ ) δ 177, 162, 153, 152, 138, 128, 117,

112, 111, 111, 56, 56, 46, 30.

Example 128 N-(i-( -phenyl)propanyl)-N'-(2-thiasplyl)thipvrea

In a manner analogous to Example 105, the product of Example 103 was condensed with l-amino-2- phenylpropane to give the titled product. iH-NMR .(DMSO-d6) δ 1.20 (d) , 3.13 (q) , 3.70 (t) , 7.09 (d), 7.20-7.50 (m) .

Broad peaks δ 8.14, 9.33, 9.75 and 10.57.

Example 129 N- (2-(3-Indol)ethyl)-N'- (2-thiazolyl)thiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with tryptamine to give the titled product.

1H-NMR (CDC1 ₃ + CD3OD) δ 7.68-7.06 (m, 6H, indole, thiazole), 6.84 (d, J = 3.7 Hz, IH, thiazole), 4.02 (t, J = 7 Hz, 2H, CH ₂ NH) , 3.16 (t, J = 6.9 Hz, 2H, CEtø). ¹³ C-NMR (CDCI3 + CD3OD) δ 177 (thiazole) , 161 (thiazole), 137 (thiazole), 136 (indole), 127 (indole), 123 (indole), 121 (indole), 118 (indole), 117 (indole), 111 (thiazole), 110 (indole), 109 (indole), 46 (CH ₂ ), 26

⁽ CH ₂ ).

Example 130

N-(2-(2-hvdroxvethoxv)ethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 105, the product of Example 103 waε condenεed with 2-(2- aminoethoxy) ethanol to give the titled product. iH-NMR (CDCI3) δ 7.34 (d, J = 3.4 Hz, IH, thiazole),

6.84 (d, J = 3.4 Hz, IH, thiazole), 3.96 (t, J = 4.9 Hz, 2H, CH ₂ NH) , 3.76 (m. 4H, CH ₂ ), 3.66 (t, J = 4.3 Hz, 2H, CH ₂ ).

¹³ C-NMR (CDCI3) δ 177.4 (C=S) , 161.8 (thiazole), 137.5 (thiazole), 111.2 (thiazole), 72.1, 68.4, 61.5, 44.9.

Example 131 N- (2-(5-Nitropvrid-2-vl)aminoethvl)-N'-(2- thiazolvl)thiourea In a manner analogouε to Example 105, the product of Example 103 was condensed with 2-(2-

aminoethylamino)-5-nitropyridine to give the titled product. iH-NMR (CDCI3 + CD3OD) δ 8.95 (d, IH, pyr) , 8.12 (dd,

IH, pyr), 7.26 (d, J = 3.8 Hz, IH, thiazole), 6.86 (d, J = 3.8 Hz, IH, thiazole), 6.52 (d, IH, pyr), 3.99 (t, 2H, CH ₂ NH) , 3.78 (t, 2H, CH2) -

Example 132

N-(2-fl-Methvlpvrrolid-2-vl)ethvl)-N--(2- thiazolvl)thiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with 2-(2- aminoethyl)-1-methylpyrrolidine to give the titled product. iH-NMR (CDCI3) δ 7.32 (d, J = 4 Hz, IH, thiazole), 6.83 (d, J = 3.6 Hz, IH, thiazole), 3.78 (q, 2H, CH ₂ NH) , 3.08 (m, IH, NCH(CH ₂ )2)r 2.34 (s, 3H, N-CH3), 2.16 (m, 2H, NCH2), 2.01 (m, 2H, CH2), 1.7 (m, 4H, pyr). ¹³ C-NMR (CDCI3) δ 177 (C=S), 161 (thiazole), 137.5 (thiazole), 111.1 (thiazole), 64.1 (pyr), 57.1 (pyr), 43.1 (CH ₂ ), 40.6 (CH ₂ ), 32.1 (pyr), 30.3 (pyr), 22.2

(pyr) .

Example 133 N-(2-(2.4-Dichloro)phenethvl)-N*-(2-thiazolvl)thiourea

In a manner analogous to Example 105, the product of Example 103 was condensed with 2,4-dichloro- phenethylamine to give the titled product. iH-NMR (CDCI3 + CD3OD) δ 7.40 (d, IH, thiazole), 7.41 (s, IH, DClPh) , 7.24 (m, 2H, DClPh) , 6.87 (d, IH, thiazole), 3.95 (t, 2H, CH2NH) , 3.14 (t, 2H, CH ₂ ) .

Examole 134 N-(1.1-(2-p-hvdroχyphenvl)methoxvcarbonvlethvl)-N' -(2- thiazolv thiourea In a manner analogous to Example 105, the product of Example 103 was condensed with tyrosine methylester to give the titled product. iH-NMR (CDCI3) δ 7.25 (d, J = 3.3 Hz, IH, thiazole),

7.02 (d, J = 8.2 Hz, 2H, Tyr), 6.82 (d, J = 3.4 Hz, IH, thiazole), 6.74 (d, J = 8.2 Hz, 2H, Tyr), 5.29 (t, IH, CH) , 3.73 (s, 3H, CH3) , 3.19 (d, 2H, CH ₂ ).

¹³ C-NMR- (CDCI3 ) δ 177 .4 (C=S ) , 171.5 (C0 ₂ Me) , 161.2 (thiazole) , 155 . 4 (Tyr) , 136 . 9 (thiazole) , 130. 0 (Tyr) , 126.2 (Tyr) , 115 .0 (Tyr) , 111.1 (thiazole) , 59 . 0 (CH) , 51. 9 (CH ₃ ) , 36. 4 (CH2 ) .

Example 135 1-(2-Thiazolvl)-4-(p-hvdroxvbenzvl)-2-thiohvdantoin The titled product was obtained as a by product during the preparation of the product described in Example 134. iH-NMR (CDCI3 + CD30D) δ 7.78 (d, IH, thiazole), 7.50

(d, IH, thiazole), 7.07 (d, 2H, Tyr), 6.78 (d, 2H, Tyr), 4.50 (t, IH, CH) , 3.15 (m, 2H, CH ₂ ).

Example 136

N-(2-tranf.-phenvlcvclopropvl)-N'-2-(thiazolvl)thiourea In a manner analogous to Example 105 the product of Example 103 waε condensed with trans-2- phenylcyclopropylamine to give the titled product.

iH-NMR ^' (CDCI3 + CD3OD) δ 7.32 (d, J = 3 . 8 Hz , IH, thiazole), 7.23 ( , 5H, Ph) , 3.38 (m, IH, CHNH) , 2.27 (m, IH, CH) , 1.91 (m, 2H, CH ₂ ) .

¹³ C-NMR (CDCI3 ÷ CD3OD) δ 179.2 (C=S) , 161.7 (thiazole), 139.8 (Ph), 137.3 (thiazole), 128.2 (Ph) , 126.5 (Ph) ,

126.0 (Ph), 111.2 (thiazole), 36.1 (CH) , 35.1 (CH) , 16.1 (CH ₂ ) .

Example 137 N-(4-Methvl-3-pentenvl)-N ¹ -(2-thiazolvl)thiourea

The starting material, 4-methy1-3-pentenyl- amine, was prepared from 5-bromo-2-methyl-2-pentene.

4-Methvl- -pentenvlamine LiN3 (1 g, 20 mmol) was added to a solution of

5-bromo-2-methyl-2-pentene (1.63 g, 10 mmol) in 5 ml DMF. The solution was stirred at room temperature for two days. The reaction mixture was poured into a mixture of hexanes and sat. NH4Cl-solution. The organic phase was washed with sat. NH4Cl-solution, brine and water.

After drying, the solvent was removed and the crude azide was reacted with LiAlH4 (380 mg, 10 mmol) in ether at 0°C. After 2 h the reaction was quenched by the addition of 380 μl H2O, 380 μl 15 % NaOH-solution and 1.14 ml H2O, respectively. After filtration the solvent was evaporated and the residue was distilled in vacuo to give 0.42 g of the title amine.

B.p. 50°C/40 mm. iH-NMR (CDCI3) δ 1.5 (broad s, 2H) , 1.60 (d, 3H) , 1.70 (d, 3H), 2.68 (q, 2H) , 5.05-5.15 (m, IH) .

¹³ C-NMR (CDC1 ₃ ) δ 17 .70 , 18 .39 , 25. 66 , 32.22 , 42 . 03 , 121 . 64 , 133 . 50 .

In a manner analogous to Example 105, the product of Example 103 was condensed with 4-methyl-3- pentenylamine to give the titled product. Mp: 87.5-88.5°C. Analyses: Calculated: C 49.76, H 6.26, N 17.41. Found: C

49.35, H 6.20, N 17.15. ⁱ H-NMR (CDCI3) δ 1.65 (s, 3H) , 1.75 (s, 3H) , 2.40 (q,

2H), 3.73 (q, 2H) , 5.1-5.25 (m, IH) , 6.83 (d, IH) , 7.29

(d, IH).

¹³ C-NMR (CDCI3) δ 17.93, 25.88, 27.31, 45.54, 111.22,

120.40, 135.10, 137.51, 161.94, 177.21.

Example 138 N-(yrfflg-3-hexenyl)-N'-(2-thiazplyl)thipurea

The starting material, i£sn£-3-hexenylamine, was prepared from trans-3-hexen-l-ol.

Trans- -hexenyla ine

To a stirred solution of trans-3-hexen-1-ol (5.0 g, 0.050 mol), Et ₃ N (7.65 ml, 0.055 mol) and CH ₂ C1 ₂ (70 ml) at -30°C was added 4.33 ml (0.055 mol) methanesulfonyl chloride. The solution was stirred at about -20°C for 2 h. After addition of CH2CI2, the organic phase was waεhed with sat. aHCθ3 solution, sat. NH4Cl-solution and water, dried (Na2Sθ4) and concentrated in vacuo. This gave a crude mesylate which was diεεolved in DMF (30 ml) and LiN3 (5 g, 100 mmol)

was added. The reaction mixture was stirred overnight and poured into a mixture of ether and brine. The ether phase waε waεhed with brine (x 2) and dried (Na2Sθ4) .

The ether solution was concentrated to about 100 ml and cooled to 0°C, whereafter 1.9 g (50 mmol) of LiAlH4 was added. After 1 h the reaction was quenched with 1.9 ml H2O, 1.9 ml 15 % NaOH-solution and 5.7 ml H2O, respectively. After filtration, the solvent was evaporated and the residue was distilled in vacuo to give 2.35 g of the titled amine. B.p. 34-°C/20 mm iH-NMR (CDCI3) δ 0.92-1.05 (m, 3H) , 1.75 (broad s, 2H) ,

1.95-2.20 (m, 4H) , 2.68-2.75 (m, 2H) , 5.27-5.63 (m, 2H) . ¹³ C-NMR (CDCI3) δ 13.80, 25.55, 36.62, 41.56, 126.10, 134.48.

In a manner analogouε to Example 105, the product of Example 103 was condensed with trans-3- hexenylamine to give the titled product. Mp: 116.0-117.0°C.

Analyses: Calculated: C 49.76, H 6.26, N 17.41. Found: C

49.6, H 6.3, N 17.4. iH-NMR (CDCI3) δ 0.98 (t, 3H) , 2.0-2.1 (m, 2H) , 2.41 (q,

2H), 3.76 (q, 2H) , 5.4-5.7 (m, 2H) , 6.83 (d, IH) , 7.29 (d, IH), 10.8 (broad s, IH) , 11.35 (broad s, IH) .

¹³ C-NMR- (CDCI3) δ 13.72, 25.65, 45.42, 111.25, 124.97,

135.56, 137.50, 161.95, 177.14.

Exa ple 139

N-r2- (Cvclo-2-penten-l-vl)ethvll-N'- (2- thiazolvl)thiourea The starting material 2-(cyclo-2-penten-l- yl)ethylamine was prepared from 2-cyclopenten-l-yl acetic acid.

2-(Cvr.ln- -penten-l-vl)ethylamine

2-Cyclopenten-l-ylacetic acid (5 ml, 0.042 mol) was disεolved in ether (100 ml). LiAlH (2.4 g,

0.063 mol) was added in portions. After the addition, the reaction mixture was stirred for 2 h at room temperature. The reaction mixture was quenched with 2.4 g H2O, 2.4 g 15 % NaOH-solution and 7.2 ml H2O, respectively. Filtration and evaporation of the solvent gave 4.45 g of crude 2-(cyclo-2-penten-l-yl)ethanol. This alcohol was transformed to the title amine by a procedure analogous to Example 138. iH-NMR (CDCI3) δ 1.4-1.8 (m, 4H) , 2.0-2.15 (m, IH) , 2.2- 2.4 (m, 3H) , 2.6-2.8 (m, 3H) , 5.6-5.8 (m, 2H) .

¹³ C-NMR (CDCI3) δ 29.68, 31.78, 40.00, 40.64, 42.97,

130.29, 134.61.

In a manner analogouε to Example 105, the product of Example 103 waε condensed with 2-(cyclo-2- penten-1-yl)ethylamine to give the titled product.

Mp: 139.0-140.0°C.

Analyses: Calculated: C 52.14, H 5.97, N 16.58. Found: C

52.20, H 6.05, N 16.35.

iH-NMR (CDCI3) δ 1.42-1.58 (m, IH) , 1.62-1.92 (m, 2H) , 2.06-2.45 ( , 3H) , 2.72-2.86 ( , IH) , 3.71-3.84 (m, 2H) , 5.70-5.80 (m, 2H) , 6.85 (d, IH) , 7.32 (d, IH) , 10.9 (broad s, IH) , 10.95 (broad s, IH) . ¹³ C-NMR (CDCI3) δ 29.71, 32.01, 34.77, 43.23, 44.31,

111.15, ^" 131.19, 134.13, 137.66, 161.99, 177.28.

Example 140

N-(2-(trans-3-pentenvl) )-N--(2-thiazolvl)thiourea The starting material trans-3-penten-l-ol waε prepared by reduction of 3-pentyn-l-ol with lithium aluminium hydride in refluxing tetrahydrofuran and the titled product waε then prepared in a manner analogous to Examples 106 and 112. iH-NMR (250 MHz, CDCI3) δ 7.28 (d, IH, CH=CH) , 6.83 (d,

IH, CH=CH) , 5.66-5.38 (m, 2H, trans-CH=CH) , 3.67 (q, 2H, CH ₂ -NH), 2.37 (q, 2H, CH -CH=CH) , 1.72 (dd, 3H, CH=CH- CH3).

¹³ C-NMR (250 MHz, CDCI3 ) δ 177 , 162 , 138 , 129 , 127 , 111, 46, 32 , 18.

Mp: 129-129 .5°C.

Anal. Calcd. for C9H13N3S2: C, 47.5; H, 5.7; N, 18.5.

Found: C, 47.9; H, 5.8; N, 17.8.

Example 141

N-f2-fci--.- -pentenyl) )-N ¹ -(2-thiazolvl)thiourea The starting material cis-3-penten-1-ol was prepared by reduction of 3-pentyn-l-ol with hydrogen in acetone at about 5 psi for 20 minutes using palladium on calcium carbonate as a catalyst (Lindlar catalyst) , and

the titled product was then prepared in a manner analogous to Examples 106 and 112. iH-NMR (250 MHZ , CDCI3 ) δ 7 .30 (d, IH, CH=CH) , 6 . 83 (d,

IH, CH=CH) , 5 .73 -5 .34 ( , 2H, cis-CH=CH) , 3 .76 (q, 2H,

CH ₂ -NH) , 2 . 48 (q, 2H, CH=CH-CH ₂ ) . 1. 66 (d, 3H, CH=CH-

CH ₃ ) . ⁱ³ C-NMR (250 MHz, CDCI3) δ 177, 162, 138, 127, 126, 111,

45, 26.

Mp: 76.5°C.

Example 142 N-(2-(2-Methvl)-phenethvl)-N ¹ -(2-thiazolvl)thiourea

The starting material 1-methylphenethanol was prepared by reduction of o-tolylacetic acid with lithium aluminium hydride in refluxing tetrahydrofuran and the titled product was then prepared analogous to Examples 106 and 112. Mp: 143-144°C.

Example 143

N- (2-(3.4.5-trimethoxv)phenethvl)-N'- (2- thiagply )thipurea The starting material 2- (3,4,5-trimethoxy)- phenethyla ine was prepared by reduction of 3,4,5- tri ethoxyphenylacetonitrile with cobalt chloride and sodium borohydride, according to the general method described by L.S. Heinzman in J. Am. Chem. Soc. 104, p.

6801 (1982).

3,4,5-Trimethoxybenzonitrile (965 mg, 5 mmole) and cobalt chloride (2,37 g, 10 mmole) were dissolved in methanol (70 ml) . To the solution was added sodium

borohydride (1.89 g, 50 mmole) . After 3 hours, the reaction mixture was filtered through celite, and concentrated to small volume. It was then taken up in chloroform and extracted with IN HCl (100 ml) . The organic phase was discarded. The aqueous solution was basified with aqueouε ammonia, and extracted with chloroform. The organic phase was dried over magnesium sulfate, and dried in vacuo to yield 2-(3,4,5- trimethoxy)phenethylamine (427 mg) . iH-NMR (CDCI3) δ 6.58 (S, 2H, TMPh), 3.85 (m, 8H, 2 x MeO, CH2), 3.82 (s, 3H, OMe) , 3.80 (m, 2H, CH2) .

The titled product waε then prepared analogouε to Example 105. 1H-NMR (CDCI3) δ 7.26 (d, IH, thiazole), 6.85 (d, IH, thiazole), 6.64 (ε, 2H, TMPh), 4.84 (d, J = 5.7 Hz, 2H,

CH2NH),"3.86 (m, 11H, CH2, MeO).

1 ³ C-NMR (CDCI3) δ 177 (C=S), 161 (thiazole), 153 (TMPh),

138 (TMPh) , 137 (thiazole) , 132 (TMPh) , 111 (thiazole) , 104.8 (TMPh), 6Ϊ (MeO), 56.1 (MeO), 53 (CH ₂ ), 50 (CH ₂ ) .

Example 144 N- (2- (2 .4-Difluoro)phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 143, using 2,4-difluorophenylacetonitrile, the titled product resulted. iH-NMR (CDCI3) δ 7.26 (m, IH, DFPh) , 7.20 (d, IH, thiazole), 6.80 (d, IH, thiazole), 6.75 (m, 2H, DFPh), 3.85 (q, 2H, CH2 H) , 3.04 (t, 2H, CH ₂ ) .

E arnple 145

N- (2- (2 . -Difluoro)phenethyl)-N ¹ - (2-thiazolyl)thiourea In a manner analogous to Example 143, using 2,6-difluorophenylacetonitrile, the titled product resulted.

1H-NMR (CDCI3) δ 7.23 (d, J = 3.8 Hz, IH, thiazole),

7.26-7.12 (m, IH, DFPh), 6.86 (m, 2H, DFPh), 6.81 (d, J = 3.6 Hz, IH, thiazole), 3.96 (q, 2H, CH2NH) , 3.11 (t, J = 7 Hz, CH ) . 1 ³ C-NMR (CDCI3) δ 177 (C=S) , 164 and 159 (dd, C-F coupling, DFPh) , 162 (thiazole) , 137 (thiazole) , 128 (m, C-F coupling, DFPh), 111 (thiazole), 110.8 (d, C-F coupling, DFPh), 44.5 (CH2). 21.6 (CH2) .

Example 146

N-(2-(3, -M thylenedipxy)phenethyl)-N'-(2- thiasply )thipvrea In a manner analogous to Example 143, using 3,4-methylenedioxyphenylacetonitrile, the titled product resulted.

1H-NMR (CDCI3) δ 7.24 (d, IH, thiazole), 6.80 (m, 3H, Ph, thiazole), 6.74 (s, IH, Ph) , 5.93 (ε, 2H, OCH2O) , 3.94 (q, 2H, CH ₂ NH) , 2.93 (t, 2H, CH ₂ ). l ³ C-NMR (CDCI3) δ 177.3 (C=S) , 161.6 (thiazole), 148 (Ph), 146 (Ph), 137.4 (thiazole), 132.1 (Ph) , 111.1

(thiazole), 109.2 (Ph) , 108.2 (Ph) , 100.7 (OCH ₂ 0) , 47.0 (CH ), 34.4 (CH ₂ ).

Example 147

N- (2-(4-Tri luoromethyl)phenethvl)-N ^■ -(2- thiazolvl)thiourea In a manner analogous to Example 143, using 4-trifluoromethylphenylacetonitrile, the titled product resulted. iH-NMR (CDC1 ₃ + CD3OD) δ 7.57 (d, J = 8.3 Hz, 2H,

TFMPh), 7.40 (d, J = 8.3 Hz, 2H, TFMPh), 7.19 (d, J = 3.7 Hz, IH, thiazole), 6.83 (d, J = 3.7 Hz, IH, thiazole), 3.95 (t, J = 7.2 Hz, 2H, CH ₂ NH) , 3.08 (t, 2H,

CH ₂ ).

Example 148 ■RS)-N-(2-Methvl-2-(2,6-difluoro)phenethyl)-N ¹ -(2- thiazolyl)thiourea

2,6-Difluorobenzyl cyanide (1.24 ml, 10 mmole) was reacted with sodium hydride (360 mg, 12 mmole) in THF (5 ml) for 2 hour. Then iodomethane was added to the reaction mixture. After 30 min, the reaction mixture was worked up and the product was isolated by silica gel column chromatography. Yield 985 mg (59 %) .

1H-NMR (CDCI3) δ (Mixture of two stereoiso ers) 7.28 (m,

IH, DFPh), 6.98 (m, 2H, DFPh), 4.26 (m, IH, CH) , 1.69 and 1.66 (2 x s, 3H, CH3).

In a manner analogous to Example 143, using 2- methyl-2-(2,6-difluoro)phenethylamine, the titled product resulted.

1H-NMR (CDCI3) δ R and S stereomixture) , 7.12 (m, 2H, DFPh, thiazole), 6.85 (t, 2H, DFPh), 6.77, 6.76, 6.75, 6.74 (2d, J = 3.6 Hz, IH, thiazole), 4.11 (m, IH, CH) , 4.05-3.65 (m, 2H, CH ₂ ), 1.45, 1.42, (2ε, 3H, CH ₃ ).

Example 149 N-(2- (2-Bromo)-phenethvl)-N'- (2-thiazolvl)thiourea In a manner analogous to Example 143, using 2-bromophenylacetonitrile, the titled product resulted. 1H-NMR (DMSO-dg) δ 2.9 (t, PhCH ₂ , 2H) , 3.05 (t, PhCH ₂ , 2H) , 3.8 (q, CH ₂ N, 2H) , 7.1 (d, thiazole, IH) , 7.15-7.6 (mult, o, m, p, thiazole, 5H) .

Example 15Q N-(2-(l-Phenvl-l-cvclopropane)ethvl)-N ^l -(2- thiazolvl)thiourea In a manner analogous to Example 116, using 1- phenyl-1-cyclopropanecarbonitrile, the titled product resulted. 1H-NMR (CDCI3) δ 1.0 (d), 3.8 (d) , 6.9 (d) , 7.2 - 7.4

(m) , 7.9, 9.5 (NH) .

Example 151 N-(2- (2,6-Dimethoxv)phenethvl)-N'-(2-thiazolvl)thiourea The starting material 2,6-dimethoxy- phenethylamine was prepared from 2,6-dimethoxy- benzaldehyde. Reaction with nitromethane according to the procedure described in Vogel, Textbook of Practical Organic Chemistry, p. 176 (Longman 1978, 4th Ed.) yielded 2,6-dimethoxy-β-nitrostyrene. This comound (1.1

g, 5.3 mmole) was dissolved in diethyl ether/tetrahydrofuran (2:1, 200 ml) and lithium aluminium hydride (0.5 g, 13 mmol) was added in small portions. The mixture was refluxed for 120 minutes and then treated with 0.6 ml H2O, 0.6 ml 15 % NaOH (aq) and 1.8 ml H2O. The mixture was filtered and purified by acid-base partitioning (NH4OH (aq) HCl dil. (aq) ) and evaporated. The crude product 2,6- dimethoxyphenethylamine was pure enough to be used directly in the following reaction where it was condensed with the product of Example 103, in a manner analogous to Example 105, to give the titled product. iH-NMR (DMSO-dg) δ 2.9 (t, PI1CH2, 2H) , 3,7 (q, CH2N, 2H) , 3.8 (s, OCH3, 6H), 6.7 (d, o, 2H) , 7.1 (d, thiazole, IH) , 7.2 (t, p, IH) , 7.3 (d, thiazole, IH) ) .

Example 152

N-(2-( .5-Dimethoxv)Phenethvl)-N'-(thiazolvl)thiourea In a manner analogous to Example 151 the product of Example 103 was condensed with 3,5- dimethoxyphenethylamine, obtained from 3,5- dimethoxybenzaldehyde, to result in the titled product. 1H-NMR (DMSO-dg) δ 2.8 (t, PI1CH2, 2H) , 3.65 (s, OCH3, 6H) , 3.7 (q, CH2N, 2H) , 6.3 (t, p, IH) , 6.4 (t, o, 2H) , 7.1 (d, thiazole, IH) , 7.3 (d, thiazole, IH) .

Example 153 -(2-( .5-Dichloro)phenethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 3,5-

dichlorophenethylamine, obtained from 3,5- dichlorobenzaldehyde. iH-NMR (DMSO-dg) δ 2.9 (t, PhCH ₂ , 2H) , 3.8 (q, CH ₂ N,

2H) , 7.1 (d, thiazole, IH) , 7.3 (mult, o and p, 3H) , 7.4 (d, thiazole, IH) .

Example 154

N-(2-(2.5-Dichloro-6-hvdroxv)phenethvl)-N'- (2- thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2,5-dichloro-

6-hydroxyphenethylamine, obtained from 2,5-dichloro-6- hydroxybenzaldehyde. iH-NMR (CDCI3) δ 3.0 (t, PhCH2, 2H) , 3.9 (q, CH ₂ N, 2H) , 6.9 (d, o, IH) , 7.1 (d, thiazole, IH) , 7.2 (d, p, IH) ,

7.3 (d, thiazole, IH) .

Example 155

N-(2,3.6-Trichloro)phenethvl)-N ¹ -(2-thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103, waε condenεed with 2,3,6- trichlorophenethylamine, obtained from 2,3,6- trichlorobenzaldehyde. iH-NMR (DMSO-dg) δ 3.3 (t, PhCH ₂ , 2H) , 3.4 (q, CH2N, 2H), 7.1 (d, thiazole, IH) , 7.4 (d, thiazole, IH) , 7.5- 7.5 (mult., m and p, 2H) .

F.yample 156 N-(2-(2r3.4-Trifluoro)phenethvl)-N ^l -(2- thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 waε condensed with 2,3,4- trifluorophenethylamine, obtained from 2,3,4- trifluorobenzaldehyde, to result in the titled product. iH-NMR (CDC1 ₃ ) δ 3.0 (t, PhCH , 2H) , 4.0 (q, CH N, 2H) ,

6.8 (d, thiazole, 2H) , 6.85-7.0 (mult., m and o, 2H) , 7.2 (d, thiazole, IH) .

Example 157

N-(2- (2.3.5-Trichloro)phenethvl)-N'-(2- thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2,3,5- trichlorophenethylamine, obtained from 2,3,5- trichlorobenzaldehyde. 1H-NMR (DMSO-dg) δ 3.05 (t, PI1CH2, 2H) , 3.9 (q, CH2N, 2H), 7.1 (d, thiazole, IH) , 7.4 (d, thiazole, IH) , 7.5 (d, o, IH), 7.7 (d, p, IH) .

Example 158

N-f2- (2.4-Dimethoxv)phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2,4-dimethoxy- phenethylamine, obtained from 2,4-dimethoxybenzaldehyde.

1H-NMR (CDCI3 + CD3OD) δ 7.23 (d, J = 3.6 Hz, IH, thiazole), 7.10 (d, J = 7.8 Hz, IH, DMPh) , 6.81 (d, 3.6 Hz, IH, thiazole), 6.44 (s, IH, DMPh), 6.42 (d, IH, DMPh), 3.87 (t, 2H, CH2NH) , 3.80 (s, 3H, OMe) , 3.79 (s, 3H, OMe), 2.94 (t, 2H, CH ₂ ) .

1 ³ C-NMR (CDCI3 + CD3OD) δ 177.3 (C=S) , 161.6 (thiazole), 159.7 (DMPh), 158.4 (DMPh), 137.5 (thiazole), 130.9 (DMPh) , ^' 119.1 (DMPh), 110.9 (thiazole), 103.8 (DMPh), 99.3 (DMPh), 55.3 (OMe), 55.1 (OMe), 45.5 (CH ₂ ) , 28.7 (CH ₂ ).

Exam le 159 N-(2- (2. -Dimethoxv)phenethvl)- '-(2-thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2,3-dimethoxy- phenethylamine, obtained from 2,3-dimethoxybenzaldehyde. iH-NMR (CDCI3) δ 7.23 (d, J = 3.7 Hz, IH, thiazole),

7.02-6.83 (m, 3H, DMPh), 6.79 (d, J = 3.6 Hz, IH, thiazole), 3.99 (q, J = 8.9 Hz, 2H, CH ₂ NH) , 3.8 (s, 3H, OMe), 3.86 (s, 3H, OMe), 3.05 (t, 2H, CH ₂ ) .

1 ³ C-NMR (CDCI3) δ 177.3 (C=S) , 161.6 (thiazole), 152.6 (DMPh), 147.3 (DMPh), 137.3 (thiazole), 132 (DMPh), 123.7 (DMPh), 122.2 (DMPh), 110.9 (thiazole), 110.8 (DMPh), 60.6 (OMe), 55.5 (OMe), 45.8 (CH ₂ ), 28.9 (CH ₂ ).

Example 160 N-(2-(2.3.5.6-Tetrafluoro) henethvl)-N'- (2- thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103, waε condenεed with 2,3,5,6-

tetrafluorophenethylamine, obtained from 2,3,5,6- tetrafluorobenzaldehyde.

1H-NMR (CDCI3 + CD3OD) δ 7.24 (d, J = 3 Hz, IH, thiazole), 6.98 (m, H-F coupling, IH, TFPh), 6.83 (d, J = 3 Hz, IH, thiazole), 3.99 (t, J = 6.8 Hz, 2H, CH ₂ NH) ,

3.18 (t, J = 6.9 Hz, 2H, CH ₂ ) . ¹³ C-NM (CDCI ₃ ) δ l78.2(C=S), 161.5(thiazole) , 147.6(m,TFPh) , 143.6( ,TFPh) , 137.3 (thiazole) , 117.6(t,TFPh), 111.1(thiazole) , 104.3 (t,TFPh) , 53.3 (CH ₂ ), 43.7 (CH ₂ ).

Example 161 N-(2-(2-Methoxv-5-bromo)phenethvl)-N ¹ -(2- thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2-methoxy-5- bromophenethylamine, obtained from 2-methoxy-5- bromobenzaldehyde. 1H-NMR (CDCI3) δ 7.34 (m, 3H, MBPh and thiazole), 6.81 (d, J = 3.6 Hz, IH, thiazole), 6.72 (d, J = 8.4 Hz, IH, MBPh), 3.95 (q, 2H, CH2NH) , 3.79 (s, 3H, OMe), 2.98 (t, J = 6.8 Hz, 2H, CH2) .

Example 162 N-(2-(2-Ethoxv)Phenethvl)-N ¹ -(2-thiazolvl) hiourea

In a manner analogouε to Example 151, the product of Example 103, was condenεed with 2- ethoxyphenethylamine, obtained from 2-ethoxy- benzaldehyde.

1H-NMR (250 MHz, CDCI3) δ 7.37-7.16 (m, 2H, arom. ) , 7.22

(d, IH, CH=CH) , 6.91-6.78 (m, 2H, arom), 6.78 (d, IH, CH=CH), 4.07-3.93 (2xq, 2x2H, CH ₂ -NH, CH2-O) , 3.04 (t, 2H, Ph-CH ₂ ), 1.42 (t, 3H, OCH2CH3) .

¹³ C-NMR (250 MHz , CDCI3 ) δ 178 , 162 , 157 , 138 , 131 , 128 , 127 , 120 , 111, 111 , 63 , 46 , 30 , 15 . Mp: 140°C .

Anal. Calcd. for C14H 7N3OS2: C, 54.6; H, 5.5; N, 13.7. Found: C, 54.4; H, 5.6; N, 13.3:

Example 163

N-(2-(2. -Dichloro)Phenethvl)-N'-(2-thiazolvl)thiourea In a manner analogous to Example 151, the product of Example 103 was condensed with 2,3-dichloro- phenethylamine, obtained from 2,3-dichlorobenzaldehyde. iH-NMR (250 MHz, DMSO) δ 7.55 (d, IH, CH=CH) , 7.42-7.32 (m, 3H, arom), 7.12 (d, IH, CH=CH) , 3.86 (q, 2H, CH ₂ - NH) , 3.12 (t, 2H, Ph-CH ).

¹³ C-NMR (250 MHz, DMSO) δ 178, 162, 138, 130, 129, 128, 112, 44, 33.

Example 164 N- \2-(4-phlprpphenyl)ethyl1-N ¹ - \2- { ,5-dimethyl)t_.iazp.--y11

A solution of 1-[ (2-[4,5-dimethyl]thiazolyl) thiocarbamoyl] imidazole (10 mmol) and 2- (4- chlorophenyl)ethylamine (1.55 g, 10 mmol) in N,N- dimethy1formamide (30 mL) was stirred at 90°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer

was concentrated and the residue recrystallized from ethyl acetate to provide 2.44 g (75%) of the titled product. IR (KBr, cm ^"1 ) 3170, 3024, 1550, 1510, 1260, 1212, 708; iH NMR (300 MHz, DMSO-dg) δ 11.45 (br s, IH) , 9.8 (br s, IH), 7.35 (d, J=8 Hz, 2H) , 7.3 (d, J=8 Hz, 2H) , 3.8 (m, 2H), 2.85 (t, J=7 Hz, 2H) , 2.2 (s, 3H) , 2.05 (s, 3H) ; MS (FD) m/e 326 (M ⁺ ) ;

UV (EtOH) 297nm (e=17467) , 257nm (e=10021) , 219nm (e=16075, 201nm (e=22380)) . Anal. Calcd for Ci4HιgN3S2Cl:

Theory: C, 51.60; H, 4.95; N, 12.89. Found: C, 51.70; H, 5.07; N, 13.08.

Example 165 1-T (2-naPthoTl.21thiazolvl)thiocarbamovll imidazole

A solution of l,l'-thiocarbonyldiimidazole (1.8 g, 20 mmol) and 2-aminonaptho[1,2]thiazole (2.0 g, 20 mmol) in acetonitrile (150 mL) was stirred at 65°C for 24 h. The resulting precipitate was collected by filtration to provide 1.69 g (46%) of the titled product. IR (KBr, cm-1) 3148, 2670, 1465, 736; iH NMR (300 MHz, DMSO-dg) δ 9.2 (s, IH) 8.85 (s, IH) , 8.65

(d, J=8 Hz, IH) , )8.2 (br s, IH) , 8.0-7.3 (m, 5H) ;

MS (FD).m/e 309 (M ⁺ -H) ; UV (EtOH) 383nm (8=8297), 244 nm (8=15160), 226 nm

(8=17126) .

Anal. Calcd for C15H10N4S2:

Theory: C, 58.04; H, 3.25; N, 18.05.

Found: C, 58.13; H, 3.21; N, 18.03.

Examole 166 N- 2-Phenylethyl1-N'-r2-naptho.1.21thiazolvl1 thiourea A solution of l-[ (2-naptho[1,2]thiazolyl)- thiocarbamoyl] imidazole (1.6 g, 5 mmol) and 2- 5 phenylethylamine (0.62 g, 5.2 mmol) in N,N- di ethylformamide (20 mL) was stirred at 90°C for 1 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 1.5 g (82%) of the titled product: 10 IR (KBr, cm-1) 3171, 3027, 1581, 1521, 1213, 695;

1H NMR (300 MHz, DMSO-dg) δ 11.7 (br s, IH) , 9.9 (br s,

IH) , 8.25 (d, J=8 Hz, IH) , 8.0 (d, J=8 Hz, 2H) , 7.8 (d, J=8

Hz, IH) , 7.6-7.2 (m, 7H) , 3.95 (m, 2H) , 3.05 (t, J=7 Hz,

2H); 15 MS (FD)-m/e 364 (M ⁺ ) ;

UV (EtOH) 340nm (8=23922), 325nm (8=19262), 313nm (8=20808),

245nm (ε=39665), 209 nm (ε=36141) .

Anal. Calcd for C20H17N3S2:

Theory: C, 66.09; H, 4.71; N, 11.56. 20 Found: C, 65.86; H, 4.84; N, 11.48.

Example 167 l-r (2-r4-methvl1thiazolvl) thiocarbamoyl1 imidazole A solution of 1,1'-thiocarbonyldiimidazole 25 (13.37 g, 75 mmol) and 2-amino-4-methylthiazole (8.55 g, 75 mmol) in acetonitrile (150 mL) was stirred at room temperature for 24 h. The resulting precipitate was collected by filtration to provide 14.22 g (85%) of the titled product: 30 IR (KBr", cm ^"1 ) 3179, 2558, 1455, 1217, 737;

*"*

!H NMR (300 Hz , DMSO-dg) δ 8 . 55 (s , IH) 7 .9 ( s, IH) , 7 . 05 (s , IH) , ) , 6. 9 (s , IH) , 2 .3 (s, 3H) ; MS (FD) m/e 224 (M+-H) ;

UV (EtOH) 359nm (6=10749), 291 nm (6=8720), 202 nm (6=20498).

Anal. Calcd for C8H8N4S2

Theory: C, 42.84; H, 3.59; N, 24.98. Found: C, 42.90; H, 3.54; N, 24.89.

Example 168

N-(2-n-cvclohexenvllethvl)-N*-F2-(4-methvl)thiazolvll thiourea A solution of l-[ (2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (2.24 g, 10 mmol) and 2-(l- cyclohexenyl)ethylamine (1.25 g, 10 mmol) in N, N- dimethylformamide (25 mL) was stirred at 90°C for 4 h, the reaction waε cooled to room temperature and the εolvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 2.4 g (86%) of the titled product: IR (KBr ^* , cm-1) 3177, 2918, 1565, 1505, 1202, 717;

1H NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 9.85 (br s,

IH), 6.65 (ε, IH), 5.45 (s, IH) , 3.65 (m, 2H) , 2.25 (m, 5H) , 1.9 (m, 4H), 1.55 (m, 4H) ; MS (FD) m/e 281 (M ⁺ ) ; UV (EtOH) 291nm (8=19178), 257nm (8=9837), 201 nm (8=16247).

Anal. Calcd for C13H19N3S2:

Theory: C, 55.48; H, 6.80; N, 14.93. Found: C, 55.40; H, 6.82; N, 14.77.

Example 169 N-T2-(2-chlorophenyl)ethvll-N--.2-(4-methvl)thiazolvll thiourea „ . A solution of l-[ (2-[4-methyl]thiazolyl)

5 thiocarbamoyl] imidazole (2.24 g, 10 mmol) and 2-(2- chlorophenyl)ethylamine (1.56 g, 10 mmol) in N, N- dimethylformamide (25 mL) was stirred at 90°C for 1.5 h, the reaction was cooled to room temperature and the εolvent removed in vacuo. The residue was crystallized from ethyl 10 acetate ^' to provide 2.4 g (77%) of the titled product: IR (KBr, cm-1) 3163, 3012, 1584, 1214, 754, 706; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 9.8 (br S,

IH), 7.5-7.2 (m, 4H) , 6.65 (s, IH) , 3.85 (m, 2H) , 3.05 (t,

J=7 Hz, 2H) , 2.2 (ε, 3H) ; 15 MS (FD) m/e 311 (M+) ;

UV (EtOH) 292nm (8=18641), 257nm (8=10471), 202 nm

(8=24729).

Anal. Calcd for C13H14N3S2CI:

Theory: C, 50.07; H, 4.52; N, 13.47. 20 Found: C, 49.99; H, 4.56; N, 13.45.

Example 170 N- . 2-(3-chlorophenyl)ethvll-N'-.2-(4-methvl)thiazolyll thiourea 25 A εolution of l-[ (2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (2.24 g, 10 mmol) and 2-(3- chlorophenyl)ethylamine (1.56 g, 10 mmol) in N,N- dimethylformamide (25 mL) waε stirred at 90°C for 1.5 h, the reaction was cooled to room temperature and the εolvent 30 removed in vacuo. The reεidue waε crystallized from ethyl *■ acetate to provide 2.67 g (86%) of the titled product:

IR (KBr, cm ^-1 ) 3171, 3016, 1581, 1214, 761, 713; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 9.85 (br ε,

IH), 7.4-7.2 (m, 4H) , 6.65 (ε, IH) , 3.85 (m, 2H) , 2.95 (t, J=7 Hz, 2H), 2.2 (ε, 3H) ; MS (FD) m/e 311 (M ⁺ ) ;

UV (EtOH) 293nm (8=18976), 257nm (8=10523), 202 nm (8=27048) . Anal. Calcd for C13H14N3S2CI:

Theory: C, 50.07; H, 4.52; N, 13.47. Found: C, 49.94; H, 4.48; N, 13.37.

Example 171 N-.2-f4-chlorophenyl)ethvll-N ¹ - \2-(4-methvl)thiazolvll thiourea - A solution of l-[ (2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (2.24 g, 10 mmol) and 2-(4- chlorophenyl)ethylamine (1.56 g, 10 mmol) in N, N- dimethylformamide (25 mL) was stirred at 90°C for 1.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 2.52 g (81%) of the titled product: IR (KBr, cm ^-1 ) 3170, 3022, 1562, 1215, 744, 709; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 9.85 (br ε,

IH), 7.38 (d, J=8 Hz,, 2H), 7.30 (d, J=8 Hz,, 2H) , 6.65 (ε, IH), 3.8 (m, 2H) , 2.9 (t, J=7 Hz, 2H) , 2.18 (s, 3H) ; MS (FD) m/e 311 (M ⁺ ) ;

UV (EtOH) 292nm (8=16470), 257nm (8=9506), 219nm (6=13695), 201 nm (6=20563) .

Anal. Calcd for C13H14N3S2CI:

Theory: C, 50.07; H, 4.52; N, 13.47. Found: C, 49.94; H, 4.55; N, 13.58.

Example 172

N-.2-(2-methoxyphenyl)ethvll-N'-f2- (4-methvl)thiazolvll thiourea A solution of l-[ (2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole(2.24 g, 10 mmol) and 2-(2- methoxyphenyl)ethylamine (1.51 g, 10 mmol) in N,N- dimethy1formamide (25 mL) was εtirred at 90°C for 2 h, the reaction waε cooled to room temperature and the εolvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 2.2 g (73%) of the titled product: IR (KBr, cm ^"1 ) 3173, 3024, 1568, 1246, 1206, 750, 694; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 9.85 (br s,

IH) , 7.2-6.8 (m, 4H) , 6.65 (s, IH) , 3.75 (m, 5H) , 2.9 (t, J=7 Hz, 2H) , 2.18 (ε, 3H) ; MS (FD) m/e 307 (M ⁺ ) ; UV (EtOH) 291nm (6=18637), 259nm (6=10786), 202 nm

(6=25565) . Anal. Calcd for C14H17N3OS2:

Theory: C, 54.70; H, 5.57; N, 13.67. Found: C, 54.68; H, 5.50; N, 13.46.

Example 173 N-.2- ( -methoxyphenyl)ethvl1-N-- . 2-(4-methvl)thiazolvll thiourea A εolution of l-[ (2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole(2.24 g, 10 mmol) and 2-(3- methoxyphenyl)ethylamine (1.51 g, 10 mmol) in N,N-

dimethylformamide (25 mL) was stirred at 90°C for 3.5 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 2.73 g (89%) of the titled product: IR (KBr, cm- ¹ ) 3170, 3029, 1586, 1213, 749, 691; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 9.9 (br ε,

IH), 7.2-6.8 ( , 4H) , 6.65 (ε, IH) , 3.8 (m, 2H) . 3.72 (s, 3H) , 2.85 (t, J=7 Hz, 2H) , 2.18 (s, 3H) ; MS (FD) m/e 307 (M+) ; UV (EtOH) 292nm (6=16935), 258nm (6=9604), 202 nm (6=27197).

Anal. Calcd for C14H17N3OS2:

Theory: C, 54.70; H, 5.57; N, 13.67. Found: C, 54.97; H, 5.58; N, 13.60.

Example 174

N-.2-(4-methoxvphenvl) thvll-N'-T2-(4-methvl)thiazolvll thiourea A solution of l-[(2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (2.24 g, 10 mmol) and 2-(4- methoxyphenyl)ethylamine (1.51 g, 10 mmol) in N,N- dimethylformamide (25 mL) was stirred at 90°C for 3 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 2.35 g (76%) of the titled product: IR (KBr, cm ^-1 ) 3171, 3009, 1565, 1511, 1218, 720, 514; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 9.9 (br s,

IH), 7.2 (d, J=8 Hz, 2H) , 6.9 (d, J=8 Hz, 2H) , 6.65 (s, IH), 3.8 (m, 2H) , 3.75 (s, 3H) , 2.85 (t, J=7 Hz, 2H) , 2.18 (s, 3H); S (FD) m/e 307 (M ⁺ ) ;

UV (EtOH) 292nm (8=18700), 258nm (8=11165), 223nm (8=14043),

201 nm (6=25520) .

Anal. Calcd for C14H17N3OS2:

Theory: C, 54.70; H, 5.57; N, 13.67. Found: C, 54.62; H, 5.55; N, 13.69.

Example 175

N-.2-( -methvlphenvl) thvll-N'-.2-(4-methvl)thiazolvll thiourea A solution of 2-(4-methylphenyl)ethyl isothiocyanate (1.0 g, 5.64 mmol) and 2-amino-4- methylthiazole (0.644 g, 5.64 mmol) in N,N- di ethy1formamide (20 mL) was heated to 90°C for 24 h. The solvent waε removed in vacuo. The reεultant solid was recrystallized from ethyl acetate to provide 0.67 g (41%) of the titled product as a white solid: IR (KBr, cm- ¹ ) 3170, 3020, 1562, 1507, 1203, 986; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 9.9 (br ε,

IH) , 7.18 (d, J=8 Hz, 2H) , 7.18 (d, J=8 Hz, 2H)-, 6.65 (ε, IH) , 3.8 (m, 2H) , 2.85 (t, J=7 Hz, 2H) , 2.26 (s, 3H) , 2.18 (s, 3H);

MS (FD) m/e 291 (M+) ;

UV (EtOH) 292nm (8=18863), 257nm (6=10889), 202 nm (6=21164) . Anal. Calcd for C14H17N3S2:

Theory: C, 57.70; H, 5.88; N, 14.42. Found: C, 57.83; H, 5.90; N, 14.36.

Exa ple 176

N-.2-(2-methoxyphenyl)ethvll-N'- \2-(5-chloro)thiazolvll thiourea A solution of l-[(2-[5-chloro]thiazolyl)- thiocarbamoyl] imidazole (1.22 g, 5.0 mmol) and 2-(2- methoxyphenyl)ethylamine (0.77 g, 5.0 mmol) in N,N- dimethy-1formamide (20 mL) was stirred at 90°C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.86 g (53%) of the titled product: mp 152-156°C;

IR (KBr, cm ^-1 ) 3313, 2835, 1608, 1527, 1514, 1441, 1352, 1244, 1040; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br s, IH) , 8.4 (br S,

IH), 7.4 (s, IH), 7.2-6.8 (m, 4H) , 3.74 (s, 3H) , 3.68 (m, 2H) , 2.8 (t, J=7 Hz, 2H) ; MS (FD) m/e 327 (M ⁺ ) ; UV (EtOH) 295nm (8=14366), 261 nm (8=12558), 203 nm (6=31267) .

Example 177 N-.2-( -methoxyphenyl) thvll-N ¹ - \2-(5-chloro)thiazolyll thiourea

A solution of l-[(2-[5-chloro]thiazolyl)- thiocarbamoyl] imidazole (1.22 g, 5.0 mmol) and 2-(3- methoxyphenyl)ethylamine (0.77 g, 5.0 mmol) in JW,iV- dimethy1formamide (20 mL) was stirred at 90°C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water,

saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.86 g (53%) of the titled product: mp 106-107°C; IR (KBr, cm" ¹ ) 3334, 2826, 1611, 1517, 1332, 1259, 1156,

1051, 777; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.4 (s, IH), 7.18 (m, IH) , 6.77 (m, 3H) , 3.7 (m, 5H) ,

2.8 (t, J=7 Hz, 2H); MS (FD) m/e 327 (M ⁺ ) ;

UV (EtOH) 295nm (6=13695), 260 nm (6=11987), 203 nm

(6=32295) .

Anal. Calcd for C13H14N3OS2CI:

Theory: C, 47.63; H, 4.30; N, 12.81. Found: C, 47.75; H, 4.41; N, 12.65.

Example 178

N-. -(4-methoxyphenyl)ethvll-N'-.2-(5-chloro)thiazolvll thiourea A solution of l-[ (2-[5-chloro]thiazolyl)- thiocarbamoyl] imidazole (1.22 g, 5.0 mmol) and 2-(4- methoxyphenyl)ethylamine (0.77 g, 5.0 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90°C for 2 h. The reaction was cooled to room temperature, poured into- ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate ^' to provide 1.2 g (74%) of the titled product: mp 156-158°C; IR (KBr, cm" ¹ ) 3315, 2934, 1601, 1511, 1320, 1243, 1180, 1034, 745;

•4-1 NMR (300 MHz, DMSO-dg) δ 11. 6 (br s , IH) , 8.4 (br s , IH) , 7.4 (s, IH) , 7.1 (d, J=8 Hz , 2H) , 6.8 (d, J=8 Hz , 2H) , 3 .67 (s ^' , 3H) , 3 . 63 ( , 2H) , 2.7 (t, J=7 Hz , 2H) ;

MS (FD) m/e 327 (M ⁺ ) ;

UV (EtOH) 295nm (ε=13569), 260 nm (6=12490), 223 nm (.6=18432), 202 nm (6=28264). Anal. Calcd for C13H14N3OS2CI:

Theory: C, 47.63; H, 4.30; N, 12.81. Found: C, 47.59; H, 4.34; N, 12.53.

Example 179 N-T2-(1-cvclohexenvl)ethvl1-N'-T2-(5-chloro)thiazolvll thigurea

A solution of l-[(2-[5-chloro]thiazolyl)- thiocarbamoyl] imidazole (1.22 g, 5.0 mmol) and 2-(l- cyclohexenyl)ethylamine (0.645 g, 5.0 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90°C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from methylene chloride to provide 0.83 g (55%) of the titled product: mp 145-147 °C; IR (KBr, cm" ¹ ) 3167, 2929, 1564, 1488, 1230, 1183, 1098,

1030, 685; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.4 (s, IH), 5.4 (s, IH) , 3.5 (m, 2H) , 2.15 (t, J=7 Hz, 2H), 1.9 ( , 4H), 1.5 (m, 4H) ; MS (FD) m/e 301 (M ⁺ );

UV (EtOH) 295nm (6=14231), 259 nm (ε=11275), 204 nm (6=20953). Anal. Calcd for Ci2Hι N3S2Cl:

Theory: C, 47.75; H, 5.34; N, 13.92. Found: C, 47.90; H, 5.47; N, 14.21.

Example 180 5-T.enzvl-3-phenvl-2-thiohvdantoin A solution of DL-phenylalanine (1.65 g, 10 mmol), methyl iV-phenyldithiocarbamate (1.85 g, 10 mmol), and triethylamine (1.4 mL, 10 mmol) in ethanol (30 mL) was heated at reflux for 5 h, the mixture was cooled to room temperature and the solvent removed in vacuo. The residue was dissolved in ethyl acetate, washed with IN aqueous HCl and water. The organic layer was concentrated and the residue recrystallized form ethanol to provide 2.48 g (88%) of the titled product: mp 187-189°C; MS (FD) m/e 282 (M+) .

Example 181 l-r(2-.5-bromo1 thiazolvl)thiocarbamoyl1 imidazole

A solution of 1,1'-thiocarbonyldiimidazole (9.9 g, 50 mmol) and 2-amino-5-bromothiazole (8.95 g, 50 mmol) in acetonitrile (200 mL) was stirred at 50°C for 24 h. The resulting precipitate was collected by filtration to provide 5.38 g (37%) of the titled product: ^• iH NMR (300 MHz, DMSO-d6) 9.3 (s, IH) , 8.25 (s, IH) , 7.63

(s, IH), 7.43 (s, IH) ; MS (FD) m/e 288, 290 (M+) .

Example 182

N-T2-(2-chlorophenyl)ethvll-N'-.2-(5-bromo)thiazolvll thiourea A solution of l-[ (2-[5-bromo] hiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(2- chlorophenyl)ethylamine (0.40 g, 2.5 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100 °C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.06 g (5%) of the titled product: IR (KBr, cm- ¹ ) 3318, 2926, 1562, 1512, 1257, 1177, 1052, 749, 687; iH NMR (300 MHz. DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.4-7.0 (m, 5H), 3.8 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 375. 377 (M ⁺ ) ;

UV (EtOH) 291nm (6=15522), 258 nm (6=11594), 202 nm (6=28572).

Example 183

N-.2-( -chlorophenyl)ethvll-N-- \2-(5-bromo)thiazolvll thipurea A solution of l-[(2-[5-bromo]thiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(3- chlorophenyl)ethylamine (0.40 g, 2.5 mmol) in N,N- dimethylforma ide (15 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography

on silica gel to provide 0.36 g (38%) of the titled product: mp 141-145 °C;

* «. IR (KBr, cm" ¹ ) 3168, 3019, 1568, 1514, 1331, 1251, 1189,

5 787, 686;

!H NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.44 (s, IH), 7.4-7.2 (m, 4H) , 3.7 (m, 2H) , 2.8 (t,

J=7 Hz, 2H);

MS (FD) m/e 377, 379 (M ⁺ ) ; 10 UV (EtOH) 296nm (ε=10140) , 259 nm (8=8392), 201 nm

(8=23984) .

Example 184 N- \2- (4 -chlorophenyl ) ethvll -N' - \2- (5 -bromo) thiazolvl l

15 thi urea

A solution of l-[ (2-[5-bromo]thiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(4- chlorophenyl)ethylamine (0.40 g, 2.5 mmol) in JV,JV- dimethylformamide (15 mL) was stirred at 100°C for 1 h.

20 The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.32 g (34%) of the titled

25 product: mp 147-150°C;

IR (KBr, cm ^"1 ) 3170, 3020, 1608, 1507, 1348, 1180, 745,

642; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

30 IH), 7.44 (s, IH) , 7.3 (d, J=8 Hz, 2H) , 7.2 (d, J=8 Hz, 2H) , 3.7 (m, 2H), 2.8 (t, J=7 Hz, 2H) ;

MS (FD) m/e 377, 379 (M+) ;

UV (EtOH) 296nm (6=14604), 259 nm (6=12656), 201 nm

(6=28845) .

Example 185

N-.2-(2-methoxyphenyl)ethvl1-M ^■ -.2-(5-bromo) hiazolvll thiourea A solution of 1-[(2-[5-bromo]thiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(2- methoxyphenyl)ethylamine (0.41 g, 2.5 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100 °C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.38 g (41%) of the titled product:

IR (KBr, cm- ¹ ) 3164, 2960, 1563, 1513, 1241, 1182, 1030, 757, 682; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.43 (s, IH), 7.4-7.0 (m, 4H) , 3.73 (s, 3H) , 3.7 (m, 2H) , 2.9 (t, J=7 Hz, 2H); MS (FD) m/e 371, 373 (M+);

UV (EtOH) 291nm (6=16746) , 261 nm (6=13112), 202 nm (6=31492) .

Exa ple 186

N-'2-( -methoxyphenyl)ethvll-N'- \2-(5-bromo)thiazolvll thiourea A solution of l-[ (2-[5-bromo]thiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(3- methoxyphenyl)ethylamine (0.41 g, 2.5 mmol) in JV,iV- dime hy1formamide (15 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.53 g (57%) of the titled product ^* :

IR (KBr, cm' ¹ ) 3174, 1558, 1510, 1339, 1238, 1175, 1041, 785, 688; iH NMR (300 MHz, DMSO-d6) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.44 (s, IH), 7.3-6.8 (m, 4H) , 3.7 (s, 3H) , 3.7 (m, 2H) , 2.9 (t, J=7 Hz, 2H); MS (FD) m/e 371, 373 (M+) ; UV (EtOH) 294nm (6=15068), 260 nm (6=12248), 202 nm (6=35594).

Example 187 N- \2-(4-methoxyphenyl)ethvll-N'- \2-(5-bromo)thiazolvll thipurea

A solution of l-[ (2-[5-bromo]thiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(3- methoxyphenyl)ethylamine (0.41 g, 2.5 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water,

saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.42 g (45%) of the titled product ^' : IR (KBr, cm" ¹ ) 3170, 1558, 1512, 1343, 1246, 1163, 1082, 824; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH) , 8.4 (br s,

IH), 7.44 (s, IH) , 7.1 (d, J=8 Hz, 2H) , 6.8 (d, J=8 Hz, 2H), 3.67 (s, 3H), 3.63 (m, 2H) , 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 371, 373 (M ⁺ ) ;

UV (EtOH) 295nm (6=15314), 260 nm (6=13349), 222 nm

(6=19619), 202 nm (8=30379).

Example 188 N- Ϊ2-(1-cvclohexenvl)ethvll-_! ^■ -T2-(5-bromo)thiazolvll thiourea A solution of l-[(2-[5-bromo] hiazolyl)- thiocarbamoyl] imidazole (0.72 g, 2.5 mmol) and 2-(l- cyclohexenyl)ethylamine (0.32 g, 2.5 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100°C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ^* methylene chloride to provide 0.157 g (18%) of the titled product:

IR (KBr, cm ^"1 ) 3170, 2928, 1559, 1510, 1478, 1344, 1228, 1182, 1096, 834; !H NMR (300 MHz, DMSO-dg) δ 11.6 (br s, IH), 8.3 (br s, IH), 7.4 (s, IH), 5.4 (s, IH) , 3.5 (m, 2H) , 2.15 (t, J=7 Hz, 2H), 1.9 (m, 4H) , 1.5 ( , 4H) ;

MS (FD) m/e 345 , 347 (M+) ;

UV (EtOH) 295nm (6=15533), 259 nm (6=11792), 201nm (8=21261) .

Anal. Calcd for Ci2Hι N3S2Br: Theory: C, 41.62; H, 4.66; N, 12.13.

Found: C, 41.87; H, 4.91; N, 12.21.

Example 189

N-r2-(l-Cvclohexenvl) thvll-N ^l -r2-(5-bromo)pvridvll thipurea

A stirred solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-5- bromopyridine (1.73 g, 10 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 100°C. After 17 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate to provide 1.08 g of the titled product (32%) as an off-white crystalline solid: mp 166-167°C; IR (KBr, cm" ¹ ) 3159, 2927, 1595, 1561, 1531, 1475, 1310, 1228, 1092; -4- NMR (300 MHZ, DMSO-d*) δll.09 (br s, IH),' 10.64 (s, IH), 8.20 (d, J=2.4 Hz, IH) , 7.93 (dd, J=8.9, 2.4 Hz, IH) , 7.09 (d. J=9.0 Hz, IH) , 5.47 (s, IH) , 3.62-3.58 (m, 2H) , 2.19 (t, J=6.7 Hz, 2H) , 2.00-1.90 (m, 4H) , 1.55-1.44 (m, 4H) ; MS (FD) m/e 339 (M+) , 341 (M+2); UV (EtOH) 305nm (8=14037), 274nm (8=25281).

Anal. Calcd for Ci ₄ Hι ₈ BrN ₃ S: C, 49.42; H, 5.33; N, 12.35. Found: C, 49.22; H, 5.28; N, 12.32.

Examole 190 N-f2-Phenethvl)-N'- 12- (4-methvl)pvridvl1 thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-4-methylpyridine (1.08 g, 10 mmol) in JNT-methylpyrrolidinone (20 mL) was heated to 100°C. After 16.75 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.69 g of the titled product (62%) as a white crystalline solid: mp 151-153°C; IR (KBr, c - ¹ ) 3225, 1616, 1534, 1486, 1313, 1192, 1037;

^-H NMR (300 MHZ, DMSO- d ₆ ) δ11.72 (br s, IH) , 10.42 (s, IH) ,

7.87 (d, J=5.3 Hz, IH), 7.31-7.15 (m, 5H) , 6.88 (s, IH) . 6.80 (d, J=5.2 Hz, IH) , 3.81-3.76 ( , 2H) , 2.88 (t, J=7.0 Hz, 2H) 2.20 (s, 3H); MS (FD) m/e 271 (M+) ; UV (EtOH) 290nm (6=15080), 266nm (6=15528), 247nm (ε= 13132), 202nm (ε=21819).

Anal. Calcd for C15H ₁ 7N3S: C, 66.38; H, 6.31; N, 15.48. Found: C, 66.09; H, 6.34; N, 15.71.

Example 191

N- ( 2-Phenethvl.-N'-1 ^* -(4.6-dimethvl)pyridvl1 thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-4,6-dimethylpyridine (1.22 g, 10 mmol) in Jtf-methylpyrrolidinone (20 mL) was heated to 100°C. After 16 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic

phase was washed with IN hydrochloric acid, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.81 g of the titled product (63%) as an off-white crystalline solid: mp 165-167°C; IR (KBr, cm" ¹ ) 3219, 1618, 1543, 1342, 1215;

-4. NMR (300 MHZ, DMSO- d ₆ ) 611.83 (br S, IH) , 10.35 (s, IH) ,

7.25-7.16 (m, 5H) , 6.69 (s, IH) , 6.63 (s, IH) , 3.88-3.82 (m, 2H) , 2.89 (t, J=6.8 Hz, 2H) , 2.14 (ε, 3H) , 2.09 (s,

3H) ; MS (FD) m/e 285 (M+) ;

UV (EtOH) 294nm (ε=17405), 266nm (ε=15904), 247nm (ε=

14348), 203nm (ε=23896).

Anal. Calcd for C ₁₆ H ₁₉ N ₃ S: C, 67.33; H, 6.71; N, 14.72. Found: C, 67.11; H, 6.63; N, 14.71.

Example 192 - N- (2-Phenethvl)-N'-.2-(3-hvdroχy)pvridvll thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-3-hydroxypyridine (1.10 g, 10 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 100°C. After 65.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (5% ethyl acetate/dichloromethane to 10% ethyl acetate) to provide 1.51 g of the titled product (55%). This material was recrystallized from ethyl acetate to provide 1.05 g of the titled product as an off-white crystalline solid:

p 168-169°C;

IR (KBr, cm" ¹ ) 3377, 1613, 1561, 1534, 1347, 1288, 1152; iH NMR (300 MHZ, DMSO- d ₆ ) δ11.43 (br S, IH) , 10.94 (s, IH) ,

8.32 (s, IH), 7.54-7.52 ( , IH) , 7.28-7.14 (m, 6H) , 6.90- 6.86 (m, IH), 3.84-3.77 ( , 2H) , 2.90 (t, J=7.0 Hz, 2H) ; MS (FD) m/e 273 (M+) ; UV (EtOH) 309nm (ε=17349), 261nm (6=11851), 245nm (ε=

17252), 204nm (6=23596).

Anal. Calcd for C14H15N ₃ OS: C, 61.51; H, 5.53; N, 15.37. Found: C, 61.46; H, 5.52; N, 15.35.

Example 193

N- 2- (2-Methoxyphenyl)ethvll-N'-.2-f5-bromo)pvridyl1 thiourea A stirred solution of N-(thioimidazoyl)-2-(2- methoxypheπyl)ethyl amine (2.61 g, 10 mmol) and 2-amino-5- bromopyridine (1.73 g, 10 mmol) in N,N-dimethylformamide (25 mL) was heated to 90°C. After 65 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid

(2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate to provide 1.78 g of the titled product (49%) as an off-white crystalline solid: mp 147-148°C;

IR (KBr, cm" ¹ ) 3224, 1596, 1530, 1492, 1459, 1229, 1191, 1038

iH NMR (300 MHZ, DMSO- dβ) δ11.10 (br s, IH) , 10.63 (s, IH) , 8.11 (d-, J=2.3 Hz, IH) , 7.90 (dd, J=8.9, 2.6 Hz, IH) , 7.21- 7.16 (m, 2H) , 7.06 (d, J=8.9 Hz, IH) , 6.94-6.83 (m, 2H) , 3.78-3.73 (m, 2H) , 3.72 (s, 3H) , 2.86 (t, J=6.8 Hz, 2H) ;

MS (FD) m/e 365 (M+) , 367 (M+2);

UV (EtOH) 305nm (8=13279), 274nm (ε=26971), 202nm (ε=

28527).

Anal. Calcd for CisHi ₆ BrN ₃ 0S: C, 49.19; H, 4.40; N, 11.47.

Found: C, 48.97; H, 4.36; N, 11.66.

F.xaτnple 194 N-r2-(2-Chlorophenyl ) thvl1-N ^■ -.2-(5-bromo)pvridvl1 thiourea A stirred solution of N-(thioimidazoyl)-2-(2- chlorophenyl)ethyl amine (2.65 g, 10 mmol) and 2-amino-5- bromopyridine (1.73 g, 10 mmol) in JV,iV-dimethylformamide (20 mD ^' was heated to 90°C. After 64.75 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.52 g of the titled product (41%) as a tan crystalline solid: mp 160-161°C;

IR (KBr, cm" ¹ ) 3220, 1594, 1562, 1534, 1474, 1338, 1222, 1165, 1088;

H NMR (300 MHZ, DMSO-d _£ r) δ11.16 (br S, IH) , 10.69 (s, IH) ,

8.15 (d, J=2.2 Hz, IH) , 7.93 (dd, J=8.9, 2.4 Hz, IH) , 7.41-

7.38 (m, 2H), 7.28-7.23 ( , 2H) , 7.08 (d, J=8.9 Hz, IH) ,

3.86-3.80 ( , 2H) , 3.04 (t, J=6.9 Hz, 2H) ;

MS (FD) m/e 369 (M+) , 371 (M+2);

UV (EtOH) 306nm (6=14321), 275nm (6=24813), 257nm (ε=

16728), 201nm (6=27700).

Anal. Calcd for Ci ₄ Hι ₃ BrClN ₃ S: C, 45.36; H, 3.53; N, 11.33.

Found: C, 45.13; H, 3.60; N, 11.17.

Example 195

N-(2-Phenethvl)-N'-.2-(4-n-propvl)thiazolvl1 thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.38 g, 8.44 mmol, 1.26 mL) and 2-amino-4-n-propylthiazole (1.2 g, 8.44 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 100°C. After 17 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.39 g of the titled product (54%) as a yellow crystalline solid: mp 135-137°C; IR (KBr, cm-i) 3175, 3027, 1562, 1529, 1507, 1216; H NMR (300 MHZ, DMSO- dg) δ11.50 (br s, IH) , 9.93 (br s,

IH), 7.29-7.15 (m, 5H) , 6.60 (s, IH) , 3.79-3.73 (m, 2H) , 2.85 (t, J=6.9 Hz, 2H), 2.40 (t, J=7.4 Hz, 2H) , 1.53-1.41 (m, 2H), 0.82 (t, J=7.3 Hz, 3H) ; MS (FD) m/e 305 (M+) ;

UV (EtOH) 292nm (6=19216), 257nm (ε=10283), 202nm (ε=

20314).

Anal. Calcd for C15H ₁₉ N ₃ S2: C, 58.98; H, 6.27; N, 13.76. Found: C, 59.17; H, 6.08; N, 13.55.

Example 196

N-(2-Phenethvl)-N'- \2-(3,5-dichloro)pvridvll thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-3,5-dichloropyridine (3.26 g, 20 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 125°C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (5x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (20% hexanes/dichloromethane) and then recrystallized from ethyl acetate/hexanes to provide 581 mg of the titled product (18%) as a white crystalline solid: mp 102-104°C;

IR (KBr, cm" ¹ ) 3409, 3040, 1560, 1508, 1429, 1147, 1057; ⁱ H NMR (300 MHZ, DMSO- de δ10.66 (s, IH) , 8.71 (s, IH) ,

8.27 (d, J=2.2 Hz, IH) , 8.12 (d, J=2.2 Hz, IH) , 7.32-7.19 (m, 5H), 3.82-3.76 (m, 2H) , 2.90 (t, J=7.1 Hz, 2H) ; MS (FD) m/e 325 (M+), 327 (M+2);

UV (EtOH) 311nm (6=8820), 276nm (ε=16571), 257nm (ε=

13676), 203nm (ε=19245).

Anal. Calcd for C ₁₄ H ₁₃ CI ₂ N ₃ S: C, 51.54; H, 4.02; N, 12.88.

Found: C, 51.32; H, 4.12; N, 12.69.

Example 197

N-(2-Phenethvl)-W- 2-(4-n-butvl)thiazolvl1 thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-4-n-butylthiazole (1.56 g, 10 mmol) in iV-methylpyrrolidinone (20 mL) was heated to 100°C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x), water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.63 g of the titled product (51%) as a yellow crystalline solid: mp 100-102°C; IR (KBr, cm" ¹ ) 3027, 1560, 1529, 1262, 1212; ⁱ H NMR (300 MHZ, DMSO-d _ff ) δ11.52 (br s, IH) , 9.89 (br s,

IH), 7.29-7.15 ( , 5H) , 6.59 (s, IH), 3.79-3.73 (m, 2H), 2.86 (t, J=6.9 Hz, 2H) , 2.45-2.40 (m, 2H) , 1.50-1.40 (m, 2H), 1.29-1.19 ( , 2H), 0.84 (t, J=7.3 Hz, 3H) ; MS (FD) m/e 319 (M+) ;

UV (EtOH) 292nm (6=19193), 258nm (6=10262), 203nm (ε=

20024) .

Anal. Calcd for C ₁ 6H ₂ 1N3S ₂ C, 60.15; H, 6.62; N, 13.15. Found: C, 59.86; H, 6.62; N, 12.99.

Example 198

W-T2-(l-Cvclohexenvl)ethvll-N--.2-(4-ι_-proPvl)thiazolvl 1 thiourea

A stirred solution of 2- {l-cyclohexenyl) ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-4-.n- propylthiazole (1.42 g, 10 mmol) in iV-methylpyrrolidinone

(20 mL) was heated to 100 C. After 40.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid

(2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.26 g of the titled product

(41%) as a yellow crystalline solid: mp 152-153°C; IR (KBr, cm" ¹ ) 3175, 2930, 1561, 1529, 1507, 1203;

² H NMR (300 MHZ, DMSO-d^) δ11.49 (br S, IH) , 9.90 (br s,

IH), 6.63 (s, IH), 5.42 (s, IH) , 3.60-3.54 ( , 2H) , 2.49- 2.45 (m, 2H) , 2.16 (t, J=6.5 Hz, 2H) , 1.95-1.88 (m, 4H) , 1.60-1.43 (m, 6H) , 0.84 (t, J=7.3 Hz, 3H) ; MS (FD) m/e 309 (M+) ;

UV (EtOH) 292nm, 257nm, 201nm.

Anal. Calcd for C ₁ 5H ₂ 3N3S2: C, 58.21; H, 7.49; N, 13.58.

Found: C, 58.29; H, 7.58; N, 13.37.

Example 199

N-T2-fl-Cvclohexenvl) thvll-N'- T2- (4-n-butvl)thiazolvll thiourea A stirred solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-4-n- butylthiazole (1.56 g, 10 mmol) in iV-methylpyrrolidinone (20 mL) was heated to 100°C. After 18 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl

acetate/hexanes to provide 1.02 g of the titled product (32%) as a yellow crystalline solid: mp 92-94°C;

IR (KBr, cm- ¹ ) 3174, 2927, 1583, 1532, 1507, 1466, 1203; iH NMR (300 MHZ, DMSO-dg-) δ11.73 (br s, IH) , 10.14 (br s,

IH), 6.86 (s, IH), 5.65 (s, IH), 3.83-3.78 (m, 2H) , 2.75-

2.70 (m, 2H), 2.42-2.38 (m, 2H) , 2.18-2.10 (m, 4H) , 1.81-

1.65 (m, 6H), 1.55-1.43 (m, 2H) , 1.08 (t, J=7.3 Hz, 3H) ;

MS (FD) m/e 323 (M+) ; UV (EtOH) 292nm (ε=19266), 257nm (ε=9555), 201nm (ε=

15788).

Anal. Calcd for C _1G H2 ₅ N ₃ S2: C, 59.40; H, 7.79; N, 12.99.

Found: C, 59.56; H, 7.94; N, 13.00.

Example 2QQ

N-r - fl-Cvclohexenvl thvll -N- -T2- (4-i-propvl) thiazolvll thiourea

A stirred solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-4-i- propylthiazole (1.42 g, 10 mmol) in JW-methylpyrrolidinone (20 mL) was heated to 100°C. After 15.75 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.01 g of the titled product (33%) as a pale yellow crystalline solid: mp 110-112°C; IR (KBr, cm" ¹ ) 3164, 2936, 1562, 1525, 1463, 1321, 1214;

H NMR (300 MHZ, DMSO-dg) δ11.50 (br s, IH) , 9.84 (br s,

IH), 6.61 (s, IH), 5.41 (s, IH) , 3.61-3.55 (m, 2H) , 2.82-

2.76 (m, IH), 2.17 (t, J=6.4 Hz, 2H) , 1.94-1.88 (m, 4H) ,

1.56-1.41 (m, 4H) , 1.14 (d, J=6.8 Hz, 6H) ;

MS (FD) ^' m/e 309 (M+) ;

UV (EtOH) 291nm (6=20249), 256nm (6=9969), 201nm (ε=

15880).

Anal. Calcd for C15H2 ₃ N ₃ S2: C, 58.21; H, 7.49; N, 13.58.

Found: C, 58.50; H, 7.63; N, 13.38.

Example 201 N-(2-Phenethvl)-N'-"2-(4-i-propvl) hiazolvll thiourea

A stirred solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-4-i-propylthiazole (1.42 g, 10 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 100°C. After 17 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with N/10 hydrochloric acid (2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide 1.42 g of the titled product (46%) as a yellow crystalline solid: mp 155-156°C; IR (KBr, cm" ¹ ) 3172, 2962, 1581, 1525, 1467, 1350, 1290, 1210; ⁱ H NMR (300 MHZ, DMSO-dg) δ11.52 (br s, IH) , 9.89 (br s,

IH), 7.29-7.14 ( , 5H) , 6.58 (s, IH) , 3.80-3.74 (m, 2H) , 2.87 (t, J=6.9 Hz, 2H) , 2.76-2.71 (m, IH) , 1.07 (d, J=6.8 Hz, 6H);

MS (FD) m/e 305 (M+) ;

UV (EtOH) 292nm (6=19882), 257nm (6=10580), 203nm (ε=

20047).

Anal. Calcd for C ₁₅ H ₁₉ N ₃ S ₂ : C, 58.98; H, 6.27; N, 13.76. Found: C, 58.95; H, 6.39; N, 13.72.

Example Q2

N-C2-Phenethvl)-N'-.2-( (4-σlvoχylic acid)thiazolvl)1 thiourea A solution of N-(2-phenethyl)-N'-[2-((4- ethylglyoxylate)thiazolyl)] thiourea (1.30 g, 3.58 mmol) in ethanol (30 mL) was treated with IN sodium hydroxide and heated to reflux. After 1 h, the reaction was cooled to room temperature, diluted with water and washed wtih ethyl acetate (2x) . The aqueous layer was acidified to pH 1 with hydrochloric acid and extracted with dichloromethane (2x) . The organic layers were combined, washed with brine, dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by triturating with ethyl acetate to yield 390 mg of the titled product (32%) as a light brown solid: mp >170°C (d);

IR (KBr, cπr ¹ ) 3024, 1705, 1669, 1565, 1323, 1146; NMR (300 MHZ, TMSO-dβ) δ 12.2 (br s, IH) , 9.07 (s, IH), 8.01 (s, IH), 7.28-7.14 (m, 5H) , 3.71-3.64 (m, 2H) , 2.84 (t, J=7 ^' .3 Hz, 2H); MS (FD) m/e 336 (M+l) ;

HRMS (FAB) m/e (M+l) calcd 336.0477, obs 336.0474; UV (EtOH) 284nm (6=17301), 203nm (6=18110) .

Exa ple 2Q3

N-(2-Phenethvl)-N ¹ -.2-(4-methoxvbenzothiazolvl) 1 thiourea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-4-methoxybenzothiazole (3.60 g, 20 mmol) in JV,iV-dimethylformamide (50 mL) was heated to 100°C. After 64 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (2x) , and brine. The organic layer was filtered directly to provide 3.87 g of the titled product (56%) as a white solid: mp 209-211°C;

IR (KBr, air ¹ ) 3171, 2938, 1570, 1527, 1331, 1191, 1044; iH NMR (300 MHZ, DMSO-dfr) δ 11.88 (s, IH) , 9.86 (s, IH) , 7.49-6.93 (m, 8H) , 3.86 (s, 3H) , 3.77-3.70 ( , 2H) , 2.89 (t, J=7.1 Hz, 2H); MS (FD) m/e 343 (M+) ;

HRMS (FAB) m/e (M+l) calcd 344.0891, obs 344.0884; UV (EtOH) 290nm, 248nm, 210nm.

Example 204 N-(2-Phenethvl)-N*- \2- ( (5-tr fluoromethyl)-1. .4- thiadiazolyPI thiourea A solution of 2-phenethyl isothiocyanate (3.26 g, 20 mmol, 3.0 mL) and 2-amino-5-trifluoromethyl-l,3,4- thiadiazole (3.38 g, 20 mmol) in JV,JV-dimethylformamide (50 mL) was heated to 100°C. After 40 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (3x) and brine (2x) . The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified

by flash chromatography on silica gel (5% ethyl acetate in dichloromethane) and then recrystallized from ethyl acetate to provide 171 mg of the titled product (3%) as a white solid: mp 212-213°C;

IR (KBr, cm" ¹ ) 3336, 2788, 1629, 1534, 1494, 1398, 1327,

1148, 1038; iH NMR (300 MHZ, DMSO-df) 8 12.6 (br S, IH) , 8.51 (s, IH),

7.30-7.15 ( , 5H), 3.73-3.66 (m, 2H) , 2.85 (t, J=7.3 Hz, 2H) ;

MS (FD) m/e 332 (M+) ;

UV (EtOH) 322nm (6=5240), 261nm (6=11025), 204nm (6=28776).

Anal. Calcd for C12H11F3N4S2* C, 43.36; H, 3.34; N, 16.86. Found: C, 43.20; H, 3.44; N, 16.86.

Example 205 N-(2-Phenethvl)-N'-.2-f(4-carboxvlic acid)thiazolvl)1 thiourea A solution of N-(2-phenethyl)-N'-[2-(4- cyano)thiazolyl] thiourea (250 mg, 0.867 mmol) in glacial acetic acid (10 mL) and 5N hydrochloric acid (10 mL) was heated to reflux. After 16 h, the reaction was cooled to room temperature, diluted with acetonitrile and concentrated to dryness (2x) . The solid obtained was ^" - purified by flash chromatography on silica gel (2% acetic acid in ethyl acetate) and then recrystallized from methanol/ethyl acetate to provide 13 mg of the titled product. The mother liquor was concentrated and triturated with ethyl acetate to provide another 34 mg of the titled product, for a total yield of 47 mg (18%) as a white solid: mp >230°C;

IR (KBr,cm" ¹ ) 3275, 1603, 1531, 1394, 1268; NMR (300 MHZ, DMSO-d^) δ 7.26-7.14 ( , 6H) , 3.71-3.65

(m, 2H), 2.87 (t, J=7.2 Hz, 2H) ; MS (FD) m/e 307 (M+) ; HRMS (FAB) m/e (M+l) calcd 309.0527, obs 309.0528; UV (EtOH) 288nm, 260nm, 206nm.

Example 206

N-(2-(1-cyclohexenyl)ethyl)-N'-f2-f -fluprobenzothiazolyl)1 thiourea

A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.66 g, 9.93 mmol) and 2-amino-6- fluorobenzothiazole (1.67 g, 9.93 mmol) in dimethyl sulfoxide (10 mL) was heated to 125°C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (3x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from ethyl acetate to provide 1.04 g of the titled product (31%) as a yellow crystalline solid: mp 200-201°C;

IR (KBr, cm" ¹ ) 3451, 3177, 3044, 2924, 2832, 1560, 1533, 1462, 1215, 1198; ifi NMR (300 MHZ, CDCl3)δ 10.83 (s, IH) , 10.33 (br s, IH) ,

7.61-7.56 (m, IH) , 7.41-7.37 (m, IH) , 7.17-7.10 (m, IH) ,

5.65 (s, IH), 3.87-3.81 (m, 2H) , 2.38 (t, J=6.5 Hz, 2H) ,

2.03-2.00 (m, 4H) , 1.67-1.52 (m, 4H) ; MS (FD) m/e 335 (M+) ;

UV (EtOH) 301nm, 218nm, 201nm.

Anal. Calcd for Cι HιβFN3S2: C, 57.29; H, 5.41; N, 12.53.

Found: C, 57.58; H, 5.44; N, 12.42.

Example 207

N- (2-Phenethvl)-N*-.2-(5-chlorothiazolvl)1thiourea

2-Amino-5-chlorothiazole hydrochloride (1.71 g, 10 mmol) was slurried with dichloromethane and shaken with a slight excess of sodium hydroxide solution. The layers were separated and the aqueous washed with dichloromethane. The combined organics were dried over sodium sulfate, filtered and concentrated. To the resulting solid was added 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and JV-methyl-pyrrolidinone (20 mL) . The resulting solution was heated to 100°C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, water (4x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate in dichloromethane) and then recrystallized twice from 1:1 ethyl acetate/hexanes to provide 187 mg of the titled product (6%) as a light brown crystalline solid: zap 163-164°C; IR (KBr, cm" ¹ ) 3312, 3028, 2925, 1607, 1527, 1513, 1438, 1377, 1348, 1314, 1026; iH NMR (300 MHZ, DMSO-d^) δ 11.60 (br s, IH) , 8.41 (s, IH) ,

7.39 (s, IH), 7.30-7.15 (m, 5H), 3.70-3.63 (m, 2H) , 2.82 (t, J=7.2 Hz, 2H); MS (FD) m/e 297 (M+) , 299 (M+2);

UV (EtOH) 296nm (6=14487), 260nm (6=12442) , 206nm (6=27427) .

Anal. Calcd for C12H12CIN3S2: C 48.40; H, 4.06; N, 14.11. Found: C, 48.40; H, 4.16; N, 13.85.

Example 208 N-.2-(1-Cvclohexenvl)ethvll-N ¹ -T2-( (4- tri luoromethyl)thiazolyl)1 thiourea A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-4- trifluoromethylthiazole (1.68 g, 10 mmol) in N- ethylpyrrolidinone (20 mL) was heated to 125°C. After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (3x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 139 mg of the titled product (4%) as an off-white solid: mp 153-154°C;

IR (KBr,cm" ¹ ) 3168, 2932, 1562, 1513, 1472, 1438, 1219,

1175, 1081; iH NMR .(300 MHZ. DMSO-dff) δ 11.95 (s, IH) , 8.21 (s, IH) ,

7.71 (s, IH), 5.41 (s, IH), 3.55-3.49 (m, 2H) , 2.14 (t, J=6.7 Hz, 2H), 1.93-1.83 (m, 4H) , 1.56-1.41 (m, 4H) ; MS (FD) m/e 335 (M+);

HRMS (FAB) m/e (M+l) calcd 336.0816, obs 336.0842; UV (EtOH) 285nm (ε=15215), 258nm (6=12868), 203nm (6=20271).

Example 209

N-T2-f2-Chlorophenyl) thvll-N--.2-( (4- tri luoromethyl) hiazolvl) 1 thiourea A solution of 2-(2-chlorophenyl)ethyl amine (1.56 g, 10 mmol,1.41 mL) and N-(thioimidazoyl)-2-amino-4- trifluoromethylthiazole (3.0 g, 10.8 mmol) in N,N- dimethylformamide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x), and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 870 mg of the titled product (24%) as a white crystalline solid: mp 187-188°C;

IR (KBr.cm-i) 3169, 3018, 1569, 1512, 1245, 1220, 1154, 1133, 1080; iH NMR (300 MHZ, DMSO-d^) δ 11.92 (s, IH) , 8.32 (s, IH) ,

7.71 (s, IH), 7.41-7.22 (m, 4H) , 3.76-3.69 (m, 2H) , 2.97 (t, J=7.1 Hz, 2H); MS (FD) m/e 365 (M+) ; UV (EtOH) 285nm (6=13758), 257nm (6=14164), 202nm (ε=30204) . Anal. Calcd for C13H11F3CIN3S2: C, 42.68; H, 3.03; N, 11.49. Found: C, 42.82; H, 3.14; N, 11.68.

Example 210

N-.2-(4-chlorpphenyl)ethyl1-N'-r2-((4- trifluoromethyl)thiazolvl) 1 thiourea s> A solution of 2-(4-chlorophenyl)ethyl amine 5 (1.56 g, 10 mmol, 1.40 mL) and N-(thioimidazoyl)-2-amino-4- trifluoromethylthiazole (3.0 g, 10.8 mmol) in N,N- dimethylformamide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN

10 hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl

15 acetate/hexanes to provide 570 mg of the titled product (16%) as a white crystalline solid: mp 196-197°C;

IR (KBr, cm ^"1 ) 3167, 3021, 1562, 1516, 1469, 1445, 1184, 1173, 1126, 1083; 20 iH NMR (300 MHZ, DMSO-d ) δ 11.91 (s, IH) , 8.27 (s, IH) ,

7.71 (s, IH) , 7.32 (d, J=8.4 Hz, 2H) , 7.23 (d, J=8.4 Hz,

2H), 3.72-3.65 (m, 2H) , 2.83 (t, J=7.0 Hz, 2H) ;

MS (FD) m/e 365 (M+) ;

UV (EtOH) 286nm (6=11309), 257nm (ε=11445), 202nm (ε=21815) .

25 Anal. Calcd for C13H11F3CIN3S2: C, 42.68; H, 3.03; N, 11.49. Found: C, 42.87; H, 3.05; N, 11.46.

30

Example 211 N-.2-( -Chlorophenyl) thvl1- '-T2-( (4- tι~ifluoromethyl)thiazolvl)1 thiourea A solution of 2-(3-chlorophenyl)ethyl amine (1.56 g, 10 mmol, 1.40 mL) and N-(thioimidazoyl)-2-amino-4- trifluoromethylthiazole (3.0 g, 10.8 mmol) in N,N- dimethylformamide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x), and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 407 mg of the titled product (11%) as a white crystalline solid: mp 159-160°C;

IR (KBr, cm ^-1 ) 3176, 3017, 1567, 1517, 1224, 1133, 1080; iH NMR (300 MHZ, DMSO-d^) δ 11.93 (s, IH), 8.28 (s, IH) , 7.72 (s, IH), 7.33-7.17 (m, 4H), 3.73-3.67 (m, 2H) , 2.85 (t, J=7.0 Hz, 2H); MS (FD) m/e 365 (M+), 367 (M+2); UV (EtOH) 285nm (6=14175), 257nm (6=14293), 202nm (ε=31514).

Anal. Calcd for C13H11F3CIN3S2: C, 42.68; H, 3.03; N, 11.49. Found: C, 42.72; H, 3.09; N, 11.79.

Example 212 N-T2-f -Methoχyphenyl) thyll-N'- \2-((4- trifluoromethyl) hiazolyl)1 thiourea A solution of 2-(2-methoxyphenyl)ethyl amine

(1.51 g, 10 mmol, 1.46 mL) and N-(thioimidazoyl)-2-amino-4-

trifluoromethylthiazole (3.0 g, 10.8 mmol) in N,N- dimethylformamide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 872 mg of the titled product (24%) as a white crystalline solid: mp 184-184.5°C;

IR (KBr, cm" ¹ ) 3168, 2973, 1571, 1514, 1244, 1221, 1168, 1127, 1077; iH NMR -(300 MHZ, DMSO- dβ) 8 11.87 (s, IH) , 8.24 (s, IH) ,

7.71 (s, IH), 7.18-7.10 (m, 2H) , 6.94-6.82 (m, 2H) , 3.74 (s, 3H), 3.68-3.61 (m, 2H) , 2.80 (t, J=7.0 Hz, 2H) ;

MS (FD) m/e 361 (M+);

UV (EtOH) 280nm (6=16781), 259nm (6=15202) , 203nm (6=32863) . Anal. Calcd for C14H14F3N3OS2: C, 46.53; H, 3.90; N, 11.63.

Found: C, 46.52; H, 3.94; N, 11.52.

Example 213 N-T2-(3-Methoxyphenyl)ethvll-N'-r2-((4- trifluoromethyl ) hiazolvl ) 1 thiourea

A solution of 2- (3-methoxyphenyl)ethyl amine (1.51 g, 10 mmol, 1.45 mL) and N-(thioimidazoyl)-2-amino-4- trifluoromethylthiazole (3.0 g, 10.8 mmol) in iV,JV- dimethylforma ide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN

hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate in dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 1.32 g of the titled product (36%) as a white solid: mp 139-140°C;

IR (KBr, cm" ¹ ) 3215, 3018, 1598, 1582, 1544, 1490, 1299, 1242, 1180, 1081; iH NMR (300 MHZ, DMSO-d6") δ 11.93 (s, IH) , 8.26 (s, IH) ,

7.71 (s, IH), 7.18 (t, J=8.0 Hz, IH) , 6.79-6.74 (m, 3H) ,

3.73-3.66 ( , 2H) , 3.69 (s, 3H) , 2.80 (t, J=7.0 Hz, 2H) ;

MS (FD) m/e 361 (M+); UV (EtOH) 281nm (6=15384), 258nm (6=14389), 202nm (6=35020).

Anal. Calcd for C14H14F3N3OS2: C, 46.53; H, 3.90; N, 11.63.

Found: C, 46.76; H, 3.91; N, 11.52.

Example 214 N-T2-(4-Methoxyphenyl) thvll-N--.2-( (4- trifluoromethyl) hiazolyl)1 thiourea A solution of 2-(4-methoxyphenyl)ethyl amine (1.51 g, 10 mmol, 1.46 mL) and N-(thioimidazoyl)-2-amino-4- trifluoromethylthiazole (3.0 g, 10.8 mmol) in JV,J\.- dimethylformamide (20 mL) was heated to 90-100°C. After 2 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate in

dichloromethane) and then recrystallized from 1:1 ethyl acetate/hexanes to provide 893 mg of the titled product (25%) as a white crystalline solid: mp 169-170°C; IR (KBr, cm ^"1 ) 3173, 3025, 1565, 1515, 1240, 1181, 1127,

1083; iH NMR (300 MHZ, DMSO-d _f ) δ 11.90 (s, IH) , 8.26 (s, IH) ,

7.71 (s, IH) , 7.12 (d, J=8.5 Hz, 2H) , 6.83 (d, J=8.5 Hz, 2H) , 3.67 (s, 3H) , 3.67-3.61 (m, 2H) , 2.76 (t, J=7.1 Hz, 2H) ;

MS (FD) m/e 361 (M+) ;

UV (EtOH) 284nm (6=15865), 258nm (ε=14872) , 224nm (6=16821) ,

201nm (6=29323) .

Anal. Calcd for C14H14F3N3OS2: C, 46.53; H, 3.90; N, 11.63. Found: C, 46.70; H, 3.89; N, 11.50.

Example 215 N- \ 2-(1-Cvclohexenvl)ethvl 1-N--T2-( ( . - di ethvl)thiazolvl) 1 thiourea 2-Amino-4,5-dimethylthiazole hydrochloride (1.65 g, 10 mmol) was slurried with dichloromethane and shaken with a mixture of sodium hydroxide/saturated sodium bicarbonate solution. The organics were washed with brine, dried over sodium sulfate, filtered and concentrated. To the resulting solid was added 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and JV-methylpyrrolidinone (20 mL) . The resulting solution was heated to 105° C.

After 20 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and

concentrated. The solid obtained was purified by recrystallization from 2:1 ethyl acetate/hexanes to provide 1.57 g of the titled product (53%) as a light yellow crystalline solid: mp 162-164°C;

IR (KBr, cm" ¹ ) 3170, 2917, 1583, 1554, 1514, 1433, 1325,

1255, 1215; iH NMR (300 MHZ, DMSO-d£) δ 11.35 (s, IH) , 9.83 (br s, IH) ,

5.43 (s, IH), 3.58-3.52 (m, 2H) , 2.17-2.11 (m, 5H) , 2.07 (s, 3H), 1.94-1.89 (m, 4H) , 1.57-1.44 (m, 4H) ;

MS (FD) m/e 295 (M+) ;

UV (EtOH) 297nm (6=18557) , 256nm (ε=9443) , 201nm (ε=16880) .

Anal. Calcd for C14H21N3S2: C, 56.91; H, 7.16; N, 14.22. Found: C, 57.10; H, 7.28; N, 14.36.

Example 216 N- \2-( -Ethoxv-4-methoxyphenyl)ethvll-N'-(2-thiazolvl) thiourea

A solution of 2-(3-ethoxy- -methoxyphenyl)ethyl amine (1.00 g, 5.12 mmol) and N-(thioimidazoyl)-2- aminothiazole (1.08 g, 5.12 mmol) in iV,iV-dimethylformamide (20 mL) was heated to 90-100°C. After 16 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from dichloromethane/ethyl acetate to provide 471 mg of the titled product (27%) as an off-white solid: mp 150-152°C;

IR (KBr, cm" ¹ ) 3176, 3112, 3040, 1575, 1514, 1469, 1261,

1235, 1140, 1042; NMR (300 MHZ, D SO-dff) δ11.51 (s, IH) , 9.73 (br s, IH) ,

7.28 (d, J=3.6 Hz, 1 H) , 7.07 (s, IH) , 6.90-6.78 (m, 2H) , 6.72 (d, J=8.2 Hz, IH) , 4.00-3.88 (m, 2H) , 3.80-3.67 (m, 5H) , 2.76 (t, J=6.9 Hz, 2H) , 1.25 (t, J=6.9 Hz, 3H) ; MS (FD) m/e 337 (M+) ; UV (EtOH) 287nm (6=21828) , 259nm (ε=11770) , 205nm (ε=35881) .

Anal. Calcd for C15H19N3O2S2: C, 53.39; H, 5.67; N, 12.45. Found: C, 53.10; H, 5.64; N, 12.22.

Example 217 N-.2-(3-Methoxv-4-isopropoxvphenvl)ethvll-N'-(2-thiazolvl)

A solution of 2-(3-methoxy-4-isopropoxy- phenyDethyl amine (1.00 g, 4.78 mmol) and N- (thioimidazoyl)-2-aminothiazole (1.00 g, 4.78 mmol) in N,N- dimethylformamide (20 mL) was heated to 90-95°C. After 24 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate to provide 891 mg of the titled product (53%) as yellowish needles. A sample was recrystallized a second time from ethyl acetate: mp 140-141°C;

IR (KBr, cm" ¹ ) 3165, 2971, 1560, 1516, 1466, 1266, 1182, 1144;

NMR (300 MHZ, DMSO- dβ) 11.53 (s, IH) , 9.71 (br s, IH) ,

7.28 (d, J=3.6 Hz, IH), 7.06 (s, IH) , 6.84-6.81 ( , 2H) , •

6.71-6.68 (m, IH) , 4.45-4.37 (m, IH) , 3.74-3.66 (m, 5H) ,

2.77 (t, J=7.0 Hz, 2H), 1.17 (d, J=6.0 Hz, 6H) ; MS (FD) m/e 351 (M+);

UV (EtOH) 286nm, 258nm, 204nm.

Anal. Calcd for C16H21N3O2S2: C, 54.68; H, 6.02; N, 11.96.

Found: C, 54.79; H, 6.11; N, 12.21.

Example 218

N-T2-( .4-dichlorophenyl)ethvll-N ^* -f2-thiazolvl) thiourea 2-(3,4-Dichlorophenyl)ethyl amine hydrochloride (1.00 g, 4.41 mmol) was slurried in dichloromethane and shaken with a slight excess of sodium hydroxide solution. The layers were separated and the organics were dried over sodium sulfate, filtered and concentrated. N- (thioimidazoyl)-2-aminothiazole (928 mg, 4.41 mmol) and (20 mL) were added to the resulting oil. This solution was heated to 90-100°C. After 18 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate/dichloromethane) to provide 1.0 g of 3 (68%) as a white solid. This solid was recrystallized from ethyl acetate to provide 700 mg of the titled product as a white crystalline solid: mp 159.5-160°C;

IR (KBr, cm" ¹ ) 3175, 1577, 1515, 1472, 1328, 1190, 1029; NMR ^' (300 MHZ, DMSO- dβ) 811.55 (s, IH) , 9.63 (br s, IH) ,

7.54-7.48 (m, 2H) , 7.30-7.21 (m, 2H) , 7.06 (s, IH) , 3.77-

3.70 (m, 2H), 2.87 (t, J=6.9 Hz, 2H) ; MS (FD) m/e 331 (M+);

UV (EtOH) 289nm (6=19623), 265nm (6=11818) , 204nm (6=36059) .

Anal. Calcd for C12H11CI2N3S2: C, 43.38; H, 3.34; N, 12.65.

Found: C, 43..14; H, 3.36; N, 12.63.

Example 219

N- \ 2-(2-methvl-3-trifluoromethvlphenvl) thvll-N'-(2- thiazolvl) thiourea 2-(2-Methyl-3-trifluoromethylphenyl)ethyl amine hydrochloride (1.00 g, 4.17 mmol) was slurried in dichloromethane and shaken with a slight excess of sodium hydroxide solution. The layers were separated and the organics were dried over magnesium sulfate, filtered and concentrated. N-(thioimidazoyl)-2-aminothiazole (877 mg, 4.17 mmol) and JV,i\.-dimethylformamide (20 mL) were added to the resulting oil. This solution was heated to 90-100°C.

After 65 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water, and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% ethyl acetate/dichloromethane) and then recrystallized from ethyl acetate (1st crop) or 1:1 ethyl acetate/hexanes (2nd crop) to provide 581 mg of the titled product (40%) as a white solid:

mp 158-159°C;

IR (KBr,cm-i) 3178, 3130, 2994, 1566, 1514, 1473, 1321, ^' •

1161, 1120; iH NMR (300 MHZ, DMSO-dg") δll.60 (s, IH) , 9.76 (br S, IH) , 7.52-7.47 ( , 2H) , 7.33-7.28 (m, 2H), 7.07 (s, IH) , 3.75-

3.68 (m, 2H), 2.98 (t, J=7.4 Hz, 2H) , 2.40 (s, 3H) ;

MS (FD) m/e 345 (M+) ;

UV (EtOH) 289nm (ε=19176) , 258nm (6=11507)-, 203nm (6=21953).

Anal. Calcd for C14H14F3N3S2: C48.68; H,4.08; N,12.16. Found: C48.89; H,4.06; N,12.14.

Example 220

IT-T2-(3-(3.3. -trifluoro)propvlphenvl)ethvll-N--.2- thiazolvl) thiourea 2-(3-(3,3,3-trifluoro)propylphenyl)ethyl amine tossylate (1.00 g, 2.57 mmol) was slurried in dichloromethane and shaken with a slight excess of sodium hydroxide solution. The layers were separated and the aqueous was extracted with dichloromethane. The combined organics were dried over magnesium sulfate, filtered and concentrated. N-(thioimidazoyl)-2-aminothiazole (540 mg, 2.57 mmol) and 2tf,Jtf-dimethylformamide (20 mL) were added to the resulting oil. This solution was heated to 90-95°C.

After 1 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) , and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from 40% ethyl acetate/hexanes to provide

508 mg of the titled product (55%) as an off-white crystalline solid: mp 138-139°C;

IR (CHCI3, cm-1) 3192, 3058, 2979, 1567, 1514, 1259, 1139; iH NMR (300 MHZ, DMSO-dg ^" ) δ11.53 (s, IH) , 9.73 (br s, IH) , 7.29-7.06 (m, 6H) , 3.75-3.69 (m, 2H) , 2.83 (t, J=7.0 Hz, 2H) , 2.77-2.71 (m, 2H) , 2.57-2.45 (m, 2H) ; MS (FD) m/e 359 (M+) ; UV (EtOH) 288nm (ε=19255), 257nm (ε=11152), 203nm (6=21782). Anal. Calcd for Ci5HιgF3N3S2: C, 50.13; H, 4.49; N, 11.69. Found: C, 50.36; H, 4.45; N, 11.46.

Example 221

N- (2-(1-Cvclohexenvl)ethvl)-W-r2-pvridvl1 thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-aminopyridine (941 mg, 10 mmol) in (20 mL) was heated to 100°C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate to provide 1.31 g of the titled product (50%) as a white crystalline solid: mp 153-155°C;

IR (KBr, cm" ¹ ) 3219, 2921, 1605, 1569, 1537, 1481, 1319, 1235, 1181, 1092;

NMR (300 MHZ, DMSO-dg") δ 11.55 (s, IH) , 10.47 (s , IH) , 8.09 (d ^' , J=3 .9 Hz, IH) , 7.74-7 .68 (m, IH) , 7 .09 (d, J=8.3 Hz, IH) , 7.00-6.96 (m, IH) , 5.47 (s , IH) , 3 . 65-3 .59 (m, 2H) , 2.19 (t, J=6. 6 Hz , 2H) , 1.94-1.90 (m, 4H) , 1.55-1.43 (m, 4H) ;

MS (FD) m/e 261 (M+) ; UV (EtOH) 292nm (6=15926) , 265nm (6=17724) , 247nm (6=15198) .

Anal. Calcd for C14H19N3S: C, 64.33; H, 7.33; N, 16.08. Found: C, 64.12; H, 7.33; N, 15.89.

Example 222

N-(2-phenethvl)-N ¹ -'2-(5-bromo)pvridvll thiourea

A solution of 2-phenethyl isothiocyanate (1.63 g, 10 mmol, 1.5 mL) and 2-amino-5-bromopyridine (1.73 g, 10 mmol) in JV- ethylpyrrolidinone (20 mL) was heated to 100°C.

After 22 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid (2x) , water (2x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The solid obtained was purified by recrystallization from ethyl acetate/hexanes to provide

1.20 g of the titled product (36%) as a white crystalline solid: mp 160-162°C; IR (KBr, cm" ¹ ) 3028, 1595, 1559, 1531, 1475, 1311, 1228, 1092; iH NMR (300 MHZ, DMSO-dgO δ11.16 (s, IH) , 10.65 (s, IH) ,

8.11 (d, J=2.1 Hz, IH), 7.93-7.90 (m, IH) , 7.29-7.18 (m, 5H), 7.05 (d, J=8.8 Hz, IH) , 3.82-3.77 (m, 2H) , 2.88 (t, J=7.0 Hz, 2H);

MS (FD) m/e 335 (M+) , 337 (M+2);

UV (EtOH) 305nm (6=14171), 275nm (6=24881), 201nm (6=21601).

Anal. Calcd for Ci4Hi4BrN3S: C, 50.01; H, 4.20; N, 12.50. Found: C, 49.93; H, 4.19; N, 12.52.

Example 223

N-r2-(l-rvclohexenyl)ethyl1-N ^l -r2-(5-cvano)pvridyll thiourea A stirred solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.36 g, 8.14 mmol) and 2-amino-5- cyanopyridine (0.97 g, 8.14 mmol) in JV-methylpyrrolidinone (20 mL) was heated to 100°C. After 5 days, the reaction waε cooled to room temperature and poured into EtOAc. The organic phase was washed with H20 (4x) and brine. The organic layer was dried over Na2S04, filtered and concentrated. The solid obtained was purified by flash chromatography on silica gel (2% EtOAc/CH2Cl2) . followed by recrystallization with EtOAc/hexanes to provide 78 mg of the titled product (3%) as an off-white solid: mp 195-197°C;

IR (KBr, cm" ¹ ) 2927, 2224, 1605, 1570, 1533, 1487, 1369,

1228, 1165; iH NMR ^' (300 MHZ, DMSO-dβ) 811.17 (br S, IH) , 10.96 (s,

IH), 8.57 (d, J=1.9 Hz, IH) , 8.12 (dd, J=8.8, 2.1 Hz, IH) , 7.20 (d, J=8.8 Hz, IH) , 5.47 (s, IH) , 3.66-3.59 ( , 2H) ,

2.20 (t, J=6.6 Hz, 2H) , 1.94-1.89 ( , 4H) , 1.54-1.43 (m,

4H);

MS (FD) m/e 286 (M+) ;

UV (EtOH) 308nm, 202nm. Anal. Calcd for C15H18N4S: C, 62.91; H, 6.34; N, 19.56.

Found: C, 62.70; H, 6.42; N, 19.42.

Example 224

N-(2-phenethvl)-w-T2-(4-(4-biphenvl)thiazolvll thiourea A solution of 2-phenethyl isothiocyanate (0.82 g, 5 mmol, 0.75 mL) and 2-amino-4-(4-biphenyl)thiazole (1.26 g, 5 mmol) in N, N-dimethylformamide (12.5 mL) was heated to 100°C. After 19.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with IN hydrochloric acid. The mixture was filtered and the filtrate was separated and the organic phase washed with saturated sodium bicarbonate solution, water (4x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The material was purified by flash chromatography on silica gel (1% ethyl acetate in dichloromethane to 2% ethyl acetate in dichloromethane) to provide 372 mg of the titled product (18%) . The yellow solid was recrystallized from ethyl acetate: mp 208.5-209°C;

IR (KBr, cm- ¹ ) 3437, 3172, 3029, 1570, 1553, 1511, 1211, 1060, 738; iH NMR (300 MHz, DMSO-dg) δ 11.72 (s, IH) , 9.54 (br s, IH),

7.86-7.80 (m, 2H) , 7.78-7.68 (m, 4H) , 7.58 (s, IH) , 7,52- 7.44 (m, 2H), 7.41-7.35 (m, IH) , 7.34-7.29 (m, 4H) , 7.27- 7.20 (m, IH), 3.92-3.84 ( , 2H) , 2.98 (t, J=3 Hz, 2H)-; MS (FD) m/e 415 (M+) ;

UV (EtOH) 293nm, 212nm.

Anal. Calcd for C24H21N3S2* C, 69.36; H, 5.09; N, 10.11.

Found: .C, 69.08; H, 5.10; N, 9.99.

Exa ole 225 N-(2-Phenethvl)-N ¹ -2-.4-(4-pvridvl)thiazolvll thiourea 2-Amino-4- (4-pyridyl) hiazole hydrobromide was slurried with methylene chloride and shaken with saturated sodium bicarbonate solution. The layers were separated and the aqueous washed with methylene chloride and ethyl acetate. The combined organic layers were concentrated. To the solid (1.0 g, 5.6 mmol) was added 2-phenethyl isothiocyanate (0.91 g, 5.6 mmol, 0.83mL) in i\ ^* ,iV- dimethylformamide (12.5 mL) . The resulting suspension was heated to 100°C. After 20.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was waεhed with water (4x) and brine. The organic layer waε dried over sodium sulfate, filtered and concentrated. The resulting solid was recrystallized from ethyl acetate (3x) to provide 133 mg (7%) of the titled product: mp 196.5°C;

IR (KBr*, cm ^-1 ) 3250, 2939, 1723, 1604, 1506, 1223, 670, 664; iH NMR (300 MHZ, DMSO-dg) 811.72 (s, IH) , 9.21 (br S, IH) ,

8.54 (d, J=6 Hz, 2H) , 7.82 (s, IH) , 7.63 (d, J=6 Hz, 2HΪ , 7.30-7.15 (m, 5H) , 3.84-3.77 (m, 2H) , 2.89 (t, J=7 Hz, 2H) ; MS (FD) m/e 340 (M+); HRMS (FAB) m/e (M+) calcd 341.0895, obs 341.0909;

UV (EtOH) 294nm (6=23935), 231nm (6=16356), 203nm (6=25793).

Example 226

N-f -Phenethyl)-N'-2-'4-fl-fl-ethvoxvcarbonvl)-(3-fr- butoxvcarbonvl ethoxv)imino)thiazolvl1 thiourea

2-Amino-4-(1-(1-ethoxycarbonyl)-(3-t- butoxycarbonylmethoxy)imino)thiazole (2.64 g, 8 mmol) and 2-phenethyl isothiocyanate (1.31 g, 8 mmol, 1.2 mL) in jV,_V- dimethylformamide (20 mL) were heated to 100°C. After 24 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was triturated with ethyl acetate to provide 801 mg (20%) of the titled product: mp 188.5°C;

IR (KBr, cm ^"1 ) 3293, 2975, 1749, 1594, 1543, 1453, 1382,

1231, 1154, 1054, 748, 698; iH NMR (300 MHz, DMSO-dg) δ 11.85 (s, IH) , 8.46 (br S,1H),

7.29-7.17 (m, 5H) , 4.59 (s, 2H) , 4.31-4.24 (q, J=7.1 Hz, 2H), 3.70-3.64 (m, 2H) , 2.82 (t, J=7.1 Hz, 2H) , 1.36 (s, 9H), 1.23 (t, J= 7.1 Hz, 3H) ;

MS (FD) m/e 492 (M ⁺ ) ;

UV (EtOH) 292nm, 257nm (6=16356) , 203nm.

Anal. Calcd for C22H28N4O5S2: C, 53.64; H, 5.73; N, 11.37. Found: ^* C, 53.67; H, 5.83; N, 11.34.

Example 227 N-f2-Phenethvl)-W-2-.4-t-butyl-5-methvlthiazolvll thiourea 2-Amino-4-t-butyl-5-methylthiazole (1.87 g, 11 mmol) and 2-phenethyl isothiocyanate (1.80 g, 11 mmol, 1.64 mL) in 2v ^*" ,iY-dimethylformamide (25 mL) were heated to 100°C.

After 18.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was triturated with ether to provide 1.02 g (28%) of the titled product: mp 153-153.5°C;

IR (KBr, cm" ¹ ) 3171, 2966, 1474, 1534, 1510, 1455, 1346, 1221, 1186, 755, 704; iH NMR (300 MHz, DMSO-dg) δ 11.28 (BR S, IH) , 9.90 (BR S,

IH), 7.28-7.14 (M, 5H) , 3.78-3.34 (M, 2H) , 2.84 (T, J=7 Hz,

2H), 2.27 (s, 3H), 1.16 (ε, 9H) ;

MS (FD) m/e 333 (M+) ; UV (EtOH) 297nm (6=19835), 257nm (6=9954), 202nm (6=21059).

Anal. Calcd for C17H23N3S2: C, 61.22; H, 6.95; N, 12.60.

Found: C, 61.42; H, 6.92; N, 12.55.

Example 228 N-(2-Phenethvl)-N'-2-f -(4-bromophenvl)-5-ethvlthiazolvll thiourea

2-Amino-4-(4-bromophenyl)-5-ethylthiazole (848 mg, 3 mmol) and 2-phenethyl isothiocyanate (490 mg, 3 mmol, 0.45 mL) in _V,JV-dimethy1formamide (7.5 mL) were heated to 100°C. After 22.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with IN hydrochloric acid, saturated sodium bicarbonate solution, water (3x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The resulting solid was recrystallized from

ethyl acetate and toluene to provide 146 mg (11%) of the titled product: mp 169-170°C;

IR (KBr, cm" ¹ ) 3169, 3025, 2969, 2930, 1581, 1558, 1520, 1234, 1168, 1009; iH NMR ^" (300 MHZ, DMSO-dg) δ 11.54 (s, IH) , 9.40 (br S, IH) ,

7.57 (d, J=8.3 Hz, 2H), 7.36 (d, J=8.3 Hz, 2H) , 7.21-7.14 (m, 5H), 3.75-3.73 (m, 2H) , 2.87-2.82 (m, 2H) , 2.80 (q, ^" J=7.8 Hz, 2H), 1.17 (t, J=7.8 Hz, 3H) ; MS (FD) m/e 445 (M+) , 447 (M+2);

UV (EtOH) 291nm, 263nm, 237nm, 203nm.

Anal. Calcd for C2θH2θBrN3S2: C, 53.81; H, 4.52; N, 9.41;

Found: C, 53.71; H, 4.61; N, 9.39.

Example 229

N-(2-phenethvl)-N*-r2-πvridino.2. -dithiazolvl thiourea A solution of 2-phenethyl isothiocyanate (1.33 g, 8.13 mmol, 1.21 mL) and 2-aminopyridion[2,3-d]thiazole (1.23 g, 8.13 mmol) in 2ιT,iV-dimethylformamide (15 L) was heated to 105°C. After 46.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic solution was washed with water (6x) and brine. The organic layer was dried over sodium sulfate, filtered and concentrated. The material was purified by flash chromatography on silica gel (5% ethyl acetate in dichloromethane to 10% ethyl acetate in dichloromethane) to provide 330 mg of the titled product (13%). The white powder was recystallized from ethyl acetate: mp 202-202.5°C; IR (KBr, cm- ¹ ) 3445, 3171, 3025, 1565, 1551, 1510, 1382, 1201, 1150;

iH NMR (300 MHz, DMSO-dg) δ 11.91 (br s, IH) , 9.76 (br s,

IH), 8.37 (m, IH) , 7.88 ( , IH) , 7.43 (dd, J= 3 and 6 Hz,

IH) , 7.33-7.20 (m, 5H) , 3.82-3.79 (m, 2H) , 2.89 (t, J=7 Hz,

* -«- 2H);

5 MS (FAB) m/e 315 (M+l);

UV (EtOH) 312nm (6=22468), 211nm (6=19194).

Anal. Calcd for C15H14N4S2: C, 57.30; H, 4.49; N, 17.82.

Found: C, 57.20; H, 4.49; N, 17.66.

10 Example 230

N-(2-Phenethvl)-N'-.2- (3-ethvl)pvridvllthiourea A) 2-t-Butoxvcarbonvlamino-3-ethvlpvridine 2-t-Butoxycarbonylaminopyridine (10 g, 51.5 mmol) was dissolved in tetrahydrofuran (80 mL) , and cooled 15 to -78° C. N-butyllithium (80 mL of 1.49 M in hexanes,

120 mmol) was added dropwise over a period of 1 h. After stirring for an additional 15 min at -78°C and then for 2.5 hours at -10°C, the solution was then recooled back down to -78°C and iodoethane (77.2 mmol, 6.18 mL) was added

20 dropwise over a period of 15 min via syringe. The solution was allowed to warm to room temperature. The reaction waε quenched with 100 mL of a saturated ammonium chloride and extracted with ethyl acetate (3x) . The organic layers were collected, dried over magnesium sulfate, and concentrated.

25 The resμlting solid was purified by flash chromatography on silica gel (25% ethyl acetate/hexanes) to provide the 4.9 g (43%) of the titled product as a light brown solid: mp 101-102°C;

IR (KBr,cm-i) 3174, 2968, 1725, 1594, 1519, 1442, 1278, 30 1249, 1156;

iH NMR BOO MHZ, DMSO- g-) δ 8.98 (s , 1 H) , 8 .17 (m, IH) , 7.61 (m, IH) , 7 .15 (m, IH) , 2.52 (q, J=7. 5 Hz, 2H) , 1.39 (s, 9H) , 1.08 (t, J=7.5 Hz, 3H) ;

MS (FD) m/e 222 (M+); UV (EtOH) 270nm (ε= 4398), 223nm (6=6745).

Anal. Calcd for C12H18N2O2 C, 64.84; H, 8.16; N, 12.60. Found: C, 64.91; H, 8.34; N, 12.42.

B) Preparation of 3-Ethvl-2-aminopvridine. 2-t-Butoxycarbonylamino-3-ethylpyridine (4.9 g, 19.8 mmol) was dissolved in 90 ml of 3N HCl/Acetic acid and stirred for two hours. The sloution was neutralized with 2N NaOH to pH 7 and then extracted with ethyl acetate (2x 400 ml) . The organics were dried over magnesium sulfate and concentrated giving 2.3 g (95%) of a yellowish solid. This solid was used in the next reaction without further purification.

C) N-(2-Phenethvl)-N'-.2-(3-ethvl)pvridvl1thiourea A solution of phenethyl isothiocyanate (3.61 g,

18.8 mmol, 3.3 mL) and 2-amino-3-ethylpyridine (2.3 g, 18.8 mmol) in 2\.,]\.-dimethylformamide (20 mL) was stirred at 90- 95°C for 3 h. The solution was cooled to room temperature, poured into ethyl acetate (150 mL), and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The resulting solid was purified by flash chromatography on silica gel (1.5% ethyl acetate/dichloromethane) and then recrystallized (30% ethyl

acetate/ hexanes) to give 1.1 g (21%) of the titled product as a white solid : mp 57-58°C;

IR (KBr, cm" ¹ ) 3433, 2932, 1561, 1516, 1452, 1433, 1328, 1237, 760; iH NMR (300 MHZ, DMSO-dg) δ11.58 (br s, IH) , 8.66 (ε, IH) ,

7.92-7.90 (m, IH) , 7.6-7.58 (m, IH) , 7.30-7.15 (m, 5H) , 7.02-6.98 (m, IH) , 3.83-3.77 (m, 2H) , 2.89 (t, J=6 Hz, 2H) , 2.64 (q, J=7.5 Hz, 2H) , 1.09 (t, J=7.5 Hz, 3 H) ; MS (FD) m/e 285 (M+) ;

UV (EtOH) 293nm (ε= 16632), 265nm (6=14930), 244nm (ε=

16594), 202nm (6=21127).

Anal. Calcd for Cι Hi9N3S: C, 67.33; H, 6.71; N, 14.72.

Found: C, 67.17; H, 6.88; N, 14.!l.

Example 231

N-(2-Phenethvl)-N-- 12-( -bromo)pvridvll thiourea

A) 2-t-Butoxvcarbonvlamino-3-bromopyridine 2-t-Butoxycarbonylaminopyridine (10 g, 51.5 mmol) was dissolved in tetrahydrofuran (80 mL) , and cooled to -78° C . N-butyllithium (120 mmol, 80 mL of 1.49 M in hexanes) was added dropwise over a period of 1 h . After stirring for an additional 15 min at -78°C and then for 2.5 h at -10°C, the solution was recooled back down to -78°C and 1,2-dibromoethane (77.2 mmol, 6.65 mL) was added dropwise over a period of 15 min via syringe. The solution was allowed to warm to room temperature. The reaction was quenched with 100 mL of saturated ammonium chloride and was extracted with ethyl acetate (3x) . The organic layers were collected, dried over magnesium sulfate, filtered, and

concentrated. The resulting solid was purified by flash chromatography on silica gel (25% ethyl acetate/hexanes) giving 4.5 g (32%) of the titled product as a light brown solid: mp 120-121°C;

IR (KBr, cm- ¹ ) 3191, 2980, 1729, 1521, 1442, 1365, 1272,

1166, 1032; iH NMR (300 MHZ, DMSO-dg) δ9.28 (s, IH) , 8.34 (m, IH) , 8.05

(m, IH), 7.15 (m, IH) , 1.39 (s, 9H); MS (FD) m/e 272 (M+) , 274 (M+2);

UV (EtOH) 280nm (6=4047), 230nm (6=9067), 204nm (6=16385).

E) Preparation of 3-Bromo-2-aminopvridine.

3-Bromo-2-t-butoxycarbonylaminopyridine (3.8 g,13.9 mmol) was dissolved up in 70 ml of 3N HCl/ Acetic acid and stirred for two hours. The solution was neutralized with 2N NaOH to pH 7 and then extracted with ethyl acetate (3x 300 ml) . The organics were dried over magnesium sulfate and concentrated giving a brown oil. This was put on vacuum overnight giving 2.4 g (100%) solid crystals. This was used in the next reaction without further purification: mp 57-59 ^* C; iH NMR (300 MHZ, DMSO-dg") δ 7.9 (m,lH), 7.65 (m,lH), 6.5- 6.4 (m,lH), 6.2-6.l(s, 2H) .

Cl N-(2-Phenethvl)-N'-r2-(3-bromo)pvriάV11 thiourea

A solution of phenethyl isothiocyanate (1.89g, 11.6 mmol, 1.73 mL) and 2-amino-3-bromopyridine (2.0 g, 11.6 mmol) in 2v ^*" ,JV-dimethylformamide was stirred at 90-95°C for 3 h. The solution was cooled to room temperature.

poured into ethyl acetate (150 mL) , and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The resulting solid was purified by flash chromatography on silica gel (30% ethyl acetate/hexanes) to yield 0.5 g (13%) of the titled product as a white solid: mp 95-96°C;

IR (KBr, cm" ¹ ) 3403, 3021, 1591, 1564, 1548, 1514, 1435,

1150, 750, 700; iH NMR (300 MHZ, DMSO-dg) δ11.2 (s, IH) , 8.45 (s, IH) ,

8.13-8.06 (m, 2H) , 7.29-7.18 (m, 5H) , 7.04-7.0 (m, IH) , 3.86-3.8 (m, 2H) , 2.91 (t, J=6 Hz, 2H) ; MS (FD) m/e 335 (M+) , 337 (M+2);

UV (EtOH) 298nm (6=13404), 272nm (6=16029) , 250nm (6=17186) , 203nm (8=22974) .

Anal. Calcd for Ci4Hi4N3S2Br: C, 50.01; H, 4.20; N, 12.50. Found: C, 49.77; H, 4.21; N, 12.37.

Example 232 N-(4-Bromophenethvl)-N'-.2-(4-ethv ) hiazolvl1 hiourea

4-Bromophenethylamine hydrochloride (1 g, 4.22 mmol) was slurried with dichloromethane and water. Sodium hydroxide (0.17g, 4.22 mmol) dissolved in water was added to this mixture and stirred. The organics were separated, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resulting solid was added to N- (thioimidazoyl)-2-amino-4-ethylthiazole (1.0 g, 4.22 mmol) in JV,1\.-dimethyl-formamide (20 mL) and stirred for 3 h at 90-95°C. The solution was cooled to room temperature and added to 150 mL of ethyl acetate, washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The

organics were dried over sodium sulfate, filtered, and concentrated. The solid was recrystallized (50% ethyl acetate/ hexanes) providing 0.7 g (45%) of the titled product as a yellow solid : mp 156-157°C;

IR (KBr, cm" ¹ ) 2963, 1560, 1527, 1259, 1212, 1011, 802,

743; iH NMR (300 MHZ, CDCl3)δ 10.94 (br s, IH) , 9.77 (br s,

IH), 7.41 (d, J=8.3 Hz, 2H), 7.24 (d, J=8.2 Hz, 2H) , 6.33 (s, IH), 4.03-3.97 ( , 2H) , 2.97 (t, J=6.8 Hz, 2H) , 2.49 (q, J=7.5 Hz, 2H), 1.13 (t, J=7.5 Hz, 3H) ; MS (FD) m/e 369 (M+), 371 (M+2); UV (EtOH) 292nm (6=10803), 257nm (ε=6300) .

Anal. Calcd for Ci4Hι N3SBr: C, 45.41; H, 4.35; N, 11.35. Found: C, 45.53; H, 4.42; N, 11.49.

Example 233

N-(3-Phenoxvphenethvl)-N ¹ -.2-(4-ethvl) hiazolvll thiourea 3-Phenoxyphenethylamine hydrochloride (1.0 g, 4.0 mmol) was slurried with dichloromethane and water.

Sodium hydroxide (0.16 g, 4.0 mmol) dissolved in water was added and stirred. The organics were separated, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resulting solid was added to N- (thioimidazoyl)-2-amino-4-ethylthiazole (1.0 g, 4.22 mmol) in JN7,.W-dimethyl-formamide (20 mL) and stirred for 3 h at 90-95°C. The solution was cooled to room temperature, added to 150 mL of ethyl acetate and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The oil was put on vacuum overnight and

recrystallized (50% ethyl acetate / hexanes) providing 0.6 g (42%) of the titled product as a white solid : mp 124°C;

IR (KBr, cm' ¹ ) 3177, 2966, 1563, 1534, 1509, 1491, 1446, 1349, 1287, 1260, 1218, 1158, 773; iH NMR (300 MHZ, CDCl3)δl0.99 (br s, IH) , 9.87 (br s, IH) ,

7.31-7.23 (m, 3H) , 7.09-6.84 (m, 6H) , 6.32 (s, IH) , 4.03-

3.97 (m, 2H), 2.99 (t, J=6.8 Hz, 2H) , 2.53 (q, J=7.5 Hz,

2H), 1.14 (t, J=7.5 Hz, 3H) ; MS (FD) m/e 383 (M+) ;

UV (EtOH) 293nm (6=19262), 258nm (6=11356), 205nm (6=37212).

Anal. Calcd for C20H21N3OS2: C 62.63; H, 5.52; N, 10.96.

Found: C, 62.69; H, 5.61; N, 11.06.

Example 234

N-(2-Nitrophenethvl)-N-- \2-(4-ethvl)thiazolvllthiourea 2-Nitrophenethylamine tosylate (0.97g, 3.0 mmol) was slurried with dichloromethane and water. Sodium hydroxide (0.12 g, 3 mmol) dissolved in water was added and stirred. The organics were separated, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resulting solid was added to N-(thioimidazoyl)-2-amino-4- ethylthiazole [BK8-6TT-074] (0.71 g, 3 mmol) in N,N- dimethylformamide (20 mL) and stirred for 3 h at 90-95°C. The solution was allowed to cool to room temperature and then was added to 150 mL of ethyl acetate and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The solid was recrystallized (50% ethyl acetate/ hexanes) providing 0.5g (54%) of the titled product as a white solid :

p 132-133°C;

IR (KBr, cm- ¹ ) ^' 3171, 2966, 1586, 1531, 1509 , 1341, 1215; iH NMR (300 MHZ, CDCl3 ) δ ll.06 (br s, IH) , 9 .76 (br s , IH) ,

7.98 (d ^" , J=8.1 Hz, IH) , 7.56-7.35 (m, 3H) , 6.35 (s, IH) , 4.13-4.02 (m, 2H) , 3.33 (t, J=7 Hz, 2H) , 2.56 (q, J=7.4 Hz,

2H) , 1.16 (t, J=7.4 Hz, 3H) ; MS (FD) m/e 336 (M+) ; UV (EtOH) 292nm (6= 20546) , 258nm (6= 14748 ) , 203nm (6= 24932 ) .

Anal. Calcd for Ci4Hι N4θ2S2 : C, 49 .98; H, 4.79 ; N, 16. 65. Found: C, 49.95; H, 4.86; N, 16.59.

Example 235

N-T6-(2-Phenylfc-ei-ZPxazple)1ethyll-N'-T2- ethylthiazplyltthiourea 2-[6-(2-phenylbenzoxazole)] ethylamine hydrochloride (0.88 g, 3.2 mmol) was slurried with dichloromethane and water. Sodium hydroxide (0.13 g, 3.2 mmol) dissolved in water was added and stirred. The organics were separated, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resulting solid was added to N-(thioimidazoyl)-2-amino-4- ethylthiazole (0.71 g, 3 mmol) in tf,tf-dimethylformamide (20 mL) and stirred for 3 h at 90-95°C. The solution was cooled to room temperature, added to 150 mL of ethyl acetate and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The solid was recrystallized (50% ethyl acetate/ hexanes) providing 0.64 g (49%) of the titled product as a white solid : mp 183°C;

IR (KBr, cm" ¹ ) 3178, 3035, 1578, 1533, 1506, 1253, 1214,

701; NMR (300 MHZ, CDCl3) δl0.96 (br s, IH) , 9.7 (br s, IH) ,

8.25-8.21 (m, 2H) , 7.69 (d, J=8.1 Hz, IH) , 7.53-7.48 (m, 4H), 7.29 (m, IH) , 6.28 (s, IH) , 4.13-4.06 (m, 2H) , 3.17

(t, J=6.6 Hz, 2H), 2.39 (q, J=7.5 Hz, 2H) , 1.0 (t, J=7.5 Hz, 3H);

MS (FD) m/e 408 (M+) ; UV (EtOH) 294nm (6=12603), 201nm (ε=14517) . Anal. Calcd for C21H20 4OS2: C, 61.74; H, 4.93; N, 13.71. Found: C, 61.99; H, 5.18; N, 13.85.

Example 23

N-(2-Phenoxvphenethvn-N'- .2-(ethvl)thiazolvll thiourea 2-Phenoxyphenethylamine hydrochloride (0.97 g,

3.9 mmol) was slurried with dichloromethane and water. Sodium hydroxide (0.13 g, 3.9 mmol) dissolved in water was added and stirred. The organics were separated, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resulting solid was added to N-

(thioimidazoyl)-2-amino-4-ethylthiazole (0.929 g, 3.9 mmol) in iV,J\7-dimethylforma ide (20 mL) and stirred for 3 h at 90- 95°C. The solution was cooled to room temperature, added to 150 mL of ethyl acetate and washed with 0.1N hydrochloric acid (2x) , water (3x) , and brine. The organics were dried over sodium sulfate, filtered, and concentrated. The resulting solid was recrystallized (50% ethyl acetate/ hexanes) providing 0.73 g (49%) of the titled product as a white solid : p 168°C;

IR (KBr, cm" ¹ ) 3168, 3013, 1581, 1532, 1487, 1237, 1209,

753; NMR (300 MHZ, CDCl3 ) δ l0.93 (br s, IH) , 9 . 67 (br s, IH) ,

7.35-7.24 ( , 3H) , 7.21-7.16 ( , IH) , 7.08-7.02 ( , 2H) , 6.94-6.86 (m, 3H) , 6.31 (s, IH) , 4. 05-4.0 (m, 2H) , 3 . 05 (t,

J=6.9 Hz, 2H) , 2 .5 (q, J=7.5 Hz, 2H) , 1.12 (t, J=7 .5 Hz, 3H) ;

MS (FD) m/e 383 (M+); UV (EtOH) 292nm (6=19052), 258nm (6=11450) , 204nm (6=38534) . Anal. Calcd for C20H21N3OS2: C, 62.63; H, 5.52; N, 10.96. Found: C, 62.91; H, 5.67; N, 11.22.

Example 237 N-rr(4-methv -2-thiazolvl)amino1thioxomethvll-DL- phenylalanine methyl ester

A solution of l-[(2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (0.45 g, 5.0 mmol) and DL- phenylalanine methyl ester hydrochloride (0.43 g, 2.0 mmol) in jV,27-dimethylformamide (50 mL) was heated at 110'C for 12 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystallized from ethyl ether-hexanes to provide 118 mg (18%) of the titled product: mp 131-132 ^* C; IR (KBr, cm- ¹ ) 3179, 3027, 1578, 1579, 1533,1224; NMR (300 MHz, DMSO-d6) δ 11.80 ( br s, IH) , 10.20 (br s, IH), 7.20-7.38 (m, 5H) , 6.63 (s, IH), 5.10 (q, IH) , 3.63 (s, 3H), 3.03-3.22 ( , 2H) , 2.12 (s, 3H); MS (FD) m/e 335(M+); UV (EtOH)294nm (6=18428), 257nm (6=9852) , 202nm (ε=21796) .

Anal. Calcd for C15H17N3O2S2: C, 53.71; H, 5.11; N, 12.53. Found: C, 53.47; H, 5.11; N, 12.75.

Example 238 (+-)-3-(4-methvl-2-thiazolvl)-5-(phenvlmethvl)-2-thioxo-4- imidazolidinone A solution of N-[ [ (4-methyl-2- thiazolyl)amino]thioxomethyl]-DL-phenylalanine methyl ester (0.94 g, 2.80 mmol) and p-toluene sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (80 mL) was refluxed with a Dean-Stark trap for 24 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl acetate-hexanes to provide 216.1 mg (25%) of the titled product: mp 169-171'C; IR (KBr", cm ^"1 ) 3153, 1776, 1539, 1280, 1195, 744, 303; iH NMR (300 MHz, DMSO-dg) δ 10.85 ( S, IH) , 7.40 (d, IH) ,

7.30(m, 3H) , 7.11(m, 2H) , 4.83 (t, IH) , 3.50 (d, 2H) ,

2.35 (s, 3H);

MS (FD) m/e 303 (M+) ; UV(EtOH) 265nm (6=16902), 203nm (6=17971) .

Anal. Calcd for C14H13N3OS2: C, 55.42; H,4.32; N,13.85.

Found: C55.63; H, 4.45; N, 13.91.

Example 239

N-r (2-thiazolvlamino)thioxomethvll-DL-ohenvlalanine methvl

A solution of l-[(2-thiazolyl) thiocarbamoyl] imidazole (4.21 g, 20.0 mmol) and DL-phenylalanine methyl ester hydrochloride (4.31 g, 20.0 mmol) in N,N- dimethylformamide (150 mL) was heated at 90 ^* C for 3 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystalllized from ether-hexanes to provide 3.26 g (51%) of the titled product:

IR (KBr, cm" ¹ ) 3184, 3029, 1735 1569, 1510, 1223,1189 ; iH NMR (300 MHz, DMSO-dg) δ 11.90 (s, IH) , 7.40 (d, IH) ,

7.20-7.38 (m, 5H) , 7.17 (d, IH) , 5.30 (q, IH) , 3.63 (s, 3H), 3.02-3.22 ( , 2H) ; MS (FD) m/e 321(M ⁺ );

UV (EtOH) 291nm (6=18235), 255 nm (ε=10773), 202nm (6=20575).

Anal. Calcd for C14H15N3O2S2: C, 52.31; H, 4.70; N, 13.07. Found: C, 52.24; H, 4.61; N, 13.18.

Example 240

DL-5-fphenvlmethvl)-3-(2-thiazolvl)-2-thioxo-4- thiazolidinone A solution of N-[(2-thiazolylamino)thioxomethyl]- DL-phenylalanine methyl ester (0.47 g, 2.23 mmol) and p- toluene ^' sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (50 mL) was refluxed with a Dean-Stark trap for 12 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product

was recrystallized from ethyl ether-hexanes to provide

0.243g (58%) of the titled product: mp 164-165 ^* C;

IR (KBr, cm" ¹ ) 3099, 2985, 2873, 1775,1532, 1440, 1398, 1329, 1251, 1208, 737 ; NMR (300 MHz, DMSO-dg) δ 10.90 ( 8, IH) , 7.83 (d, IH) ,

7.80 (d, IH), 7.50 (m, 3H) , 7.20 (m, 2H) , 4.90 (t, IH) , 3.17 (d, 2H); MS (FD) m/e 289 (M ⁺ ) ; UV (EtOH) 264nm (6=16108) , 202nm (ε=17275) .

Anal. Calcd for C13H11N3OS2: C, 53.96; H, 3.83; N,14.52. Found: C54.22; H, 3.96; N, 14.30.

Example 241 N-f (2-benzothiazolvlamino) thioxomethvll-DL-phenvlalanine methvl ester A solution of l-[ (2-benzothiazolyl) thiocarbamoyl] imidazole (1.30 g, 5.0 mmol) and DL- phenylalanine methyl ester hydrochloride (1.08 g, 5.0 mmol) in jV,iV-dimethylformamide (50 mL) was heated at 90 ^* C for 3 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystalllized from ethyl ether-hexanes to provide 1.31 g (70%) of the titled product: mp 168-169'C; IR (KBr, cm" ¹ ) 3168, 3030, 1732, 1548, 1525,

1206,1193; iH NMR (300 MHz, DMSO-dg) δ 10.30 (br S, IH) , 7.88 (d, IH) ,

7.62 (d, IH), 7.32 (t, IH) , 7.20-7.29 (m, 6H) , 5.18 (q, IH) , 3.70 (s, 3H), 3.22 (m, 2H) ; MS (FD) ^* m/e 37KM+) ;

UV (EtOH) 303nm (6=25329), 247 nm (6=12095), 203nm (ε=28990) .

Anal. Calcd for C18H17N3O2S2: C, 58.20; H, 4.61; N, 11.31. Found: C, 58.19; H, 4.70; N, 11.30.

Example 242 DL-3-(2-benzothiazoly )-5-(phenvlmethvl)-2-thioxo-4- thiazolidinone A solution of N-[(2- benzothiazolylamino)thioxomethyl]-DL-phenylalanine methyl ester (1.0 g, 2.69 mmol) and p-toluene sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (80 mL) was refluxed with a Dean-Stark trap for 36 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl acetate-hexanes to provide 74.9 mg (8%) of the titled product: mp 187-189 ^* C; IR (KBr, cm ^-1 ) 3250, 1766, 1522, 1489;

^X H NMR (300 MHz, DMSO-dg) δ 11.00 (s _r IH), 8.18 (d, IH),

8.02 (d, IH), 7.08-8.00 ( , 2H) , 7.37 ( , 3H) , 7.23 (d, 2H), 4.97 (t, IH), 3.18 (d, 2H); MS (FD) m/e 339(M+); UV (EtOH) 300nm (6=7355), 265nm (ε=19454), 217nm (6=26558 ), 203nm (6=31150) .

Anal. Calcd for C17H13N3OS2Ϊ C, 60.16; H,3.86; N,12.38. Found: C, 60.33; H, 4.14; N, 12.25.

Example 243

N-r r (6- luoro-2-benzothiazolvl)aminol hioxomethyll-DL- phenvlalanine methvl ester

A solution of 1-[ (2-[6-fluoro]benzothiazolyl) thiocarbamoyl] imidazole (1.40 g, 5.0 mmol) and DL- phenylalanine methyl ester hydrochloride (1.08 g, 5.0 mmol) in (175 mL) waε heated at 90 °C for 3 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystalllized from ethyl ether-hexanes to provide 900 mg (46%) of the titled product: iH NMR (300 MHz, DMSO-dg) δ 10.03 (br s, IH) , 7.82 (q, IH) ,

7.60 (m, IH), 7.20-7.32 ( , 6H) , 5.10 (q, IH) , 3.63 (s, 3H), 3.20 (t, 2H); MS (FD) m/e 389 (M+) .

Example 244 DL-3-(6-fluoro-2-benzothiazolvl)-5-(phenvlmethvl)-2-thioxo-

4-i iflazoliflinone A solution of N-[[ (6-fluoro-2- benzothiazolyl)amino]thioxomethyl]-DL-phenylalanine methyl ester (0.90 g, 2.31 mmol) and p-toluene sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (80 mL) was refluxed with a Dean-Stark trap for 48 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl ether-hexanes to provide 251mg (31%) of the titled product:

mp 223-224'C;

IR (KBr, cm ^-1 ) 3173, 1767, 1538, 1453, 1388, 1267; iH NMR (300 MHz, DMSO-d6) δ 11.02 (s, IH) , 8.00-8.12 ( ,

2H), 7.40-7.50 (m, IH), 7.20-7.39 (m, 5H) , 4.97 (t, IH) ,

3.20 (d, 2H);

MS (FD) m/e 357(M ⁺ );

UV (EtOH) 265nm (6=15680), 223nm (6=19505), 201nm (ε=23665) .

Anal. Calcd for C17H12FN3OS2: C, 57.13; H,3.38; N,11.76. Found: C56.89; H, 3.43; N, 11.60.

Example 245

N-rr (4.5-dimethvl-2-thiazolvl)amino! hioxomethvll-DL- henylalanine methyl ester

A solution of l-[(2-[4,5-dimethyl]thiazolyl) thiocarbamoyl] imidazole (1.80 g, 7.5 mmol) and DL- phenylalanine methyl ester hydrochloride (1.60 g, 7.5 mmol) in iV,W ^" -dimethylformamide (50 mL) was heated at 90 ^* C for 4 h. - The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystalllized from ether- hexanes to provide 1.91 g (72%) of the titled product: IR (KBr, cm- ¹ ) 3178, 3029, 1756, 1552, 1505, 1219 ; iH NMR (300 MHz, DMSO-dg) 811.65 (br s, IH) , 7.20-7.38 (m,

5H), 5.10 (q, IH), 3.65 (s, 3H) , 3.05-3.21 (m, 2H) , 2.20 (s, 3H), 2.08 (S, 3H); MS (FD) m/e 349(M ⁺ );

UV (EtOH) 300nm (6=17248), 257 nm (6=9202), 203nm (6=22444). Anal. Calcd for Cι HιgN3θ2S2: C 54.99; H, 5.48; N, 12.02. Found: C, 55.16; H, 5.57; N, 12.01.

Example 246

DL-3-(4.5-dimethvl-2-thiazolvl)-5-(phenvlmethvl)-2-thioox o-

4-imidazolidinone A solution of N-(4,5-dimethyl-2- thiazolyl)amino] hioxomethyl]-DL-phenylalanine (1.00 g, 2.86 mmol) and p-toluene sulfonic acid hydrate (0.20 g, 1.05 mmol) in toluene (50 mL) was refluxed with a Dean- Stark trap for 48 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl ether-hexanes to provide 0.545 g (60%) of the titled product: mp 205-207 ^* C;

IR (KBr, cm" ¹ ) 3161, 1783, 1527, 1287, 1164; iH NMR (300 MHZ, DMSO-dg) 810.80 (s, IH) , 7.30 (m, 3H) ,

7.20 (m, 2H), 4.83 (t, IH) , 3.10 (d, 2H) , 2.32 (s, 3H) , 2.21 (s, 3H));

MS (FD) m/e 317 (M ⁺ ) ;

UV (EtOH) 266nm (6=16921), 201 nm (ε=17995) .

Anal. Calcd for C15H15N3OS2: C, 56.76; H, 4.76; N, 13.24. Found: C, 56.53; H, 4.94; N, 13.49.

Example 247 N-r r ( -cvano-2-thiazolvl)aminolthioxomethvll-DL- phenylalanine methyl ester A solution of l-[ (2-[4-cyano]thiazolyl) thiocarbamoyl] imidazole (1.76 g, 7.5 mmol) and DL- phenylalanine methyl ester hydrochloride (1.62 g, 7.5 mmol)

in -tf,tf-dimethylformamide (50 mL) was heated at 90°C for 5 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, recrystallized from ethyl ether-hexanes to provide 1.42 g (55%) of the titled product:

IR (KBr, cm" ¹ ) 3011, 2220, 1742, 1672, 1586,1455, 1372; NMR (300 MHz, DMSO-dg) δ 7.12-7.38 (m, 5H) , 7.40 (s, IH),

5.05 (q, IH), 3.63 (s, 3H) , 3.03-3.22 (m, 2H) ; MS (FD) m/e 346 (M ⁺ ); UV (EtOH)287nm (ε=7404) , 257nm (ε=12260) , 206nm (ε=30014) .

Example 248

DL-3-(4-cvano-2-thiazolvl)-5-(phenvlmethvl)-2-thioxo-4- imidazolidinone A solution of N-[[ (4-cyano-2- thiazolyl)amino]thioxomethyl]-DL-phenylalanine methyl ester (1.42 g, 4.10 mmol) and p-toluene sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (80 mL) was refluxed with a

Dean-Stark trap for 24 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl ether-hexanes to provide 170.1 mg (10%) of the titled product: mp 214-216 ^* C; IR (KBr, cm" ¹ ) 3294, 3092, 2246, 1781, 1505,

1381, 1325, 1244; iH NMR (300 MHz, DMSO-dg) δ 11.08 (s, IH) , 8.90 (s, IH) , 7.22-7.80 (m, 3H) , 7.20-7.22 (m, 2H) , 4.83 (t, IH) , 3.17 (d, 2H);

MS (FD) m/e 314 (M ⁺ );

UV (EtOH) 259nm (6=15097), 205nm (6=26419) .

Anal. Calcd for C14H10N4OS2: C, 53.49; H, 3.21; N,17.82.

Found: C, 53.75; H, 3.43; N, 17.62.

Example 249 N-rr (4-trifluoromethvl-2-thiazolvl)amino!thioxomethvll-DL- phenvlalanine methvl ester A solution of l-[ (2-[4-trifluoromethyl]thiazolyl) thiocarbamoyl] imidazole (1.60 g, 5.8 mmol) and DL- phenylalanine methyl ester hydrochloride (1.24 g, 5.8 mmol) in iV.-V-dimethylformamide (50 mL) was heated at 90'C for 5h. The reaction was cooled to room temperature, solvent removed under reduced, recrystallized ethyl ether-hexanes to provide 2.22 g (99%) of the titled product:

IR (CHCI3, cm ^"1 ) 3000, 1744, 1672,1554, 1523, 1226; iH NMR (300 MHz, DMSO-dg) δ 8.64 (d, IH) , 7.82 (s, IH) ,

7.21-7.38 (m, 3H) , 7.19-7.21 (d, 2H) , 5.05 (q, IH) , 3.63 (s, 3H), 3.02-3.22 (m, 2H) ; MS (FD) m/e 389 (M+);

UV (EtOH) 287nm (6=11327), 256nm (6=11674), 203nm (6=24532).

Anal. Calcd for C15H14F3N3O2S2: C, 46.27; H, 3.62; N, 10.79. Found: C, 46.55; H, 3.57; N, 11.06.

Example 250 DL-3-(4-trifluoromethvl-2-thiazolvl)-5-(phenvlmethvl)-2- thioχp-4-imidazplidinpne

A solution of N-[[(4-trifluoromethyl-2- thiazolyl)amino]thioxomethyl]-DL-phenylalanine methyl ester(2.09 g, 5.38 mmol) and p-toluene sulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (80 mL) was refluxed with a Dean-Stark trap for 48 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl ether-hexanes to provide 1.01 g (53%) of the titled product: mp 187-189 ^* C; IR (CHCI3, cm- ¹ ) 3431, 3008, 1782, 1495, 1369, 1328, 1242, 1178, 1149, 1085; iH NMR (300 MHz. DMSO-dg) δ 11.02 (s, IH) , 8.59 (s, IH) ,

7.22-7.80 (m, 3H) , 7.20-7.22 (m, 2H) , 4.83 (t, IH) , 3.17 (d, 2H);

MS (FD) m/e 357 (M ⁺ ); UV (EtOH) 263nm (6=13898), 202nm (ε=19355) .

Anal. Calcd for C14H10F3N3OS2: C 47.05; H,2.82; N,11.76. Found: C47.33; H, 2.86; N, 11.67.

Example 251 N- (2- π-cvclohexenvll ethvl ) -«r ' - . 2- (6-bromo ) pvridinvll thiourea

A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-6- bromopyridine (1.73 g, 10 mmol) in If/JV-dimethylformamide (100 mL) was heated at 100 ^* C for 96 h. The reaction was cooled to room temperature, solvents removed under reduced

pressure, taken up in ethyl acetate washed with IN HCl. The organic layer was concentrated and the residue purified by HPLC (elution with hexanes-EtOAc) to afford 70.1 mg (2.1%) of the titled product: mp 174-175 ^* C;

IR (CHC1 ₃ , cm" ¹ ) 2936, 1592, 1512, 1448, 1203 ; iH NMR (300 MHz, DMSO-dg) δ 10.79 (S,1H), 10.65 (m, IH) ,

7.70 (t, IH), 7.28 (d, IH) , 7.19 (d, IH) , 5.60 (s, IH) , 3.70 (q, 2H), 2.23 (t, 2H) , 1.95 (s, 4H) , 1.62-1.42 (m, 4H)

MS (FD) m/e 341 (M ⁺ ) ; UV (EtOH) 303nm (6=19786), 269nm (6=18279) , 252nm (6=18006) , 201nm (ε=17992) .

Anal. Calcd for Ci HιsBrN3S: C, 49.42 H, 5.33; N, 12.35. Found: C, 49.69; H, 5.36; N, 12.09.

Example 252 N-(2-n-cvclohexenvl1ethvl)-N'- . (4-isopropvl)pvridinv11 thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (0.36 g, 2.2 mmol) and 2-amino-4- isopropylpyridine (0.36 g, 2.2 mmol) in J\.,JV- dimethylformamide (20 mL) was heated at 100 ^* C for 96 h. The reaction was cooled to room temperature, solvents removed under reduced pressure, taken up in ethyl acetate, washed with IN aqueous HCl. The organic layer was concentrated and the residue purified by HPLC (elution with hexanes-EtOAc) to afford 169 mg (5.6%) of the titled product: mp 105-106 ^* C;

IR (KBr, cm ^"1 ) 3215, 2931, 1614 1556, 1534, 1487, 1199;

iH NMR (300 MHz, DMSO-dg) 811.65 (t, IH) , 10.40 (s, IH) ,

8.30 (d, IH), 7.20 (s, IH), 6.93 (d, IH) , 5.52 (s, IH) ,

3.63 (q, 2H), 2.80 (m, IH) , 2.22 (t, 2H) , 1.95 (m, 4H) , ,

1.62-1.42 (m, 4H) , 1.18 (d, 6H);

MS (FD) m/e 303 (M+);

UV (EtOH) 290nm (6=17565) , 266nm (ε=18863) , 247nm (ε=15125) ,

203nm(6=23091) .

Anal. Calcd for C17H25N3S: C, 67.28;H, 8.30; N, 13.85.

Found: C, 67.55; H, 8.48; N, 13.94.

Example 253

N-(2-n-cvclohexenvllethvl)-N'- (2-'6- ethyl hiolbenzothiazolyll thiourea A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67g, 10 mmol) and 2-amino-6- methylthiobenzothiazole (1.96 g, 10 mmol) in N,N- dimethylformamide (20 mL) was heated at 100 ^* C for 96 h.

The reaction was cooled to room temperature, a precipitate formed, ^" collected, washed with ethyl acetate to provide 1.22 g (54%) of the titled product: mp 186-187 ^* C;

IR (KBr, cm- ¹ ) 3171, 3036, 2918, 1548, 1522, 1251, 1214; iH NMR (300 MHz, DMSO-d6) δ 11.82 (br s, IH) , 10.20 (br s,

IH), 7.88 (S, IH), 7.6-7.5 (m, IH) , 7.4-7.3 (q, IH) , 5.55 (s, IH), 3.67 (q, 2H) , 2.4 (s, 3H) , 2.25 (t, 2H) , 1.95 (s, 4H), 1.62-1.42 (m, 4H) ; MS (FD) m/e 363 (M+);

UV (EtOH) 318nm (6=14538), 256 nm (ε=6742), 224nm (ε=13749), 201 nm (ε=11940) .

Anal. Calcd for C17H21N3S3: C, 56.16; H, 5.82; N, 11.56. Found: C, 56.40; H, 5.94; N, 11.76.

Example 254 N-(2-ri-cvclohexenvπethvl)-N'-r2-(4-r4- bromol henvl)thiazolvll thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-[4-(4- bromophenyl) ]thiazole (2.55 g, 10 mmol) in jV,JV- dimethylformamide (20 mL) was heated at 100 ^* C for 72 h. The reaction was cooled to room temperature, solvent removed under reduced, recrystallized from ethyl acetate- hexanes to provide 455 mg (11%) of the titled product: mp 219-220 ^* C; IR (KBr, cm" ¹ ) 3171, 2927, 1566, 1516, 1301, 1211, 1071, 1110; NMR (300 MHz, DMSO-dg) 811.70 (s, IH) , 9.30 (br s, IH) ,

7.80 (d, 2H), 7.60 (m, 3H) , 5.43 (s, IH) , 3.67 (q, 2H) , 2.25 (t, 2H), 1.95 (s, 4H) , 1.62-1.42 (m, 4H) ; MS (FD) m/e 421 (M+) ;

UV (EtOH) 285nm (6=27781), 245 nm (6=17426), 202nm (ε=31192). Anal. Calcd for CiβH20BrN3S2: C, 51.18; H, 4.77; N, 9.95. Found: C, 51.08; H, 4.47; N, 9.91.

Exa ple 255

N-(2-rl-cvclohexenvll thvl)-N ¹ - \2-(4- \2- (hexadecyloxy)phenyll)thiazolyll thiourea A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (840 mg, 5 mmol) and 2-amino-4-(2-

[hexadecyloxy]phenyl)thiazole (2.10 g, 5 mmol) in N,N- dimethylformamide (20 mL) was heated at 100 °C for 72 h. The reaction was cooled to room temperature, solvent removed under reduced, recrystallized from ethyl acetate- hexanes to provide 900 mg (31%) of the titled product: mp 98-99 ^* C;

IR (KBr, cm" ¹ ) 2919, 1567, 1473, 1222,1062, 681; iH NMR (300 MHz, DMSO-dg) δ 11.62 (s, IH) , 9.62 (br s, IH) ,

7.95 (d-, IH), 7.56 (s, IH) , 7.30 (t, IH) , 7.12 (d, IH) , 7.0 (t, IH), 5.43 (s, IH) , 4.10 (t, 2H), 3.65 (q, 2H) , 2.25 (t, 2H), 1.95 (br s, 2H) , 1.83 (t, 3H) , 1.94-1.73 (m, 4H), 1.40-1.38 (m, 2H) , 1.23 (s, 28H) ; MS (FD) m/e 583 (M ⁺ ); UV (EtOH) 299nm (6=21244), 263 nm (ε=21549), 202nm (ε=30773) . Anal. Calcd for C34H53N3OS2: C, 69.93; H, 9.15; N, 7.19. Found: C, 69.70; H, 8.99; N, 7.28.

Example 256

N-r(2-thiazolvl)amino!thioxomethvl-DL-2-fluorophenvlal-an ine methyl ester

A solution of l-[(2-thiazolyl) thiocarbamoyl] imidazole (3.15 g, 15 mmol) and DL-2-fluorophenylalanine methyl ester hydrochloride (3.51 g, 15 mmol) in N,N- dimethylformamide (100 mL) was heated at 80 ^* C for 8 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue

recrystallized from ethyl ether-hexanes to provide 1.89 g

(37%) of the titled product:

IR (KBr, cm" ¹ ) 3187, 3122, 3090, 3037, 2950, 1739, 1566,

1495, 1209, 1182; iH NMR ^' (300 MHz, DMSO-dg) δ 11.81 (br s, IH) , 7.39 (d, IH) ,

7.26 ( , 2H) , 7.18 ( , 3H) , 5.16 (q, IH) , 3.64 (s, 3H) , 3.28 (m, 2H);

MS (FD) m/e 339 (M ⁺ );

UV (EtOH) 290nm (6=18548), 256 nm (ε=10899), 203nm (ε=19927) . Anal. Calcd for C14H14FN3O2S2: C, 49.67; H, 3.87; N,

12.42. Found: C, 49.45; H, 4.07; N, 12.40.

Example 257 DL-3-(2-thiazolvl)-5-T (2-fluoro)phenvlmethvll-2-thioxo-4- imidazolidinone

A solution of N-[ (2-thiazolyl)amino]thioxomethyl- DL-2-fluorophenylalanine methyl ester (1.0 g, 2.95 mmol) and p-toluenesulfonic acid hydrate (0.20 g 1.05 mmol) in toluene (100 mL) was refluxed with a Dean-Stark trap for 48 h. The reaction was cooled to room temperature, solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl acetate-hexanes to provide 305 mg (23%) of the titled product: IR (KBr, cm" ¹ ) 3104, 2870, 1781, 1531, 1438, 1330, 1255, 1204; NMR (300 MHz, DMSO-dg) δ 10.95 (br S, IH) , 7.85 (d, IH) , 7.78 (d, IH), 7.30 (m, 2H) , 7.18 ( , 2H) , 4.83 (t, IH) , 3.18 (d, 2H);

MS (FD) m/e 307(M ⁺ );

UV (EtOH)397 (6=586), 263nm (ε=16615) , 201nm (e=15980)

Anal. Calcd for C13H102 FOS2: C, 50.80; H,3.28; N,13.67. Found: C, 50.84; H, 3.33; N, 13.38.

Example 258 N-T (2- hiazolvl)amino! hioxomethyl-DL- .5- bis. ri luoromethyl)phenylalanine methvl ester A solution of l-[(2-thiazolyl) thiocarbamoyl] imidazole (0.46 g, 2.19 mmol) and DL-3,5- ditrifluoromethylphenylalanine methyl ester hydrochloride (0.77 g, 2.19 mmol) in tf,.N--dimethylformamide (75 mL) was heated at 80 ^* C for 7 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue recrystallized from ethyl ether-hexanes to provide 203 mg (20%) of the titled product: IR (KBr, cm ^-1 ) 3179, 3022, 1745, 1568, 1379, 1291, 1212; iH NMR (300 MHz, DMSO-dg) δ 11.82 (br s, IH) , 7.98 (s, 3H) ,

7.10 (m, IH), 5.12 (m, IH) , 3.31 (s, 3H) , 3.08 (m, 2H) ; MS (FD) m/e 457(M ⁺ ) ;

UV (EtOH) 291 (6=18895), 255nm (6=10490), 202nm (6=19571)

Anal. Calcd for C16H13F63O2S2: C, 42.01; H, 2.86; N, 9.19. Found: C, 41.90? H, 2.74; N, 9.36.

Example 259

PI.-3-(2-thiazoly )-5-r(3.5- bisI ^" trifluoromethyl! phenvlmethvl!-2-thjnxo-4- imidazolidinone A solution of N-[(2-thiazolyl)amino]thioxomethyl- DL-3,5-bistrifluoromethylphenylalanine methyl ester (0.15

g, 0.32 mmol) and p-toluene sulfonic acid hydrate (0.10 g 0.53 mmol) in toluene (65 mL) was refluxed with a Dean- Stark trap for 48 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, concentrated under reduced pressure to provide 39 mg (29%) of the titled product. IR (KBr, cm" ¹ ) 3105, 1771, 1535, 1500, 1444, 1380, 1278, 1217; iH NMR (300 MHz, DMSO-dg) δ 10.93 (br s, IH) , 8.03 (s, IH) ,

7.96 (s, 2H), 7.89 (d, IH) , 7.80 (d, IH) , 5.01 (t, IH) ,

3.37 (d, 2H);

MS (FD) m/e 425 (M+) ; UV (EtOH) 440nm (6=1169), 264nm (6=14109) .

Anal. Calcd for Ci5H9F N30S2: C, 42.35; H,2.13; N,9.88.

Found: C, 42.60; H, 2.33; N, 9.63.

Example Q N-r (2-thiazolvl)amino!thioxomethvl-DL-2-chlorophenvlalanine methvl ester A solution of l-[ (2-thiazolyl) thiocarbamoyl] imidazole (1.5 g, 7.1 mmol) and DL-2-chlorophenylalanine methyl ester hydrochloride (1.78 g, 7.1 mmol) in N,N- ^~ - dimethylformamide (65 mL) was heated at 80°C for 7 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue recrystallized from ethyl ether-hexaneε to provide 280 mg (12%) of the titled product: NMR (300 MHz, DMSO-dg) δ 7.38 (m, 3H) , 7.23 (m, 2H) , 7.08

(br s, IH), 5.17 (q, IH) , 3.62 (s, 3H) , 3.21 ( , 2H) ; MS (FD) m/e 355 (M ⁺ ) .

Example 261 N-r(2-thiazolvl) m,no!thioxomethyl-DL-4-chlorophenvlalanine methyl ester

A solution of l-[ (2-thiazolyl) thiocarbamoyl] imidazole (1.5 g, 7.1 mmol) and DL-4-chlorophenylalanine methyl ester hydrochloride (1.78 g, 7.1 mmol) in N, N- dimethylformamide (65 mL) was heated at 80 ^* C for 6 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue recrystallized from ethyl ether-hexanes to provide 840 mg (20%) of the titled product: IR (KBr, cm ^"1 ) 3176, 3025, 1735, 1562, 1510, 1493, 1467, 1452, 1387, 1353, 1306, 1202, 1191; iH NMR (300 MHz, DMSO-dg) δ 11.81 (br S, IH) , 7.39 (m, 3H) ,

7.26 (d, 2H), 7.18 (br s, IH) , 5.09 (q, IH) , 3.64 <s, 3H) , 3.18 ( , 2H); MS (FD) m/e 355(M ⁺ );

UV (EtOH) 291nm (6=18545), 255 nm (6=11222), 220nm (6=16171),

201 (6=18545).

Anal. Calcd for C12H1 CI 3O2S2: C, 47.25; H, 3.96; N, 11.81. Found: C, 47.28; H, 3.94; N, 11.88.

Example 262

DL-3-(2-thiazolvl)-5-r(4-chloro)phenvlmethvll-2-thioxo-4- imidazolidinone

A solution of N-[ (2-thiazolyl)amino]thioxomethyl- DL-4-chlorophenylalanine methyl ester (0.84 g, 2.36 mmol) and p-toluene sulfonic acid hydrate (0.20 g, 1.05 mmol) in

toluene (100 mL) was refluxed with a Dean-Stark trap for 48h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting product was recrystallized from ethyl acetate-hexanes to provide 176 mg (23%) of the titled product: ^X H NMR (300 MHz, DMSO-d6) δ 7.83 (d, IH) , 7.78 (d, IH) , 7.38 (d, 2H), 7.22 (d, 2H) , 4.85 (t, IH) , 3.11 (d, 2H) ; MS (FD) m/e 323 (M ⁺ ) .

Example 263

N-r (2-thiazolvl)amino!thioxomethyl-DL-4- tri luoromethvlphenvlalanine methvl ester

A solution of 1-[ (2-thiazolyl) thiocarbamoyl] imidazole (1.03 g, 4.1 mmol) and DL-4- trifluoromethylphenylalanine methyl ester hydrochloride (1.15 g, 4.1 mmol) in JV,JV-dimethylformamide (75 mL) was heated at 80'C for 6 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue recrystallized from ethyl ether-hexanes to provide 389 mg (24%) of the titled product: IR (KBr, cm- ¹ ) 3178, 3020, 1747, 1577, 1509, 1325, 1278, 1185; iH NMR (300 MHz, DMSO-dg) δ 11.82 (br s, IH) , 9.82 (br s,

IH), 7.63 (d, 2H), 7.39 (d, 2H)., 7.35 (d, IH) , 7.13 (s, IH), 5.18 (q, IH), 3.62 (s, 3H) , 3.31 (m, 2H) ; MS (FD) m/e 389 (M ⁺ ) ; UV (EtOH) 291nm (6=18127), 255 nm (6=10867), 201nm (6=20712).

Anal. Calcd for C15H14N3F3O2S2: C, 46.26; H, 3.62; N, 10.79. Found: C, 46.21; H, 3.69; N, 11.00.

Example 264 DL-3-(2-thiazolvl)-5-T( -tri luoromethvl)phenvlmethvl!-2- thioxo~4-imidazolidinone A solution of N-[(2-thiazolyl)amino]thioxomethyl- DL-4-trifluoromethylphenylalanine methyl ester (0.34 g, 0.87 mmol) and p-toluene sulfonic acid hydrate (0.20 g 0.106 mmol) in toluene (100 L) was refluxed with a Dean- Stark trap for 48 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue taken up in ethyl acetate, washed with saturated sodium bicarbonate and saturated sodium chloride, dried over magnesium sulfate, concentrated under reduced pressure to provide 145 mg (46%) of the titled product. IR (KBr, cm" ¹ ) 3176, 1779, 1619, 1532, 1508, 1432, 1327, 1270, 1194, 1129; iH NMR (300 MHz, DMSO-dg) δ 10.90 (br s, IH) , 7.83 (d, IH), 7.79 (d, IH). 7.6S (d, 2H) , 7.41 (d, 2H) , 4.88 (t, IH) , 3.22 (d, 2H) ; MS (FD) m/e 357(M*); UV (EtOH) 264nπv (ε=15626), 201nm (6=16341) .

Anal. Calcd for C14H10F3N3OS2: C, 47.05; H, 2.82; N,11.76. Found: C, 47.17; H, 2.82; N, 11.53.

Example 265

N-r(2-thiazolvl)amino!thioxomethyl-DL-2.6- difluorophenvlalanine methvl ester A solution of l-[(2-thiazolyl) thiocarbamoyl] imidazole (0.65 g, 3.08 mmol) and DL-2,6-

difluorophenylalanine methyl ester hydrochloride (0.78 g, 3.08 mmol) in N,N-dimethylformamide (75 mL) was heated at 80 ^* C for 7 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue recrystallized from ethyl ether-hexanes to provide 413 mg (38%) of the titled product: IR (KBr, cm- ¹ ) 3205, 3036, 1737, 1625, 1554, 1511, 1468,

1442, 1388, 1265; iH NMR (300 MHz, DMSO-dg) δ 11.83 (br S, IH) , 7.37 (q, 2H) , 7.08 (m, 2H) , 5.21 (q, IH) , 3.62 (s, 3H) , 3.31 ( , 2H) ; MS (FD) m/e 357(M ⁺ ); UV (EtOH) 291nm (6=18495), 256 nm (ε=10699), 202nm (ε=20082) .

Anal. Calcd for C14H13F2N3O2S2: C, 47.05; H, 3.67; N, 11.76. Found: C, 47.08; H, 3.76; N, 11.93.

Example 266 N-[2-(1-cvclohexenvl)ethvll-N-- U.5.6.7- tetrahvdrobenzothiazolvl1 thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 2-amino-4,5,6,7- tetrahydrobenzothiazole (1.54 g, 10 mmol) in N,N- dimethylformamide (100 mL) was heated at 100 ^* C for 120 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, the residue taken up in ethyl acetate and washed with IN HCl. The organic layer was concentrated and the residue recrystallized from ethyl acetate-hexanes to provide 426 mg (13 %) of the titled product:

IR (KBr, cm" ¹ ) 3169, 3031, 2931, 1580, 1258, 1198 ; iH NMR (300 MHz, DMSO-dg) δ 11.41 (br s, IH) , 10.05 (br s,

IH), 5.43 (s, IH), 3.58 (m, 2H) , 2.6-1.9 (m, 10H) , 1.7 (m, 4H) , 1.5 (m, 4H) ; MS (FD) m/e 321 (M+) ;

UV (EtOH) 298nm (6=12157), 257nm (6=6569), 201nm (6=12172).

Anal. Calcd for Cι H23 3S2: C, 59.97 H, 7.21; N, 13.07. Found: C, 60.06; H, 6.95; N, 12.82.

Example 267

N- \2-(l-cvclohexenvl)ethvll-N'- \2-(5-chloro)pvrazinvll thiourea A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (2.30 g, 13.7 mmol) and 2-amino-5- chloropyrazine (1.75 g, 13.7 mmol) in JV,J\.-dimethylformamide (40 mL) was heated at 100 ^* C for 192 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue taken up in ethyl acetate and washed with IN aqueous HCl. The organic layer was concentrated and the resulting product was recrystallized from ethyl acetate-hexanes to provide 64 mg (1.6%) of the titled product:

IR (KBr, cπr ¹ ) 3192, 2931, 1588, 1515, 1457, 1320, 1251, 1153; NMR (300 MHz, DMSO-d6) δ 11.01 (br s, IH) , 10.45 (t, IH) ,

8.38 (d, IH), 8.29 (d, IH) , 5.50 (br s, IH) , 3.63 (q, 2H) ,

2.21 (t ^' , 2H), 1.95 (m, 4H) , 1.52 (m, 4H) ;

MS (FD) m/e 296 (M ⁺ ) ;

UV (EtOH) 330nm (6=9176), 273nm (6=21432) , 201nm (6=10972) .

Anal. Calcd for C13H17N4SCI: C, 67.28; H, 8.30; N, 13.85. Found: "C, 67.55; H, 8.48; N, 13.94.

Example 268 N-.2-(1-cvclohexenvl)ethvll-N ¹ - (2-T4- (3,4- dichlorophenyl)1thiazolyl) thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10 mmol) and 4-(3,4- dichlorophenyl)-2-thiazolamine (2.45 g, 10 mmol) in iv7,iV- dimethylformamide (50 mL) was heated at 100 ^* C for 120 h. The reaction was cooled to room temperature, the solvent removed under reduced pressure, and the residue taken up in ethyl acetate and washed with IN HCl. The organic layer was concentrated and the residue recrystallized from ethyl acetate-hexanes to provide 933 mg (2.3%) of the titled product:

IR (KBr ^' , cm" ¹ ) 3169, 2927, 1573, 1558, 1523, 1460, 1393, 1295, 1214 ; iH NMR (300 MHz, DMSO-dg) δ 11.72 (br s, IH) , 9.11 (br s, IH), 8.07 (d, IH), 7.83 ( , IH) , 7.62 (m, 2H) , 5.45 (m, IH), 3.60 (m, 2H), 2.21 (m, 2H) , 1.85 (m, 4H) , 1.43 (m, 4H);

MS (FD) m/e 411 (M+) ; UV (MeOH) 287nm (6=25040), 241nm (6=16142) , 205nm (ε=29362) . Anal. Calcd for C18H19N3S2CI2: C, 52.42; H, 4.64; N, 10.19. Found: C, 52.63; H, 4.48; N, 10.21.

Example 269 1-(2-T2-methoxyphenyl1ethvl)thiocarbamoyl imidazole A solution of l.l'-thiocarbonyldiimidazole (1.78 g, 10 mmol) and 2-methoxyphenethylamine (1.51 g, 10 mmol)

in acetonitrile (25 mL) was stirred at room temperature for

20 h. The resulting precipitate was collected by filtration to provide 1.40 g (53%) of the titled product:

IR (KBr, cm" ¹ ) 2944, 1563, 1493, 1409, 1282, 1246, 1031, 755; iH NMR (300 MHz, DMSO-dg) δ 12.0 (br s, IH) , 7.65 (s, IH),

7.25 (m-, 2H), 7.05-6.9 (m, 4H) , 3.8 (m, 2H) , 3.8 (s, 3H) ,

2.95 (t, J=7 Hz, 2H);

MS (FD) m/e 261 (M+); UV (EtOH) 278nm (ε=7083), 216 nm (6=12683), 203 nm (6=22221).

Example 270

N-.2-(2-methoxyphenyl)ethvll-W-(2-Pvridyl) thiourea A solution of l-(2-[2- methoxyphenyl]ethyl)thiocarbamoyl imidazole (0.52 g, 2 mmol) and 2-aminopyridine (0.19 g, 2 mmol) in N,N- dimethylformamide (5 mL) was stirred at 90 ^* C for 4 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.25 g (44%) of the titled product: IR (KBr, cm" ¹ ) 3219, 3048, 1607, 1557, 1236, 1036, 756; iH NMR '(300 MHz, DMSO-dg) δ 11.65 (m, IH) , 10.55 (br s, IH),

8.1 (m, IH), 7.75 (m, IH) , 7.3-6.9 (m, 6H) , 3.8 (m, 2H) , 3.78 (s, 3H), 2.9 (t, J=7 Hz, 2H) ; MS (FD) m/e 287 (M+); UV (EtOH) 290nm (6=10141) , 267nm (6=13121), 247 nm (ε=10959), 202 nm (ε=24078) .

Example 271 N- 12-(1-cvclohexenvl)ethvll-N ¹ - \2-(6-methvl)pvridvll thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-6- ethylpyridine (1.08 g, 10.0 mmol) in iV,JV-dimethylformamide (25 mL) was heated at 90'C for 20 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was recrystallized from ethyl acetate-hexanes to provide 1.04 g (38%) of the titled product:

IR (KBr, cm" ¹ ) 3230, 2920, 1608, 1572, 1540, 1457, 1378, 1317, 1235, 1164; iH NMR (300 MHz, DMSO-dg) δ 11.7 (br t, IH) , 10.45 (s, IH) , 7.62 (t, IH), 6.95 (d, IH) , 6.90 (d, IH) , 5.50 (br s, IH) , 3.7 (q, 2H), 2.4 (s, 3H) , 2.25 (t, 2H) , 1.95 (m, 4H) , 1.55 (m, 4H);

MS (FD) m/e 275 (M+) ; UV (EtOH) 296nm (6=17669), 265nm (6=16667) , 247nm (6=15266) . Anal. Calcd for C15H21N3S: C, 65.42; H, 7.69; N, 15.26. Found: C, 65.42; H, 7.75; N, 15.20.

Example 272 N- 12-(1-cvclohexenv )ethv 1-N'-.2-( -methvl) vridvll thiourea

A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-5- methylpyridine (1.08 g, 10.0 mmol) in N.tf-dimethylformamide (25 mL) was heated at 90 ^* C for 20 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was recrystallized

from ethyl acetate-hexanes to provide 1.06 g (39%) of the titled product:

IR (KBr, cm- ¹ ) 3225, 2933, 1596, 1569, 1532, 1494, 1344,

1311, 1232, 827; iH NMR (300 MHz, DMSO-dg) δ 11.55 (br t, IH) , 10.45 (s, IH) ,

7.95 (br s, IH) , 7.6 (dd, IH) , 7.05 (d, IH) , 5.5 (br s,

IH), 3.7 (q, 2H), 2.3 ( , 5H) , 1.95 (m, 4H) , 1.55 (m, 4H) ;

MS (FD) m/e 275 (M ⁺ );

UV (EtOH) 298nm (6=13663), 268nm (ε=21631) , 249nm (ε=14893) . Anal. Calcd for C15H21N3S: C, 65.42; H, 7.69; N, 15.26.

Found: C, 65.15; H, 7.75; N, 15.33.

Example 273

W- 2-(1-cvclohexenvl)ethvll-N-- 12-(4-methvl)pvridvll thiourea

A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-4- methylpyridine (1.08 g, 10.0 mmol) in 2J ^" ,J\.-dimethylformamide (25 mL) was heated at 90 ^* C for 16 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was purified by HPLC to provide 1.67 g (61%) of the titled product; IR (KBr, cm" ¹ ) 3220, 2935, 1617, 1535, 1487, 1322, 1188, 866; NMR (300 MHz, DMSO-dg) δ 11.65 (br t, IH) , 10.45 (s, IH) ,

8.0 (d, IH), 6.95 (s, IH), 6.85 (d, IH) , 5.5 (br s, IH) , 3.65 (q, 2H), 2.3 (m, 5H) , 1.95 (m, 4H) , 1.55 (m, 4H); MS (FD) m/e 275 (M ⁺ ) ;

UV (EtOH) 289nm (6=16865) , 266nm (6=17870) , 247nm (ε=14179) , 202nm (8=20105) .

Anal. Calcd for C15H21N3S: C, 65.42; H, 7.69; N, 15.26. Found: C, 65.16; H, 7.55; N, 15.30.

Example 274 N-.2-(l-cvrlohexenvl)ethvll-N ¹ - 12-(3-methvl)pvridvl1 thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-3- methylpyridine (1.08 g, 10.0 mmol) in iV.JV-dimethylformamide (25 mL) was heated at 90 ^* C for 16 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was purified by HPLC to provide 1.8 g (65%) of the titled product; IR (KBr, cm" ¹ ) 3220, 2931, 1589, 1513, 1462, 1325, 1164; iH NMR (300 MHz, DMSO-dg) δ 11.6 (br t, IH) , 8.65 (s, IH) ,

8.05 (d, IH), 7.65 (d, IH) , 7.05 (dd, IH) , 5.5 (br s, IH) , 3.65 (q, 2H), 2.3 (s, 3H) , 2.25 (t, 2H), 1.95 (m, 4H) , 1.55 (m, 4H) ;

MS (FD) m/e 275 (M+); UV (EtOH) 293nm (6=16693), 264nm (6=14464) , 244nm (ε=14762) , 201nm (ε=16723) .

Example 275 N-T2- (1-cvclohexenvl)ethvll-N'- 12-(6-ethvl)pvridvl1 thiourea

A solution of 2-(l-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-6- ethylpyridine (1.22 g, 10.0 mmol) in iV,iV-dimethy1formamide (25 mL) was heated at 90 ^* C for 20 h. The reaction was cooled to room temperature and the solvent removed under

reduced pressure. The resulting product was purified by HPLC to provide 1.55 g (54%) of the titled product; IR (KBr, cm- ¹ ) 3230, 2930, 1604, 1533, 1450, 1211, 1157; iH NMR (300 MHz, DMSO-dg) δ 11.8 (br t, IH) , 10.45 (s, IH) , 7.62 (t, IH), 6.95 (d, IH) , 6.90 (d, IH) , 5.45 (br s, IH) ,

3.7 (q, 2H), 2.7 (q, 2H) , 2.25 (t, 2H) , 1.95 (m, 4H) , 1.55

(m, 4H), 1.2 (t, 3H);

MS (FD) m/e 289 (M ⁺ );

UV (EtOH) 296nm (6=17903), 265nm (6=16556) , 247nm (6=14932) , 201nm (6=14174) .

Anal. Calcd for CιgH23N3S: C, 66.40; H, 8.01; N, 14.52.

Found: C, 66.40; H, 8.00; N, 14.75.

Example ^* 76 N-T2-(1-cvclohexenvl)ethvll-W- 12-(4-ethvl)pvridvll thiourea

A solution of 2-{l-cyclohexenyl. ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-4- ethylpyridine (1.22 g, 10.0 mmol) in JV,-V-dimethylforma_tιide (25 mL) was heated at 90 ^* C for 16 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was purified by HPLC to provide 1.2 g (42%) of the titled product; IR (KBr, cm" ¹ ) 3215, 2931, 1615, 1535, 1407, 1334, 1198, 843; iH NMR (300 MHz, DMSO-dg) δ 11.68 (br t, IH) , 10.45 (s, IH) ,

8.0 (d, IH), 7.0 (s, IH), 6.9 (d, IH) , 5.5 (br s, IH) , 3.65 (q, 2H) ^" , 2.6 (q, 2H) , 2.25 (t, 2H) , 1.95 (m, 4H) , 1.55 (m, 4H), 1.15 (t, 3H); S (FAB) m/e 290 (M ⁺ H) ;

UV (EtOH) 289nm (6=17378), 266nm (6=18654), 247nm (6=14847), 202nm (6=23101) .

Anal. Calcd for CιgH23N3S: C, 66.40; H, 8.01; N, 14.52. Found: C, 66.45; H, 7.99; N, 14.26.

Example 277 N-r2-(l-cvclohexenvl)ethvll-N'-r2-(5- tri luoromethyl) vridvl! thiourea A solution of 2-(1-cyclohexenyl)ethyl isothiocyanate (1.67 g, 10.0 mmol) and 2-amino-5- trifluoromethylpyridine (1.62 g, 10.0 mmol) in N,N- dimethylformamide (25 mL) was heated at 90 ^* C for 72 h. The reaction was cooled to room temperature and the solvent removed under reduced pressure. The resulting product was purified by HPLC to provide 0.33 g (10%) of the titled product;

IR (KBr, air ¹ ) 3220, 2929, 1618, 1551, 1500, 1324, 1238, 1132, 1078, 828; iH NMR (300 MHz, DMSO-dg) δ 11.4 (br t, IH) , 10.95 (s, IH) , 8.5 (br s, IH) , 8.15 (dd, IH) , 7.3 (d, IH) , 5.55 (br s,

IH), 3.7 (q, 2H), 2.3 (t, 2H) , 1.95 (m, 4H) , 1.55 (m, 4H) ;

MS (FD) m/e 329 (M+) ;

UV (EtOH) 296nm (6=17058), 255nm (6=14250) .

Anal. Calcd for C15H18N3F3S: C, 54.70; H, 5.51; N, 12.76. Found: C, 54.98; H, 5.67; N, 12.59.

Example 278 N- 12-rcvclohexanvll thvl)-N*- 12-(4-methvl)thiazolvll thiourea A solution of l-[(2-[4-methyl]thiazolyl) thiocarbamoyl] imidazole (1.0 g, 4.46 mmol) and 2- cyclohexanylethyla ine (0.567 g, 4.46 mmol) in N,N- dimethylformamide (25 mL) was stirred at 90 ^* C for 16 h, the reaction was cooled to room temperature and the solvent removed' in vacuo. The residue was crystallized from ethyl acetate to provide 0.72 g (57%) of the titled product: IR (KBr, cm" ¹ ) 3220, 2922, 1565, 1505, 1227, 1168; ^X H NMR (300 MHz, DMSO-dg) δ 11.5 (br s, IH) , 9.9 (br s, IH),

6.65 (s, IH), 3.55 ( , 2H) , 2.25 (s, 3H) , 1.8-0.8 (m, 13H) ; MS (FD) m/e 283 (M ⁺ ); TJV (EtOH) 291nm (6=5315) , 257nm (6=2711) .

Anal. Calcd for C13H21N3S2: C, 55.09 H, 7.47; N, 14.82. Found: C, 55.29; H, 7.60; N, 14.64.

Example 279 N-r2-(2-methoxyphenyl)ethvl1-W- 12-(5-me hvl)pvridvl1 thiourea A solution of l-(2-[2- methoxyphenyl]ethyl)thiocarbamoyl imidazole (0.7 g, 2.68 mmol) ahd 2-amino-5-methylpyridine (0.29 g, 2.68 mmol) in jV,iV-dimethylformamide (5 mL) was stirred at 90 ^* C for 16 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.62 g (77%) of the titled product:

IR (KBr, cm ^-1 ) 3227, 2932, 1612, 1534, 1493, 1273, 1037; iH NMR (300 MHz, DMSO-d6) δ 11.55 (br t, IH) , 10.45 (s, IH) ,

7.9 (br s, IH) , 7.6 (m, IH) , 7.2-6.9 (m, 5H) , 3.8 (m, 5H) ,

2.9 (t, J=7 Hz, 2H), 2.2 (s, 3H) ;

MS (FAB) m/e 302 (M ⁺ H) ;

UV (EtOH) 298nm (ε=13316), 268nm (ε=23132), 249 nm (ε=15574) , 202 nm (6=25460) .

Anal. Calcd for CιgHιgN3θS: C, 63.76; H, 6.35; N, 13.94. Found: C, 63.71; H, 6.34; N, 13.79.

Example 280 1- 12-(2-chlorophenyl)ethvl!-thiocarbamoyl imidazole

A solution of 1,1'-thiocarbonyldiimidazole (1.8 g, 10 mmol) and 2-(2-chlorophenyl)ethyl amine (1.56 g, 10 mmol) in acetonitrile (100 mL) was stirred at room temperature for 3 h. The solution was concentrated to about 50 ml and was placed in the freezer for 4 days. The resulting crystals were collected by filtration to provide

2.37 g (89%) of crude title product. mp 74-78 ^* C.

IR (KBr, cm ^-1 ) 3134, 2924, 1564, 1529, 1474, 1448, 1411, 1353, 1287, 1215;

MS (FD) m/e 266 (M+);

UV (EtOH) 278nm (ε=5421) , 247 nm (ε=5655), 202 nm (6=22240).

Example 281 N-F2-(2-chlorophenvl) thvll-N'-T2-(5-methvl)pvridvll thiourea

A solution of l-(2-[2- chlorophenyl]ethyl)thiocarbamoyl imidazole (1.0 g, 3.76 mmol) and 2-amino-5-methylpyridine (0.41 g, 3.76 mmol) in i\.,iV-dimethylformamide (10 mL) was stirred at 90 ^* C for 16 h,

the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.92 g (80%) of the titled product: IR (KBr, cm" ¹ ) 3226, 1597, 1532, 1491, 1273, 1050; iH NMR -(300 MHz, DMSO-dg) δ 11.6 (br t, IH), 10.5 (s, IH) ,

7.9 (br s, IH), 7.6-7.0 (m, 6H) , 3.9 (q, 2H) , 3.1 (t, J=7

Hz, 2H), 2.2 (s, 3H);

MS (FD) m/e 305 (M ⁺ );

UV (EtOH) 298nm (.6=14145) , 268nm (6=21034), 249 nm (ε=15757), 202 nm (6=23053).

Anal. Calcd for CιsHι N3ClS: C, 58.91; H, 5.27; N, 13.74.

Found: C, 58.65; H, 5.39; N, 13.77.

Example 282 -r f2-f4-ethvl) hiazolvl)thiocarbamoyl! imidazole

A solution of l,l'-thiocarbonyldiimidazole (11.9 g, 60 mmol) and 2-amiπo(4-ethyl)thiazole (8.0 g, 60 mmol) in acetonitrile (250 mL) was stirred at room temperature for about 5 h. The resulting precipitate was collected by filtration to provide 12.0 g (85%) of the titled product. Tap. 198-200"C; IR (KBr, cπT ¹ ) 2970, 2637, 1609, 1529, 1461, 1398, 1357, 1226, 1262; iH NMR (300 MHz, DMSO-dg) δ 8.6 (s, IH) , 7.9 (s, IH) , 7.0

(s, IH), 6.9 (s, IH), 2.6 (q, J=7 Hz, 2H) , 1.2 (t, J=7 Hz, 3H) ;

MS (FD) m/e 238 (M+) ;

UV (EtOH) 361 nm (ε=11223), 290 nm (6=8828), 203 nm

(6=20303).

Anal. Calcd for C9H10N4S2: C, 45.36 H, 4.23; N, 23.51. Found: C, 45.51; H, 4.20; N, 23.53.

Exa ple 283

N-(2-.2-pvridvl!ethvl)-N ¹ - 12-(4-ethvl)thiazolvll thiourea A solution of l-[(2-[4- ethyl]thiazolyl)thiocarbamoyl] imidazole (1.00 g, 4.2 mmol) and 2-(2-aminoethyl)pyridine (0.51 g, 4.2 mmol) in N, N- dimethy1formamide (25 mL) was stirred at 90"C for 3 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.75 g (61%) of the titled product: IR (KBrv cm" ¹ ) 3163, 1557, 1524, 1222, 757; iH NMR (300 MHz, DMSO-dg) δ 11.3 (br s, IH) , 10.0 (br s,

IH), 8.5 (m, IH), 7.7 ( , IH) , 7.25 ( , 2H) , 6.6 (s, IH) , 3.9 (m, 2H), 3.05 (m, 2H) , 2.45 (q, J=7 Hz, 2H) , 1.05 (t, J=7 Hz, 3H); MS (FD) m/e 292 (M+); UV (EtOH) 292nm (6=17803), 261nm (6=12919), 201 nm (6=17809).

Anal. Calcd for Ci3Hι N4S2: C, 53.40 H, 5.51; N, 19.16. Found: C, 53.64; H, 5.51; N, 19.02.

Example 284 N-(2-.1-cvclohexenvl! thv )-N'- 12-(4-ethvl) hiazolvll thiourea A solution of l-[ (2-[4-ethyl]thiazolyl) thiocarbamoyl] imidazole (0.75 g, 3.15 mmol) and 2-(l- cyclohexenyl)ethylamine (0.39 g, 3.15 mmol) in N,N- dimethylformamide (15 mL) was stirred at 90 ^* C for 4 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.77g (83%) of the titled product: MP 155-156 ^* C; IR (KBr, cm" ¹ ) 3172, 2914, 1560, 1507, 1202, 710;

iH NMR (300 MHz, DMSO-dg) δ 11.5 (br s, IH) , 9.8 (br S, IH) , 6.6 (s, IH), 5.42 (s, IH) , 3.56 (q, J=7 Hz, 2H) , 2.45 (m, 2H), 2.16 (m, 2H), 1.9 (m, 4H) , 1.5 (m, 4H), 1.12 (t, J=7 Hz, 3H); MS (FD) m/e 295 (M+) ;

UV (EtOH) 291nm (6=19227) , 257nm (6=9628), 201 nm (6=15736).

Anal. Calcd for C1 H213S2: C, 56.91 H, 7.16; N, 14.22. Found: C, 57.20; H, 7.22; N, 14.16.

Example 285

N- 12-(2-chlorophenvl)ethvl1-_. ^■ - 12- (4-ethvl)thiazolvll thiourea

A solution of l-[(2-[4-ethyl]thiazolyl) thiocarbamoyl] imidazole (0.75 g, 3.15 mmol) and 2-(2- chlorophenyl)ethylamine (0.49 g, 3.15 mmol) in N,N- dimethylforma ide (15 mL) was stirred at 90 ^* C for 2 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl acetate to provide 0.85 g (83%) of the titled product: MP 153-155 ^* C; IR (KBr, cm" ¹ ) 3167, 3018, 1570, 1505, 1215,

749, 699; iH NMR (300 MHz, DMSO-dg) δ 11.65 (br s, IH) , 9.85 (br s,

IH), 7.5-7.2 (m, 4H) , 6.65 (s, IH) , 3.85 (m, 2H) , 3.05 (t, J=7 Hz, 2H), 2.55 (q, J=7 Hz, 2H) , 1.1 (t, J=7 Hz, 3H) ; MS (FD) m/e 325 (M ⁺ ) ;

UV (EtOH) 292nm (6=19154), 257nm (6=10451), 202 nm (6=24308).

Anal. Calcd for C1 H16N3S2CI: C, 51.60; H, 4.95; N, 12.87.

Found: C, 51.75; H, 4.98; N, 12.79.

Example 286 N- 12-(2-methoxyphenyl) thvll-N'- 12-(4-ethvl)thiazolvll thiourea A solution of l-[ (2-[4-ethyl]thiazolyl) 5 thiocarbamoyl] imidazole (0.70 g, 2.94 mmol) and 2-(2- methoxyphenyl)ethylamine (0.44 g, 2.94 mmol) in N,N- dimethylformamide (15 mL) was stirred at 95'C for 2 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl 10 acetate to provide 0.67 g (71%) of the titled product: MP 166-167.5 ^* C; IR (KBr, cm" ¹ ) 3173, 3025, 1528, 1248,

1209, 755, 677; iH NMR (300 MHz, DMSO-dg) δ 11.5 (br s, IH) , 9.85 (br s,

IH), 7.2-6.8 (m, 4H) , 6.57 (s, IH) , 3.7 (m, 5H) , 2.82 (t, 15 J=7 Hz, 2H) , 2.4 (q, J=7 Hz, 2H) , 1.06 (t, J=7 Hz, 3H) ; MS (FD) m/e 321 (M ⁺ ); UV (EtOH) 291nm (6=12114), 259nm (ε=6792), 201 nm (6=18914).

Anal. Calcd for C15H19N3OS2: C, 56.04; H, 5.96; N, 13.07. Found: C, 55.83; H, 6.00; N, 13.08. 20

Example 287 N- 12-(3-methoxyphenyl)ethvl1-N ¹ - 12-(4-ethv )thiazolvl 1 thiourea A solution of l-[ (2-[4-ethyl]thiazolyl) 25 thiocarbamoyl] imidazole (0.70 g, 2.94 mmol) and 2-(3- methoxyphenyl)ethylamine (0.44 g, 2.94 mmol) in N,N- dimethylformamide (15 mL) was stirred at 90 ^* C for 2 h, the reaction was cooled to room temperature and the solvent removed in vacuo. The residue was crystallized from ethyl 30 acetate to provide 0.76 g (80%) of the titled product:

* - MP 123-125'C;

IR (KBr, cm- ¹ ) 3167, 3027, 1587, 1207, 699; NMR (300 MHz, DMSO-dg) δ 11.5 (br s, IH) , 9.9 (br s, IH) ,

7.2-6.8 (m, 4H), 6.58 (s, IH) , 3.75 (m, 2H) , 3.67 (s, 3H) ,

2.84 (t, J=7 Hz, 2H), 2.45 (q, J=7 Hz, 2H) , 1.05 (t, J=7

Hz, 3H) ;

MS (FD) m/e 321 (M ⁺ ) ;

UV (EtOH) 292nm (6=19113), 258nm (6=10607), 202 nm (6=29289).

Anal. Calcd for C15H19N3OS2: C, 56.04; H, 5.96; N, 13.07. Found: C, 56.08; H, 5.96; N, 13.16.

Example 288 l-r(2-r4-cvanol thiazolvl)thiocarbamoyl1 imidazole

A solution of l,l'-thiocarbonyldiimidazole (3.2 g, 16 mmol) and 2-amino-4-cyanothiazole (2.0 g, 16 mmol) in acetonitrile (40 mL) was stirred at room temperature for 72 h and heated at 60 ^* C for 24 h. The resulting precipitate was collected by filtration to provide 2.74 g (73%) of the titled product: IR (KBr, cm ^-1 ) 3097, 2230; NMR (300 MHz, DMSO-dg) δ 11.99 (br s, IH) , 8.76 (s, IH) ,

8.67 (s, IH), 8.07 (s, IH) , 7.92 (s, IH) ; MS (FAB) m/e 236 (M+H) .

Example 289 N- 12- 12-chlorophenyl)ethvll-N- - 12-(4-cvano) hiazolvll thiourea

A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (0.66 g, 2.8 mmol) and 2-(2-chlorophenyl)ethylamine (0.45 g, 2.8 mmol) in N,N- dimethylformamide (15 mL) was stirred at 100 ^* C for 2 h.

The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.24 g (26%) of the titled product: mp 165-168'C; IR (KBr, cm" ¹ ) 3119, 2955, 2232, 1577, 1505,

1461, 1328, 1299, 1221, 1053, 826; iH NMR (300 MHz, DMSO-dg) δ 11.8 (br s, IH) , 8.5 (br s, IH) , 8.1 (s, IH), 7.2-7.4 (m, 4H) , 3.74 (m, 2H) , 2.98 (t, J=7

Hz, 2H);

MS (FD) m/e 322 (M ⁺ ) ;

UV (EtOH) 287nm (8=10082), 258 nm (ε=15462), 205 nm

(6=31601) .

Example 290

N-T2- ( -chlorophenyl)ethvll-N'-.2-M-ovano) hiazolvll thiourea

A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (0.66 g, 2.8 mmol) and 2-(3-chlorophenyl)ethylamine (0.44 g, 2.8 mmol) in iV.JV- dimethy1formamide (15 mL) was stirred at 90'C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from methylene chloride to provide 0.21 g (23%) of the titled product as a tan solid: mp 180-185'C; IR (KBr, cm ^"1 ) 2955, 2239, 1559, 1522, 1331, 1251, 1206, 1168, 823;

NMR (300 MHz, DMSO-dg) δ 11.8 (br s, IH) , 8.4 (br s, IH) , 8.1 (s, IH) , 7.1-7.3 (m, 4H) , 3 .71 (m» 2H) , 2 . 86 (t, J=7 Hz, 2H) ;

MS (FD) m/e 322 (M+) , 324; UV (EtOH) 287nm (ε=10684) , 258 nm (6=16406) , 207 nm

(6=33113).

Example 291 N- 12- ( - ethoxyphenyl) thvll-w- 12-(4-cvano)thiazolvll thiourea

A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (0.66 g, 2.8 mmol) and 2-(2-methoxyphenyl)ethylamine (0.46 g, 2.8 mmol) in jV.tf-dimethylformamide (15 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was. concentrated and the residue purified by chromatography on silica gel to provide 0.21 g (23%) of the titled product as a yellow solid: mp 159-161 ^* C;

IR (KBr, cm- ¹ ) 2937, 2235, 1566, 1454, 1301, 1243, 1208, 1173, 754; NMR (300 MHz, DMSO-dg) δ 11.8 (br s, IH) , 8.4 (br s, IH) , 8.1 (s, IH), 6.8-7.2 (m, 4H) , 3.73 (s, 3H) , 3.66 (m, 2H) ,

2.81 (t, J=7 Hz, 2H);

MS (FD) m/e 318 (M+) ;

UV (EtOH) 279nm (6=12102), 259 nm (6=16281), 203 nm

(6=33347).

Example 292 N- 12- ( -methoxyphenyl)ethvll-N'- 12-(4-cvano)thiazolvll thiourea A solution of l-[(2-[4- 5 cyano]thiazolyl)thiocarbamoyl] imidazole (0.66 g, 2.8 mmol) and 2-(3-methoxyphenyl)ethylamine (0.44 g, 2.8 mmol) in i\.,-V-dimethylformamide (15 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, 10 saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.21 g (23%) of the titled product* as a yellow εolid: mp 151-153'C; 15 IR (KBr, cm- ¹ ) 3065, 2235, 1564, 1515, 1295, 1250, 1209, 1155, 1058, 874, 768, 748, 684; iH NMR (300 MHz, DMSO-dg) δ 11.8 (br s, IH), 8.4 (br s, IH) ,

8.1 (s, IH) , 7.18 (m, IH) , 6.77 (m, 3H) , 3.68 (m, 5H) , 2.80 (t, J=7 Hz, 2H); 20 MS (FD) m/e 318 (M+) ;

UV (EtOH) 280nm (ε=11770), 258 nm (6=16613), 204 nm

(6=34785).

Example 293 25 N- 12- (1-cvclohexenvl )ethvll-N--f2- (4- cvano)thiazolvllthiourea A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (0.82 g, 3.5 mmol) and 2-(1-cyclohexenyl)ethylamine (0.45 g, 3.5 mmol) in N,N- 30 dimethylformamide (15 mL) was stirred at 90 ^* C for 1.5 h.

^• » * The reaction was cooled to room temperature, poured into

ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.27 g (26%) of the titled product as a pale yellow solid: mp 176-178 ^* C;

IR (KBr, cm- ¹ -) 3169, 3075, 2924, 2233, 1556, 1513, 1330, 1298, 1260, 1217, 1200, 1167, 1145, 983, 922; iH NMR (300 MHz, DMSO-dg) δ 11.87 (br s, IH) , 8.40 (br s, IH), 8.11 (s, IH), 5.42(br s, IH) , 3.52 (m, 2H) , 2.14 (t,

J=7 Hz, 2H), 1.90 (m, 4H) , 1.49 (m, 4H) ;

MS (FD) m/e 292 (M+) ;

UV (EtOH) 288nm (ε=11250), 258 nm (6=16113), 206 nm

(6=25473) Anal. Calcd for Ci3Hι N4S2: C, 53.40; H, 5.52; N, 19.16.

Found: C, 53.10; H, 5.55; N, 18.96.

Example 294 1-rf2-r-4-(3-chlorophenyl!thiazolvl)thiocarbamoyl! imidazole A solution of l,l'-thiocarbonyldiimidazole

(2.52g, 12 mmol) and 4-(3-chlorophenyl)-2-thiazoleamine (2.14 g, 12 mmol) in acetonitrile (35 mL) was stirred at room temperature for 30 hours. The resulting precipitate was collected by filtration to provide 2.77 g (72%) of the titled product: S (FAB) m/e 321 (M+H) .

Examole 295 N- r2- (2-chlorophenvl ) ethvl ! -N ^l - r2- r4- (3 - chlorophenvl) 1 ! hiazolvl thiourea A solution of l-[(2-[4-{3- chlorophenyl]thiazolyl)thiocarbamoyl] imidazole (0.92 g, 2.86 mmol) and 2-(2-chlorophenyl)ethylamine (0.46 g, 2.86 mmol) in iV,iV-dimethylformamide (15 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 1.0 g (86%) of the titled product as yellow needles: mp 193-195 ^* C; IR (KBr, cm" ¹ ) 3018, 1560, 1515, 1470, 1291, 1210, 1065, 935, 785, 757, 716; iH NMR (300 MHz, DMSO-dg) δ 11.66 (br s, IH) , 9.29 (br s,

IH), 7.79 (s, IH), 7.63 ( , 2H) , 7.35 (m, 4H) , 7.23 (m, 2H) , 3.83 ( , 2H) , 3.02 (t, J=7 Hz, 2H) ; MS (FD) m/e 407 (M+) , 409 (M+2);

UV (EtOH) 285nm (6=22709), 266 nm (ε=20608), 202 nm

(6=37861) .

Anal. Calcd for C18H15N3S2CI2: C 52.94; H, 3.70; N, 10.29. Found: C. 52.96; H, 3.74; N, 10.49.

Example 296 N-T2-(3-methoxyphenyl)ethvll-N'-r2-T4-(3- chlorophenyl)11thiazolyl thiourea A solution of l-[(2-[4-(3- chlorophenyl]thiazolyl)thiocarbamoyl] imidazole (0.92 g,

2.86 mmol) and 2-(3-methoxyphenyl)ethylamine (0.45 g, 2.86

mmol) in JY,l7 ^" -dimethylforιnamide (15 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.85 g (74%) of the titled product as a white solid: mp 183-185'C;

IR (KBr, cm~ ¹ )3172, 3024, 1569, 1515, 1466, 1319, 1287, 1260, 1220, 1067, 996, 775, 728, 604; ifi NMR (300 MHz, DMSO-dg) δ 11.66 (br s, IH) , 9.20 (br s,

IH), 7.81 (s, IH), 7.63 ( , 2H) , 7.35 ( , 2H) , 7.16 (m, IH), 6.73 (m, 3H), 3.77 (m, 2H) , 3.64 (s, 3H) , 2.86 (t, J=7 Hz, 2H); MS (FD) m/e 403 (M ⁺ ) , 405 (M+2);

UV (EtOH) 280nm (6=23880), 202 nm (6=42912).

Anal. Calcd for C19H18N3OS2CI: C, 56.49; H, 4.49; N, 10.40. Found: C, 56.62; H, 4.50; N, 10.58.

Example 297

N-.2-(1-cvclohexenvl) thvll-» ^■ - 2- i-f3- chlorophenvl)11 hiazolvl thiourea A solution of l-[(2-[4-(3- chlorophenyl]thiazolyl)thiocarbamoyl] imidazole (0.92 g, 2.86 mmol) and 2-(1-cyclohexenyl)ethylamine (0.37 g, 2.86 mmol) in (15 mL) was stirred at 90'C for 0.5 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was

crystallized from EtOAc to provide 0.7 g (65%) of the titled product as a white solid: mp 196-197"C;

IR (KBr, cm" ¹ ) 2939, 1557, 1514, 1469, 1287, 1202, 1062, 881, 784, 719, 661; iH NMR (300 MHz, DMSO-dg) δ 11.66 (br s, IH) , 9.17 (br s,

IH), 7.85 (s, IH), 7.76 (m, IH) , 7.61 (s, IH) , 7.37 (m,

2H), 5.41(br s, IH) , 3.60 (m, 2H) , 2.20 (t, J=7 Hz, 2H) ,

1.87 (m, 4H), 1.46 (m, 4H) ; MS (FD) m/e 377 (M ⁺ ) , 379 (M+2);

UV (EtOH) 285nm (6=23385), 232 nm (6=18756) , 202 nm

(6=31779)

Anal. Calcd for C18H20N3S2CI: C, 57.20; H, 5.33; N, 11.12.

Found: C, 57.04; H, 5.32; N, 11.09.

Example 298 1-r (2-r4-(3-nitrophenvllthiazolvl)thiocarbamovll imidazole

A solution of l^'-thiocarbonyldiimidazole (0.41g, 2.3mmol) and 4-(3-nitrophenyl)-2-thiazoleamine (0.5g, 2.3 mmol) in acetonitrile (25 mL) was stirred at room temperature for 72 h and heated at 60 ^* C for 72 h. The resulting precipitate was collected by filtration to provide 0.51 g (68%) of the titled product: MS (FAB) m/e 332 (M+H) . Anal. Calcd for C13H9N5O2S2: C, 47.12; H, 2.73; N, 21.13. Found: C, 47.35; H, 2.69; N, 21.03.

Exa ple 299

N-T2-(1-cvclohexenvl)ethvll-N-- 12- 14-(3- ni ronhenvl)11 hiazolvl thiourea

A solution of l-[(2-[4-C3- nitrophenyl]thiazolyl)thiocarbamoyl] imidazole (0.5g, 1.5 mmol) and 2-(1-cyclohexenyl)ethylamine (0.19 g, 1.5 mmol) in j5r,iJ7-dimethylformamide (15 mL) was stirred at 90 ^* C for 0.75 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.37 g (63%) of the titled product as a yellow solid: mp 218-221 ^* C; IR (KBr, cm" ¹ ) 3165, 3017, 2922, 1569, 1513, 1465, 1352, 1265, 1216, 1167, 1065, 877, 788, 713, 676; iH NMR (300 MHz, DMSO-dg) δ 11.76 (s, IH) , 8.85 (br s, IH) ,

8.61 (s, IH), 8.25 (d, J=8 Hz, IH), 8.11 (d, J=8 Hz, IH) ,

7.77 (s, IH), 7.67 (m, IH) , 5.42(br s, IH) , 3.58 (m, 2H) , 2.20 (t, J=7 Hz, 2H), 1.89 (m, 4H) , 1.46 (m, 4H) ; MS (FD) m/e 388 (M ⁺ ) ;

UV (EtOH) 286nm (6=22903), 265nm (6=23582), 237 nm (6=17806),

202 nm (6=24107)

Anal. Calcd for CI8H20N4O2S2: C, 55.65; H, 5.19; N, 14.42. Found: C, 55.45; H, 5.14; N, 14.51.

Example 3Q0

N- 12-(4-ghlorophenvl) thvl1-N'-T2-(4-cvano) hiazolvl 1 thiourea A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (0.71 g, 3.0 mmol)

and 2-(4-chlorophenyl)ethylamine (0.48 g, 3.0 mmol) in JV,iV- dimethylformamide (20 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.4 g (41%) of the titled product as a tan solid: mp 188-190 ^* C; IR (KBr, cm ^"1 ) 3396, 3110, 2226, 1586, 1518, 1490, 1353, 1248, 1087, 808, 766, 649, 517; NMR (300 MHz, DMSO-dg) δ 11.8 (s, IH) , 8.43 (br s, IH) ,

8.12 (s, IH), 7.33 (d, J= 8Hz, 2H) , 7.24 (d, J= 8Hz, 2H) , 3.69 ( , 2H) , 2.84 (t, J=7 Hz, 2H) ; MS (FD) m/e 322 (M+) ;

UV (EtOH) 287nm (6=10775) , 257 nm (6=17025), 206 nm (6=31350) .

Example 301 N- 12-(4-methoxyphenyl)ethvll-N ¹ - 12-(4-cvano)thiazolvll thiourea

A solution of l-[(2-[4- cyano]thiazolyl) hiocarbamoyl] imidazole (0.9 g, 3.8 mmol) and 2-(4-methoxyphenyl)ethylamine (0.59 g, 3.8 mmol)- in JV,JV-dimethylformamide (25 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.66 g (55%) of the titled product as a yellow solid:

mp 185-190"C;

IR (KBr, cm" ¹ ) 3208, 3064, 2236, 1547, 1514, 1259, 1201,

1164, 1033, 886, 775, 748, 680; NMR (300 MHz, DMSO-dg) δ 11.8 (br s, IH), 8.4 (br s, IH) ,

8.1 (s, IH), 7.13 (d, J= 9Hz, 2H) , 6.83 (d, J= 9Hz, 2H),

3.68 (s, 3H), 3.64 (m, 2H) , 2.77 (t, J=7 Hz, 2H) ;

MS (FD) m/e 318 (M+) ;

UV (EtOH) 284nm (6=12158), 258 nm (6=17248), 204 nm

(6=30994) .

Example 302 1-r(2-benzimidazolvl) hiocarbamoyl1 imidazole A solution of l,l*-thiocarbonyldiimidazole (8.91g, 50 mmol) and 2-aminobenzimidazole (6.66g, 50 mmol) in acetonitrile (50 mL) was stirred at room temperature for 19 hours. The resulting precipitate was collected by filtration to provide 8.92 g (73%) of the titled product: IR (KBr, cm ^-1 ) 3058, 2621, 1623, 1580, 1509, 1469, 1445, 1355, 1290, 1252, 1212, 1153, 1099, 1081, 1048, 925, 898, 746, 659; iH NMR (300 MHz, DMSO-dg) δ 13.24 (br s, 2H) , 8.52 (s, IH) ,

7.87 (s, IH), 7.57 (m, 2H) , 7.33 (m, 2H) , 6.96 (s, IH) ; MS (FAB-) m/e 244 (M+l);

UV (EtOH) 351nm (6=18204), 283nm (ε=13099), 227 nm (ε=17339), 204 nm (6=31915) .

Example 3Q3

N- 2-(2-chlorophenvl) thvll-N'-(2-benzimidazolyl) thiourea A solution of l-[(2- benzimidazolyl) hiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(2-chlorophenyl)ethylamine (0.81 g, 5.0 mmol) in N,N-

dimethylformamide (20 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.67 g (40%) of the titled product as a white solid: mp 166-169"C;

IR (KBr, cm- ¹ ) 3235, 1656, 1554, 1459, 1248, 1224, 1192, 754, 737, 629; iH NMR (300 MHz, DMSO-dg) δ 11.95 (br s, IH) , 10.82 (br s,

IH), 7.42 (m, 5H), 7.25 ( , 2H) , 7.12 (m, 2H) , 3.83 (m, 2H) , 3.05 (t, J=7 Hz, 2H); MS (FD) ^" m/e 330 (M ⁺ ); UV (EtOH) 301nm (ε=18044), 293 nm (ε=18559), 266 nm

(6=11113), 260nm (6=10441), 239 nm (6=8428), 206 nm (6=27620).

Example 304 N- 12- (3-chlorophenyl)ethvll-N'-(2-benzimidazolvl) thiourea A solution of l-[(2- benzimidazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(3-chlorophenyl)ethylamine (0.79 g, 5.0 mmol) in N,N- dimethy1formamide (20 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.24 g (14%) of the titled product as a white ^' solid: mp 171-177-C;

IR (KBr, cm" ¹ ) 3387, 1574, 1539, 1461, 1426, 1237, 1175,

734, 699, 477; NMR (300 MHz, DMSO-dg) δ 11.18 (m, 2H), 7.28 (m, 8H) ,

7.06 (m, IH), 3.83 (m, 2H) , 2.94 (t, J=7 Hz, 2H) ; ^' MS (FD) m/e 330 (M ⁺ );

UV (EtOH) 293 nm (6=17219), 266 nm (ε=9969), 260nm (6=9196), 240 nm (6=8196) , 203 nm (6=27483) .

Example 305 N-r2-( -ch1orophenvl)ethvl1-N'-(2-benzimidazolvl) thiourea

A solution of l-[(2- benzimidazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(4-chlorophenyl)ethylamine (0.79 g, 5.0 mmol) in N,N- dimethylforma ide (20 mL) was stirred at 90 °C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 1.31 g (79%) of the titled product as a white solid: mp 173-182'C;

IR (KBr, cm" ¹ ) 3168, 3031, 1668, 1562, 1494, 1470, 1327, 1221, 1174, 1090, 817, 777, 742, 657, 526, 457; iH NMR (300 MHz. DMSO-dg) δ 12.18 (br s, IH) , 10.36 (br s, IH), 7.52 (m, 2H), 7.22-7.38 (m, 7H), 3.76 (m, 2H) , 2.89

(t, J=7 Hz, 2H);

MS (FD) m/e 330 (M ⁺ ) , 332 (M+2);

UV (EtOH) 301nm (ε=21672) , 293 nm (6=22296), 266 nm

(6=13408), 260nm (6=12591), 206 nm (6=29310).

Examole 306

N-T2-(2-methoxyphenyl)ethvll-N'-(2-benzimidazolvl) thiourea A solution of l-[(2- benzimidazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(2-methoxyphenyl)ethylamine (0.82 g, 5.0 mmol) in i\.,iV-dimethylformamide (20 mL) was stirred at 90 ^* C for 2 h.

The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.62 g (38%) of the titled product as a white solid: mp 176-184 ^* C;

IR (KBr, cm" ¹ ) 3035, 1644, 1539, 1495, 1463, 1331, 1246, 1203, 1025, 750, 454; iH NMR (300 MHz, DMSO-dg) δ 11.95 (br s, IH) , 10.32 (br s,

IH), 7.52 (m, 2H) , 7.20 ( , 5H) , 6.88 (m, 2H) , 3.75 (s, 3H) 3.70 (m, 2H), 2.88 (t, J=7 Hz, 2H) ; MS (FD) m/e 326 (M ⁺ ); UV (EtOH) 301nm (ε=20950) , 293 nm (6=21508), 265 nm (6=14212), 239 nm (6=9552), 204 nm (6=30277).

Example 307

N- 12-( -methoxyphenyl)ethvll-N'- (2-benzimidazolvl) thiourea A solution of l-[(2- benzi idazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(3-methoxyphenyl)ethylamine (0.78 g, 5.0 mmol) in iV,JV-dimethylformamide (20 mL) was stirred at 90'C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer

was concentrated and the resultant solid was purified by chromatography on silica gel to provide 1.2 g (73%) of the titled product as a white solid: mp 161-167"C; IR (KBr, cm" ¹ ) 2932, 1574, 1541, 1460, 1230, 1152, 1016, 737, 694, 577, 461;

iH NMR (300 MHz, DMSO-dg) δ 11.14 (br s, IH) , 10.95 (br ^' s,

IH), 7.30 (m, 2H), 7.16 (m, IH) , 7.06(m, 2H) , 6.87 (m, 2H) , 6.75 (m, 2H), 3.83 ( , 2H) 3.80 (s, 3H) , 2.89 (t, J=7 Hz,

2H);

MS (FD) m/e 326 (M ⁺ ) ;

UV (EtOH) 301nm (6=23757), 293 nm (6=24495), 265 nm

(6=16068), 260 nm (6=14682), 239 nm (ε=11477), 204 nm (6=36963).

Example 308 N- 2-. -methoxvphenvl)ethvl1-W- (2-benzimidazolvl) thiourea A solution of l-[(2- benzimidazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(4-methoxyphenyl)ethylamine (0.77 g, 5.0 mmol) in 2,27-dimethylformamide (20 mL) was stirred at 90 ^* C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel to provide 1.1 g (67%) of the titled product as a white solid: mp 166-172 ^* C; IR (KBr, cm ^"1 ) 3416, 3195, 3065, 1575, 1543, 1511, 1464, 1243, 1176, 1037, 747, 442;

iH NMR (300 MHz, DMSO-dg) δ 11.11 (br s, IH) , 10.95 (br s, IH), 7.36 (m, 2H) , 7.20 (d, J=8 Hz, 2H) , 7.08 (m, 3H) , 6.82 (d, J=8 Hz, 2H) , 3.78 (m, 2H) 3.67 (s, 3H) , 2.85 (t, J=7 Hz, 2H); MS (FD) m/e 326 (M+) ;

UV (EtOH) 301nm (6=24618), 293 nm (6=25247), 265 nm (6=16716), 260 nm (6=15557), 203 nm (8=35060).

Example 309 N- 12-(1-cvclohexenvl)ethvll-N'-(2-benzimidazolyl) thiourea

A solution of l-[(2- benzimidazolyl)thiocarbamoyl]imidazole (1.22 g, 5.0 mmol) and 2-(1-cyclohexenyl)ethylamine (0.64 g, 5.0 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.82 g (55%) of the titled product as yellow needles: mp 178-180'C;

IR (KBr, cm- ¹ ) 3182, 2922, 1576, 1540, 1421, 1271, 1232, 1033, 740, 450; iH NMR (300 MHz, DMSO-dg) δ 11.08 (br s, IH) , 11.07 (br s, IH), 11.02 (br s, IH) , 7.36 (m, 2H) , 7.06(m, 2H) , 5.51 (s, IH), 3.66 (m, 2H) , 2.21 (t, J=7 Hz, 2H) , 1.93 (m, 4H) , 1.51 (m, 4H); S (FD) m/e 300 (M ⁺ ) ;

UV (EtOH) 301nm (6=25279), 292 nm (6=26214), 265 nm (6=15965), 259 nm (6=14734), 239 nm (6=11012), 206 nm (6=30007).

Anal. Calcd for CιgH2θ 4S: C, 63.97; H, 6.71; N, 18.65. Found: C, 64.25; H, 6.99; N, 18.63.

Example 310 -rf2-pvridvl) hiocarbamoyl1 imidazole A solution of l,l'-thiocarbonyldiimidazole (9.9 g, 50 mmol) and 2-aminopyridine (4.75 g, 50 mmol) in acetonitrile (50 mL) was stirred at room temperature for 72 h. The resulting solution was evaporated to a black oil and triturated with hexane. The remaining oily residue was placed under vacuum to provide 13.6 g of crude titled product as a black solid: NMR (300 MHz, DMSO-dg) δ 8.89 (br s, IH) , 8.58 (m, IH) ,

8.35 (m, IH), 7.80 (m, 2H), 7.40 (m, IH), 7.15 (m, IH), 6.95 (m, IH);

MS (FAB) m/e 204 (M+, weak)

Example 311

N- 12- (2-chlorophenvl ethvl1-N'-f2-πvridvl) hiourea A solution of l-[ (2-pyridyl)thiocarbamoyl] imidazole (1.02 g, 5.0 mmol) and 2-(2- chlorophenyl)ethylamine (0.81 g, 5.0 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90 ^* C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant oil was purified by

chromatography on silica gel to provide 0.21 g (14%) of the titled product as a yellow solid: mp 116-122'C

IR (KBr, cm" ¹ ) 3235, 1606, 1592, 1558, 1537, 1477, 1439, 1332, 1259, 1234, 1212, 1185, 1150, 1088, 1057, 861; iH NMR (300 MHz, DMSO-dg) δ 11.63 (m, IH) , 10.53 (s, IH) ,

8.03 (m, IH), 7.68 (m, IH) , 7.41 (m, 2H) , 7.30 (m, 2H) ,

7.07 (m, IH), 6.96 (m, IH) , 3.84 (m, 2H) , 3.04 (t, J=7 Hz,

2H); MS (FD) m/e 291 (M ⁺ );

UV (EtOH) 293 nm (6=14959), 266 nm (ε=15723), 246nm

(6=15174), 201 nm (6=23340).

Example 312 2-(2.6-Difluorophenyl)ethylamine

2,6-Difluorophenylacetonitrile (15.8g, 100 mmol)was dissolved in tetrahydrofuran (75 mL) at room temperature. The solution was cooled in an ice bath and borane-THF complex (lOOmL, 100 mmol) was added dropwise over 15 minutes under nitrogen atmosphere. The ice bath was removed after borane addition was complete and the mixture was stirred at room temperature for 23 hours under nitrogen atmosphere. Saturated aqueous ammonium chloride solution (20 mL) was added dropwise with stirring over 30 minutes. The reaction mixture was filtered through diatomaceous earth, concentrated to an oil, redissolved in ethyl acetate/water, and adjusted to pH 1.0 with concentrated hydrochloric acid. The mixture was filtered through diatomaceous earch and the ethyl acetate layer extracted with IN hydrochloric acid (4 x 10 mL) . The combined acidic aqueous extracts were washed with ethyl

acetate (2 x 50 ml) . Solid sodium chloride was added to the acidic aqueous extracts, adjusted to pH 9.0 with solid sodium bicarbonate and 5N sodium hydroxide solution, and the mixture extracted with methylene chloride (7 x 50 mL) . The combined methylene chloride extracts were washed with brine solution, dried over anhydrous sodium sulfate, filtered, and concentrated to yield 10.6g (68%) of the titled product as a nearly colorless oil: IR (KBr, cm" ¹ ) 2967, 2876, 1626, 1590, 1469, 1265, 1236, 1213, 1157, 1128, 1085, 1051, 1016, 956, 843; iH NMR (300 MHz, CDCI3) δ 7.13 (m, IH) , 6.83 (m, 2H) , 2.89

( , 2H), 2.80 (t, J=7 Hz, 2H) , 1.19 (s, 2H); MS (FD) m/e 157 (M+, weak); UV (EtOH) 265nm (6=650), 260nm (6=674) , 204nm (6=7922) ; TITRATION (66% DMF/H2O) pKa 9.06

Anal. Calcd for C8H9F2 : C, 61.14; H, 5.77; N, 8.91. Found: C, 60.88; H, 5.88; N, 8.63.

Example 313 N- 2- 12.6-difluorophenyl) thvll-N-- 12-(4- ethvl)thiazolvll hiourea A solution of 2-(2,6- difluorophenyl)ethylamine(0.16 g, 1 mmol) and l-[(2-[4- ethyl]thiazolyl) thiocarbamoyl] imidazole (0.24g, 1 mmol) in iV,-V-dimethylformamide (15 mL) was stirred at 90 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.29 g (89%) of the titled product as a pale yellow solid:

mp 157-158'C;

IR (KBr, cm" ¹ ) 3178, 2972, 1584, 1502, 1469, 1340, 1351,

1293, 1267, 1212, 1075, 1014, 953, 787, 726, 672; iH NMR (300 MHz, DMSO-dg) δ 11.54 (br s, IH) , 9.75 (br s, IH), 7.29 (m, IH) , 7.01 (m, 2H) , 6.58 (s, IH) , 3.77 (m,

2H) , 2.92 (t, J=7 Hz, 2H) , 2.45 (q, J=8 Hz, 2H) , 1.05 (t,

J=8 Hz, 3H) ;

MS (FD) m/e 327 (M ⁺ ) ;

UV (EtOH) 292nm (ε=18786), 257nm (6=10109), 202nm (6=19042) Anal. Calcd for C14H15F2N3S2: C, 51.36; H, 4.62; N, 12.83. Found: C, 51.60; H, 4.78; N, 13.08.

Example 314 N- 12-(2.6-di luorophenyl)ethvll-N'-(2-pvridvl)thiourea A solution of 2-(2,6-difluorophenyl)ethylamine

(0.43 g, 2.7 mmol) and l-[ (2-pyridyl)thiocarbamoyl] imidazole (0.55 g, 2.7 mmol) in _V,w-dimethylformamide (20 mL) was stirred at 90 ^* C for 27 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant oil was purified by chromatography on silica gel to provide 0.08 g (10%) of the titled product as a pale yellow solid: mp 157-160'C;

IR (KBr, cm ^"1 ) 3226, 1605, 1539, 1466, 1332, 1260, 1236,

1188, 1100, 974, 899, 861, 774, 725, 635, 516; iH NMR (300 MHz, DMSO-dg) δ 11.68 (br s, IH) , 10.53 (br s,

IH), 7.99 ( , IH) , 7.70 ( , IH) , 7.28 (m, IH) , 7.04 (m, 4H) , 3.82 (m, 2H) , 2.97 (t, J=7 Hz, 2H) ;

MS (FD) m/e 293 (M ⁺ ) ;

UV(EtOH) 292nm (6=15506), 266nm (6=16020), 245nm (ε=14709)

Example 315 1- 1 12- 12 . -di luorophenyl) thvl)thiocarbamoyl1 imidazole

A solution of 1,1'-thiocarbonyldiimidazole (9.5 g, 48 mmol) and 2-(2,6-difluorophenyl)ethylamine (7.54 g, 48 mmol) in acetonitrile (100 mL) was stirred at room temperature for 20 h. The solution was concentrated under reduced pressure and the resulting precipitate was collected by filtration and triturated with hexane to provide 16 g of crude titled product as a brown solid: IR (KBr, cm- ¹ ) 3129, 1565, 1468, 1355, 1259, 1203, 1120, 1065, 1031, 937, 900, 827, 787, 751, 664, 621, 499; ^X H NMR (300 MHz, DMSO-d6) δ 10.50 (br s, IH) , 8.29 (s, IH) ,

7.71 (s, IH), 7.35 (m, IH) , 7.04 (m, 3H) , 3.85 (m, 2H) , 3.0 (m, 2H) ;

MS (FAB) m/e 268 (M+H); UV(EtOH) 280nm (6=4068), 250nm (6=4341) , 2Oln (6=15062)

Example 316 N- 12-(1-cvclohexenvl)ethvl1-N'- 12- 16- chloro)pyrazinyl1 hiourea

A solution of 2-amino-6-chloropyrazine (2.59 g, 20 mmol) and 2-(l-cyclohexenyl)ethylisothiocyanate (3.34 g, 20 mmol) in N,jV-dimethylformamide (25 mL) was stirred at 95 °C for 27 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was

purified by chromatography on silica gel and crystallized from EtOAc to provide 0.44 g (7%) of the titled product as white needles: mp 170-171'C; IR (KBr, cm- ¹ ) 3207, 2926, 1584, 1514, 1414, 1295, 1161,

1005, 866, 714, 459; iH NMR (300 MHz, DMSO-dg) δ 11.08 (br s, IH) , 10.02 (br s,

IH), 8.49 (s, IH), 8.29 (s, IH) , 5.48 (br s, IH) , 3.64 ( , 2H), 2.21 (t, J=7 Hz, 2H), 1.90 (m, 4H) , 1.49 (m, 4H) ; MS (FD) m/e 296 (M ⁺ ) , 298 (M+2);

UV (EtOH) 327nm (6=12429), 266 nm (8=17577)

Anal. Calcd for C13H17N4SCI: C, 52.60; H, 5.77; N, 18.87.

Found: C, 52.89; H, 5.89; N, 19.11.

E ample 317

N- 12- (2.6-difluorophenyl) thvll-N'- 12-(6- ethy1) yridyl1thiourea

A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (0.53 g, 2 mmol) and 2-amino-6-methylpyridine (0.22g, 2 mmol) in iV.iV- dimethy1formamide (20 mL) was stirred at 90 ^* C for 3 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.14 g (23%) of the titled product as nearly colorless prisms: mp 187-189 ^* C;

IR (KBr, cm ^"1 ) 3195, 1612, 1544, 1468, 1451, 1380, 1293, 1269, 1230, 1192, 1160, 1072, 950, 788, 722, 635, 501;

iH NMR .(300 MHz, DMSO-dg) δ 11.83 (br s, IH) , 10.44 (br s, IH), 7.56 (t, J=8 Hz, IH), 7.26 (m, IH), 6.98 (m, 2H) , 6.87 (d, J=8 Hz, IH), 6.79 (d, J=8 Hz, IH) , 3.87 (m, 2H) , 2.94 (t, J=7 Hz, 2H), 2.11 (s, 3H); MS (FD) m/e 307 (M ⁺ );

UV(EtOH) 296nm (6=12052), 265nm (ε=10578), 246nm (6=10257)

Anal. Calcd for C15H15F2N3S: C, 58.62; H, 4.92; N, 13.67. Found: C, 58.35; H, 4.98; N, 13.39.

Example 318

N-T2-(1-cvclohexenvl)ethvll-N- - 12-(3.5- dimethyl) yrazinyl1 hiourea

A solution of 2-amino-3,5-dimethylpyrazine (0.62 g, 5 mmol) and 2-(l-cyclohexenyl)ethylisothiocyanate (0.84 g, 5 mmol) in iV,27-dimethylformamide (20 mL) was stirred at 90 ^* C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant oil was purified by chromatography on silica gel to provide 0.27 g (19%) of the titled product as an off-white solid: mp 100-103 ^* C;

IR (KBr, cπr ¹ ) 3387, 2929, 1515, 1329, 1214, 1164, 1014, 966, 907; iH NMR (300 MHz, DMSO-d6) δ 10.57 (br s, IH) , 9.12 (br s,

IH), 7.91 (s, IH), 5.44 (br s, IH) , 3.61 (m, 2H), 2.47 (s, 3H), 2.35 (s, 3H), 2.18 (t, J=7 Hz, 2H), 1.90 (m, 4H) , 1.48 (m, 4H); S (FD) m/e 290 (M ⁺ ) ;

UV (EtOH) 320nm (6=11659), 265 nm (©=16153). 201 nm (6=11795)

Anal. Calcd for C15H22 4S: C, 62.03; H, 7.63; N, 18.29. Found: C, 62.06; H, 7.65; N, 18.58.

Example 319 N- 12- (2 . -difluorophenyl)ethvll-N- - 12-(5- trifluoromethyl)pvridvl1thiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (1.07 g, 4 mmol) and 2-amino-5-trifluoromethylpyridine (0.65 g, 4 mmol) in N,N-dimethylformamide (20 mL) was stirred at 95 ^* C for 25 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.26 g (18%) of the titled product as a white solid: mp 148-152 ^* C; IR (KBr, cm- ¹ ) 3165, 3033, 1619, 1600, 1548, 1470, 1332, 1248, 1189, 1160, 1138, 1106, 1079, 964, 886, 776, 669, 603, 435; iH NMR (300 MHz, DMSO-dg) δ 11.42 (br s, IH) , 10.94 (br s,

IH), 8.36 (s, IH), 8.08 (m, IH) , 7.28 ( , 2H) , 7.02 (m, 2H), 3.82 (m, 2H) , 2.98 (t, J=7 Hz, 2H) ;

MS (FD) m/e 361 (M+) ;

UV(EtOH) 297nm (6=18455), 253nm (6=14782) , 2Olnm (6=15765)

Anal. Calcd for C15H12F5N3S: C, 49.86; H, 3.35; N, 11.63.

Found: C, 49.59; H, 3.28; N, 11.35

Examole 320 N- 12- 12 .6-difluorophenyl) thvll-N'- 12-(5- chloro)pvridvl1 hiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl] imidazole (1.07 g, 4 mmol) and 2-amino-5-chloropyridine (0.53 g, 4 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90'C for 22 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.65 g (50%) of the titled product as a tan solid: mp 172-175 ^* C; IR (KBr, cm" ¹ ) 3233, 1597, 1557, 1529, 1468, 1340, 1308, 1265, 1231, 1190, 1112, 1072, 950, 857, 834; iH NMR (300 MHz, DMSO-dg) δ 11.19 (m, IH) , 10.67 (s, IH) ,

8.03 (s, IH), 7.82 (m, IH) , 7.30 (m, IH) , 7.13 (m, IH) , 7.03 (m, 2H), 3.79 (m, 2H) , 2.96 (t, J=7 Hz, 2H) ; MS (FD) m/e 327 (M ⁺ ) , 329 (M+2) ;

UV (EtOH) 304nm (6=13180), 274nm (ε=23154) , 253 nm (6=15998), 201 nm (ε=19019)

Example 321 N- 12- 12.6-di luorophenyl)ethvl1-W- 12-.5- ethvl) vridvl1 hiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (1.33 g, 5 mmol) and 2-amino-5-methylpyridine (0.54 g, 5 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90 ^* C for 7 h. The reaction was cooled to room temperature, poured into ethyl

acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.83 g (86%) of the titled product as yellow crystals: mp 195-196'C;

IR (KBr, cm- ¹ ) 3230, 1611, 1535, 1492, 1468, 1334, 1274, 1236, 1190, 1111, 1065, 957, 821, 777, 716, 657, 608, 513; iH NMR (300 MHz, DMSO-dg) δ 11.59 (br s, IH) , 10.44 (br s, IH), 7.83 (br s, IH) , 7.53 (d, J=8 Hz, IH) , 7.30 ( , IH) , 7.02 (m, 3H), 3.80 (m, 2H) , 2.96 (t, J=7 Hz, 2H) , 2.16 (s, 3H);

MS (FD) m/e 307 (M+) ; UV(EtOH) 297nm (ε=5129), 268nm (ε=7508) , 247nm (ε=5383) Anal. Calcd for C15H15F2N3S: C, 58.62; H, 4.92; N, 13.67. Found: C, 58.36; H, 4.98; N, 13.73.

Example 322 N- 12- 12.6-difluorophenyl)ethvll-N'- 12-(5- bromo)pvrazinvl1thiourea

A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl] imidazole (1.33 g, 5 mmol) and 2-amino-5-bromopyrazine (0.87 g, 5 mmol) in N, N- dimethy1formamide (20 mL) was stirred at 95 ^* C for 26 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.31 g (17%) of the titled product as a white solid: mp 175-178 ^* C;

IR (KBr, cm" ¹ ) 3200, 1596, 1560, 1526, 1469, 1441, 1324,

1259, 1179, 1161, 1114, 1012, 962, 899, 874, 788, 780, 667,

601; NMR (300 MHz, DMSO-dg) δ 10.98 (br s, IH) , 10.51 (br s, IH), 8.33 (s, IH), 8.24 (s, IH) , 7.31 (m, IH) , 7.04 ( , 2H), 3.81 (m, 2H), 2.97 (t, J=7 Hz, 2H) ; MS (FD) m/e 372 (M ⁺ ) , 374 (M+2) ; UV (EtOH) 333nm (ε=10125) , 275nm (ε=22570) , 201 nm (ε=16801)

Anal. Calcd for Ci3HuBrF2N4S: C, 41.84; H, 2.97; N, 15.01. Found: C, 42.10; H, 3.12; N, 14.73.

Example 323

N-F2-(2,6-difluorophenyl) thyl!-N'- \2-(6- ethy1) yridyl]thiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (1.33 g, 5 mmol) and 2-amino-6-ethylpyridine (0.61 g, 5 mmol) in JV,iV- dimethylformamide (20 mL) was stirred at 95 ^* C for 21 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.63 g (39%) of the titled product as dense yellow crystals: mp 147-148 ^* C;

IR (KBr, cm" ¹ ) 2972, 1609, 1541, 1468, 1344, 1292, 1265,

1225, 1155, 1073, 951, 804, 786, 727, 692, 635, 501; NMR (300 MHz, DMSO-dg) δ 11.97 (m, IH) , 10.48 (br s, IH) ,

7.59 (t, J=8 Hz, IH), 7.27 (m, IH) , 6.98 (m, 2H) , 6.89 (d.

J=8 Hz, IH), 6.80 (d, J=8 Hz, IH) , 3.87 (m, 2H) , 2.95 (t, J=7 Hz, 2H), 2.44 (q, J=8 Hz, 2H) , 0.93 (t, J= 8 Hz, 3H) ; MS (FD) m/e 321 (M+) ; UV(EtOH) 296nm (6=17512), 266nm (6=15047) , 246nm (6=14627) , 201nm (ε=16211)

Anal. Calcd for Cι Hi7F2N3S: C, 59.80; H, 5.33; N, 13.07. Found: C, 60.04; H, 5.38; N, 13.22.

Example 324 N- 12- 12 .6-difluorophenyl) thvll-N'- 12-(6- chloro) yrazinyl!thiourea

A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl] imidazole (4.0 g, 15 mmol) and 2-amino-6-chloropyrazine (1.96 g, 15 mmol) in -V,iV-dimethylformamide (25 mL) was stirred at 95 ^* C for 18 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.7 g (14%) of the titled product as a light yellow solid: mp 175-180'C;

IR (KBr, cm ^-1 ) 3232, 1588, 1512, 1468, 1414, 1296, 1240, 1163, 1097, 1004, 981, 869, 777, 714, 659, 459; NMR (300 MHz, DMSO-dg) δ 11.07 (br s, IH) , 10.07 (br s,

IH), 8.50 (s, IH), 8.28 (s, IH) , 7.28 (m, IH) , 7.00 (m,

2H) , 3.85 ( , 2H) , 2.95 (t, J=7 Hz, 2H) ;

MS (FD) m/e 328 (M ⁺ ) , 330 (M+2);

UV (EtOH) 327nm (6=10851), 265nm (6=14817), 201 nm (ε=16442)

Example 325 N-.2-(2-πyridyl)ethv 1-N'- 12-(4-cvano)thiazolvll thiourea A solution of l-[(2-[4- cyano]thiazolyl)thiocarbamoyl] imidazole (2.35 g, 10 mmol) and 2-( -pyridyl)ethylamine (1.29 g, 10 mmol) in N,N- dimethylformamide (25 mL) was stirred at 95 ^* C for 2 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel to provide 0.4 g (14%) of the titled product as a yellow solid: mp 160 ^* C;

IR (KBr, cm" ¹ ) 3165, 3100, 2996, 2234, 1540, 1489, 1433, 1305, 1266, 1219, 1159, 1132, 999, 904, 817, 758, 574, 435; iH NMR (300 MHz, DMSO-dg) 811.88 (br s, IH) , 8.67 (br s,

IH), 8.49 (d, J=4 Hz, IH), 8.11 (s, IH) , 7.69 (m, IH) , 7.23 (m, 2H), 3.87 ( , 2H) , 3.01 (t, J=7 Hz, 2H) ; MS (FD) m/e 289 (M+) ;

UV (EtOH) 288nm (6=10826) , 257 nm (6=19925) , 205 nm (6=28658) .

Example 326 N- 2- 12.6-difluorophenyl)ethvll-N'-T2-(4- methyl)pyridy 1thiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (1.33 g, 5 mmol) and 2-amino-4-methylpyridine (0.54 g, 5 mmol) in N,N- dimethylformamide (20 mL) was stirred at 90 ^* C for 3 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer

was concentrated and the resultant solid was crystallized from EtOAc to provide 0.49g (32%) of the titled product as yellow needles: mp 168-170 ^* C; IR (KBr, cm" ¹ ) 3233, 1616, 1536, 1465, 1335, 1262, 1191,

1104, 959, 815, 783, 719, 653, 442;

■T-H NMR (300 MHz, DMSO-dg) δ 11.74 (br S, IH) , 10.44 (br s,

IH), 7.85 (d, J=5 Hz, IH) , 7.27 (m, IH) , 7.02 (m, 2H) , 6.88

(s, IH), 6.80 (d, J=5 Hz, IH), 3.80 (m, 2H) , 2.96 (t, J=7 Hz, 2H) , 2.20 (s, 3H) ;

MS (FD)-m/e 307 (M ⁺ ) ;

UV(EtOH) 290nm (6=16210), 266nm (6=15920), 246nm (ε=13211) ,

202nm (ε=13211)

Example 327

N- 12- (2.6-difluorophenyl) thvll-N'-T2- (4- ethyl)pyridyl1thiourea

A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl]imidazole (1.33 g, 5 mmol) and 2-amino-4-ethylpyridine (0.61 g, 5 mmol) in N,N- dimethylformamide (20 mL) was stirred at 95"C for 3 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was crystallized from EtOAc to provide 0.32 g (20%) of the titled product as a light brown solid: mp 140-142 ^* C;

IR (KBr, cm" ¹ ) 2939, 1616, 1590, 1536, 1469, 1341, 1267, 1189, 1104, 1064, 960, 868, 826, 781, 759, 721, 668, 652;

NMR (300 MHz, DMSO-dg) 811.74 (br s, IH) , 10.42 (br s,

IH), 7.87 (d, J=5 Hz, IH), 7.29 ( , IH) , 6.99 (m, 2H) , 6.85

(s, IH), 6.84 (d, J=5 Hz, IH), 3.81 (m, 2H) , 2.95 (t, J=7

Hz, 2H), 2.49 (q, J=8 Hz, 2H) , 1.09 (t, J=8 Hz, 3H) ;

MS (FD) m/e 321 (M ⁺ ) ;

UV(EtOH) 290nm (6=18247) , 266nm (6=18045) , 246nm (ε=15212) ,

202nm (ε=27817)

Anal. Calcd for Cι Hi7F2 3S: C, 59.79; H, 5.33; N, 13.07.

Found: C, 59.50; H, 5.31; N, 12.87.

Example 328

1-r(2-(2-pvridvl)ethvl)thiocarbamoyl! imidazole

A solution of l,l'-thiocarbonyldiimidazole (9.9 g, 50 mmol) and 2-(2-pyridyl)ethylamine (6.43 g, 50mmol) in acetonitrile (120 mL) was stirred at room temperature for

24 h. The solution was concentrated under reduced pressure and the resulting brown oil was triturated with ethyl ether. The remaining oil was placed under vacuum to provide 10.7 g of crude titled product as a black solid: IR (KBr, cm- ¹ ) 3125, 2930, 2098, 1548, 1477, 1437, 1363, 1329, 1284, 1221. 1098, 1063, 1030, 925, 828, 750, 661, 620; iH NMR (300 MHz, DMSO-dg) δ 10.35 (br s, IH) , 8.48 (m, IH) ,

8.33 (s, IH), 7.76 (s, IH) , 7.72 (m, 2H), 7.25 (m, 2H) , 3.95 ( , 2H) , 3.1 ( , 2H) ; MS (FAB) m/e 233 (M+H) ;

UV(EtOH) 267nm (6=5516), 261nm (6=6306) , 256nm (6=6220), 203nm (ε=14929)

Example 329

N- 12- 12-pvridvl)ethvll-N- - 12- (5-bromo)pvrazinvl1thiourea A solution of l-[(2-(2- pyridyl)ethyl)thiocarbamoyl] imidazole (1.16 g, 5 mmol) and 2-amino-5-bromopyrazine (0.87 g, 5 mmol) in N,N- dimethylformamide (20 mL) was stirred at 95 ^* C for 27 h.

The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue purified by chromatography on silica gel and crystallized from EtOAc to provide 0.13 g (7%) of the titled product as a tan solid: mp 185-190'C;

IR (KBr, cm ^"1 ) 3186, 1588, 1558, 1517, 1479, 1439, 1356, 1325, 1289, 1268, 1220, 1185, 1156, 1100, 1083, 1013, 996,

900, 876, 800, 760, 716, 569, 511, 431; iH NMR (300 MHz, DMSO-dg) δ 10.93 (br s, IH) , 10.74 (br s,

IH), 8.54 (d, J=5 Hz, IH) , 8.31 (s, IH) , 8.28 (s, IH) , 7.69 (m, IH), 7.28 (m, IH) , 7.21 (m, IH) , 3.96 (m, 2H) , 3.05 (t, J=7 Hz, 2H) ;

MS (FD) m/e 337 (M ⁺ ) , 339 (M+2);

UV (EtOH) 333nm (6=10984), 270 nm (6=25064).

Anal. Calcd for Ci2Hi2BrN5S: C, 42.61; H, 3.58; N, 20.71. Found: C, 42.41; H, 3.83; N, 20.54 .

Example 3 Q

N-T2-(2.6-difluorophenyl) thvll-N-- 12-(5- chloro)pvrazinvllthiourea A solution of l-[(2-(2,6- difluorophenyl)ethyl)thiocarbamoyl] imidazole (1.33 g, 5 mmol) and 2-amino-5-chloropyrazine (0.65 g, 5 mmol) in N,N-

dimethylforma ide (20 mL) was stirred at 95 ^* C for 24 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the resultant solid was purified by chromatography on silica gel and crystallized from EtOAc to provide 0.1 g (6%) of the titled product as a white solid: mp 170-171'C;

IR (KBr, cm- ¹ ) 3199, 3070, 1593, 1563, 1529, 1468, 1443, 1418, 1327, 1263, 1184, 1166, 1128, 1016, 779; iH NMR (300 MHz, DMSO-dg) δ 11.00 (br s, IH) , 10.53 (br s,

IH), 8.33 (s, IH), 8.19 (s, IH) , 7.30 ( , IH), 7.04 (m, 2H), 3.81 (m, 2H), 2.96 (t, J=7 Hz, 2H); MS (FD) m/e 328 (M+) , 330 (M+2); UV (EtOH) 332nm (6=10097), 274nm (6=22879)

Anal. Calcd for C13H11CIF2N4S: C, 47.49; H, 3.37; N, 17.04. Found: C, 47.54; H, 3.45; N, 17.19.

Example 331 1-r(2-(5-ethoχy carboπyl) hiazoly ) hiocarbamoyl1 imidazole

A solution of l,l'-thiocarbonyldiimidazole (8.9 g, 50 mmol) and 2-amino(5-ethoxy carbonyl)thiazole (8.9 g, 50 mmol) in acetonitrile (600 mL) was stirred at 50 ^* C for 20 h. The resulting precipitate was collected by filtration to provide 6.5 g (40%) of the titled product, mp 208-210'C (d) .

IR (KBr, cm" ¹ ) 3205, 3176, 3146, 3115, 1708, 1557, 1470, 1352, 1298, 1244, 1225; iH NMR (300 MHz, DMSO-dg) δ 13.2 (br s, IH) , 8.1 (s, IH) , 7.9 (s, IH), 7.6 (s, IH) , 7.1 (s, IH) , 4.2 (q, 2H) , 1.3 (t, 3H);

MS (FD) m/e (no correct pk) (M ⁺ ) ;

UV (EtOH) 349 n (6=4746), 269 nm (6=8713), 209 nm (ε=21033).

Anal. Calcd for C10H10N4O2S2: C, 42.54 H 3.57; N, 19.84. Found: -C, 42.37; H, 3.55; N, 19.59.

Example 332 N-r2-(l-cvclohexenvl)ethvll-N'-T2-(5-ethoxv carbonvl)thiazolvl1 thiourea A solution of l-[ (2-[5-ethoxy carbonyl]thiazolyl)thiocarbamoyl] imidazole (1.12 g, 4.0 mmol) and 2-(1-cyclohexenyl)ethylamine (0.5 g, 4.0 mmol) in (40 mL) was stirred at 90 °C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue recrystallized from ethyl acetate to provide 0.790 g (56%) of the titled product: mp. 197-198 ^* C;

IR (KBr, cm" ¹ ) 3243, 3121, 3044, 2991, 2925, 1707, 1582, 1543, 1458, 1190; iH NMR (300 MHz, DMSO-d6) δ 12.0 (br s, IH) , 8.5 (br s, IH) ,

7.9 (s, IH), 5.5 (s, IH), 4.3 (q, 2H) , 3.6 (m, 2H) , 2.2 (t,

J=7 Hz, 2H), 1.9 (m, 4H) , 1.5 (m, 4H) , 1.3 (t, J=7 Hz, 3H) ; MS (FD) m/e 339 (M ⁺ ) ; UV (EtOH) 262nm (6=17510), 205 nm (6=19237).

Anal. Calcd for C15H21N3O2S2: C, 53.07; H, 6.23; N, 12.38. Found: C, 53.31; H, 6.44; N, 12.42.

Example 333 N-f2-phenethvl)-N'- 2-(5-ethoxv carbonvl)thiazolvl1 thiourea A solution of l-[(2-[5-ethoxy carbonyl]thiazolyl)thiocarbamoyl] imidazole (1.1 g, 4.0 mmol) and 2-(1-phenyl)ethylamine (0.6 g, 4.0 mmol) in N,N- dimethylformamide (40 mL) was stirred at 90 ^* C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water, IN aqueous HCl, water, saturated sodium bicarbonate, and brine. The organic layer was concentrated and the residue crystallized from ethyl acetate to provide 1.07 g (80%) of the titled product: mp. 174-175'C;

IR (KBr, cm" ¹ ) 3340, 3253, 3124, 3056, 1707, 1682, 1579, 1537, 1454, 1252, 1222; iH NMR (300 MHz, DMSO-d6) δ 12.0 (br s, IH) , 8.7 (br s, IH) ,

7.9 (s, IH), 7.3 (m, 5H) , 4.3 (q, 2H) , 3.8 ( , 2H) , 2.9 (t, J=7 Hz, 2H), 1.3 (t, J=7 Hz, 3H); MS (FD) m/e 335 <M ⁺ ); UV (EtOH) 262nm (6=19184), 206 nm (6=26117) .

Anal. Calcd for C15H17N3O2S2: C, 53.71; H, 5.11; N, 12.53. Found: C, 53.48; H, 5.10; N, 12.68.

Examp e 334 N-T2-fl-cvclohexenvl)ethvll-N-- 2-(5-chloro)pvridvl! thiourea A solution of 2-amino-5-chloropyridine (1.28 g, 10.0 mmol) and 2-(l-cyclohexenyl)ethylisothiocyanate (1.67 g, 10.0 mmol) in 27,//-dimethylformamide (30 mL) was stirred at 90 ^* C for 1 h. The reaction was cooled to room temperature, concentrated under vacuum to remove solvent.

The residue was purified by HPLC to provide 0.560 g (19%) of the titled product: mp. 166-167'C;

IR (KBr, cm- ¹ ) 3455, 3159,1599, 1555, 1534, 1476; NMR (300 MHz, DMSO-dg) δ 11.1 (br s, IH) , 10.7 (s, IH) ,

8.2 (d, IH), 7.9 (m, IH) , 7.2 (d, IH) , 5.5 (s, IH) , 3.6 (m,

2H) , 2.2 (t, J=7 Hz, 2H), 1.9 (m, 4H) , 1.5 (m, 4H) ;

MS (FD) m/e 295 (M+) ;

UV (EtOH) 305nm (6=12139), 273nm (ε=15905), 244 nm (6=25052). Anal. Calcd for C14H18N3SCI C, 56.84; H, 6.13; N, 14.20. Found: C, 56.59; H, 6.00; N, 14.09.

Example 335 N-r2-(2-chlorophenyl)ethvll-N--T2-(5-chloro)pvridvl1 thiourea

A solution of N-[2-(2-chlorophenyl)ethyl]-N'- thiocarbamoyl imidazole (1.3 g, 5.0 mmol) and 2-amino-5- chloro pyridine (0.65 g, 5.0 mmol) in JW^-dimethylforma ide (25 mL) was stirred at 100 ^* C for 1 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water and brine. The organic layer was concentrated and the residue triturated with hexane to provide 0.83 g (55%) of the titled product: mp 178-179"C; iH NMR (300 MHz, DMSO-d6) δ 11.2 (m, IH) , 10.7 (s, IH) , 8.1

(m, IH), 7.5 (m, IH) , 7.4 (m, 2H) , 7.2 (m, 2H) , 7.1 (d, IH) , 3.8 (m, 2H), 3.1 (t, J=7 Hz, 2H) ; MS (FD) m/e 325 (M ⁺ ) ;

UV (EtOH) 305nm (6=12931) , 273 nm (6=22583), 253 nm (6=16558) 201 nm (6=25277) .

Anal. Calcd for C14H13N3SCI: C, 51.54; H, 4.02; N, 12.88. Found: C, 51.26; H, 3.99; N, 12.79.

Example 336 N-T2-f -rrvclohexenv )ethvll-N*-T3-(6-chloro)pyridazinyl1 thiourea A solution of 3-amino-6-chloropyridazine (1.3 g, 10.0 mmol) and 2-(l-cyclohexenyl)ethylisothiocyanate (1.67 g, 10.0 mmol) in jV,JM ^* -dimethylformamide (20 mL) was stirred at 90 °C for 1.5 h. The reaction was cooled to room temperature and concentrated under vacuum to remove solvent. The residue was purified by HPLC to provide 0.220 g (7.5%) of the titled product: mp. 149-153 ^* C; pKa in (66% DMF) 12.8;

IR (KBr, cm" ¹ ) 3203, 3072, 2935, 1599, 1565, 1520, 1424,

1351, 1308, 1280, 1184, 1147, 1073; iH NMR (300 MHz, DMSO-dg) δ 11.1 (m, IH) , 10.9 (s, IH), 7.8

(d, IH), 7.6 (d, IH), 5.5 (s, IH) , 3.7 (m, 2H) , 2.2 (t, J=7 Hz, 2H), 1.9 (m, 4H) , 1.5 (m, 4H) ; MS (FD) m/e 296 (M ⁺ ) ; UV (EtOH) 275nm (6=23066) .

Anal. Calcd for C13H17N4SCI C, 52.60; H, 5.77; N, 18.87. Found: C, 52.85; H, 5.84; N, 19.15.

Example 337

N- 12- 12. 6-difluorophenyl)ethvll-N'- 13- (6- chloro)pyridazinvl1 thiourea

A solution of N-[2-(2, 6-difluorophenyl)ethyl]- N'-thiocarbamoyl imidazole (1.33 g, 5.0 mmol) and 3-amino- 6-chloropyridazine (0.65 g, 5.0 mmol) in N,N-

dimethylformamide (20 mL) was stirred at 80 ^* C for 19 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water and brine. The organic layer was concentrated and the residue was purified by HPLC to provide 0.12 g (7.5%) of the titled product: mp 187-189 ^* C; IR (KBr, cm" ¹ ) 3199, 3055, 1626, 1593, 1555, 1522, 1469,

1425, 1348,1313, 1263; iH NMR (300 MHz, DMSO-dg) δ 11.2 (m, IH) , 10.9 (s, IH) , 7.9 (d, IH), 7.6 (d, IH), 7.3 (m, IH) , 7.1 ( , 2H) , 3.9 (m, 2H), 3.0 (t, J=7 Hz, 2H); MS (FD)_m/e 328 (M+) ; pKa in (66% DMF) 12.73;

UV (EtOH) 277nm (ε=20141) , 252 nm (ε=12935) , 201 nm (6=17891) .

Example 338

N-r2-(2. 6-difluorophenyl)ethvl1-N'- 1 -(6- methoxy) vridazinvl1 thiourea A solution of N-[2-(2, 6-difluorophenyl)ethyl]-

N'.-thiocarbamoyl imidazole (0.8 g, 3.0 mmol) and 3-amino-6- methoxy pyridazine (0.4 g, 3.0 mmol) in N, N- dimethylformamide (20 mL) was stirred at 70 ^* C for 19 h. The reaction was cooled to room temperature, poured into ethyl acetate, washed with water and brine. The organic layer was concentrated and the residue was precipitated with diethyl ether to provide 0.235 g (24%) of the titled product: mp 193-196 ^* C; IR (KBr, cm" ¹ ) 3222, 3084, 1628, 1586, 1560, 1531, 1468, 1423, 1356, 1310, 1266;

iH NMR (300 MHz, DMSO-dg) δ 11.45 (m, IH) , 10.7 (s, IH) , 7.42 (d, J=10 Hz, IH), 7.28 ( , IH) , 7.21 (d, J=10 Hz, IH) , 7.0 (t,-J=8 Hz, 2H), 3.9 (s, 3H), 3.85 (m, 2H) , 3.0 (t, J=7 Hz, 2H); MS (FD) m/e 324 (M+) ;

UV (EtOH) 269nm (6=18845), 235 nm (ε=10636) , 201 nm

(6=16622) .

Example 339 N-T2-(2-pvridvl) thvll-N'-T3-(6-chloro) vridazinvl! thiourea

A solution of l,l*-thiocarbonyldiimidazole (1.83 g, 10.0 mmol) and 3-amino-6-chloro pyridazine (1.3 g, 10.0 mmol) in acetonitrile (100 mL) was stirred at room temperature for 288 h. To this solution was added 2-(2- aminoethyl) pyridine (1.22 g, 10 mmol) and the resultant mixture stirred at room temperature for 48 h. The solvent was removed in vacuo and the residue purified by HPLC to provide 0.300 g (10.0%) of the titled product: mp 197-199 ^* C;

R (KBr, cm" ¹ ) 3172, 3045, 1583, 1562, 1511, 1478, 1428,

1345,1313, 1280; iH NMR (300 MHz, DMSO-dg) δ 11.3 (m, IH) , 10.9 (s, IH) , 8.6

(d, J=5 Hz, IH), 7.8 (d, J=10 Hz, IH) , 7.7 (m, IH) , 7.55 (d, J=10 Hz, IH), 7.3 (d, J=8 Hz, IH), 7.2 (m, IH) , 4.0 (m, 2H) , 3.1 (t, J=7 Hz, 2H); MS (FD) m/e 293 (M ⁺ ); pka (66% DMF) is 4.17, 12.32; UV (EtOH) 275nm (6=21715), 270 nm (6=21836), 221 nm (ε=9867) .

Anal. Calcd for C12H12N5SCI2: C, 49.06; H, 4.12; N, 23.84, Found: C, 48.91; H, 4.14; N, 23.76.

Example 340 N- 12-(2.6-D*ifluorophenyl)ethvll-N'- 12-(5-bromo) vridvl! thiourea A stirred solution of N-(thioimidazoyl)-2- (2,6-difluorophenyl)ethyl amine (2.67 g, 10 mmol) and 2- amino-5-bromopyridine (1.73 g, 10 mmol) in l-methyl-2- pyrrolidinone (20 mL) was heated to 90 ^* C. After 16.5 h, the reaction was cooled to room temperature and poured into ethyl acetate. The organic phase was washed with H20 (2x) , IN HCl, H20 and brine. The organic layer was dried over Na2S04, filtered and concentrated. The solid obtained was purified by recrystallization from 1:1 EtOAc/hexanes to provide 1.6 g (43%) of the titled product. This material was recrystallized again from 70% EtOAc/hexanes to provide 1.16 g of the titled product as a light brown crystalline solid: mp 174-175°C;

IR (KBr, cm" ¹ ) 3229, 1593, 1558, 1529, 1468, 1265, 1188,

1071, 832; iH NMR (300 MHZ, DMSO-dg) δ11.20 (s, IH) , 10.68 (s, IH) ,

8.11 (s ^' , IH), 7.95-7.91 (m, IH) , 7.33-7.28 (m, IH) , 7.09- 7.01 (m, 3H), 3.83-3.77 (m, 2H) , 2.98-2.94 (m, 2H) ;

MS (FD) m/e 371 (M+) , 373 (M+2);

UV (EtOH) 306nm (6=12790), 275nm (ε=22096) , 257nm

(6=14120), 201nm (6=17270).

Anal. Calcd for Ci4Hi2BrF2N3S: C, 45.17; H, 3.25; N, 11.29. Found: C, 44.96; H, 3.29; N, 11.21.

Example 341

2-ryanomethvl-3-ethoxvpvridine A solution of thionyl chloride (3.26 g, 27.4 mmol, 2.0 mL) in CH2CI2 (10 mL) was added dropwise with stirring to a solution of 2-ethoxy-3- hydroxymethylpyridine (3.0 g, 19.6 mmol) in CH2CI2 (20 mL) at 0°C. The ice bath was removed and the reaction stirred 2 h at RT. The reaction was concentrated in vacuo and redissolved in MeOH (30 mL) . Potassium cyanide (3.82 g, 58.7 mmol) was dissolved in H2O (10 mL) and added to the reaction in one amount. The reaction was heated to reflux and stirred for 66 h, then quenched with saturated Na2C03 solution. The reaction was diluted with H2O and extracted with Et2θ (3x) . The combined organic extracts were washed with brine, dried over Na2S04, filtered and concentrated to yield 2.84 g (89%) of the titled product as a brownish oil. A small sample was further purified by flash chromatography (40% EtOAc/hexanes) to provide a clear, colorless oil: IR (KBr, cm- ¹ ) 3020, 2988, 2936, 1579, 1450, 1397, 1282, 1122, 1041; NMR (300 MHZ, CDCI3) δ8.17-8.15 (m, IH) , 7.25-7.15 (m,

2H), 4.09 (q. J* _* 7 Hz, 2H) , 3.90 (s, 2H) , 1.47 (t, J=7 Hz,

3H); MS (FD) m/e 162 (M+);

UV (EtOH) 278nm (ε= 5241), 220nm (ε= 7490).

Examole 342 N- 12-(3-ethoxvpvridvl)ethvll-N'- 12- (5-bromo) vridvl1 thiourea A solution of 2-cyanomethyl-3-ethoxypyridine (22.03 g, 136 mmol) in EtOH (475 mL) and 5N HCl (3 mL) was treated with Ptθ2 catalyst (4.5 g) under 60 psi of H2. The reaction was stirred overnight at RT, then filtered. The crude reaction was concentrated and redissolved in H2θ and EtOAc. The aqueous layer was made basic with 5N NaOH and extracted with EtOAc. The organic layer was washed with brine, dried on a2S04, filtered and concentrated to give 16.89 g of a yellow oil. This crude product was dissolved in l-methyl-2-pyrrolidinone (175 mL) and N-(thioimidazoyl)-2-amino-5-bromopyridine (36 g, 127 mmol) was added. The reaction was heated to 100°C and stirred for 68 h. The crude reaction was cooled and poured into EtOAc. The organic layer was washed with H20 (4x) , brine, dried on Na2S04, filtered and concentrated. The resulting solid was again dissolved in EtOAc and extracted with IN HCl (3x) . The acid extracts were stirred with CH2CI2, made basic with 5N NaOH and extracted with CH CI2 (2x) . The CH2CI2 extracts were combined, washed with brine, dried on MgS04, filtered and concentrated. The crude product -was purified by flash chromatography (10% EtOAc/CH2Cl2) . followed by trituration with 1:1 EtOAc/hexanes to provide 3.76 g of the titled product (7%) as a white crystalline solid: mp 170-172°C; iH NMR (300 MHZ , DMSO-dg) 8 11.39 (S, IH) , 10.59 (s , IH) ,

8.13 -8.11 (m, 2H) , 7.92-7.87 ( , IH) , 7.30 (d, J=8.1 Hz ,

1H), 7.22-7.18 (m, IH) , 7.05 (d, J=8.9 Hz, IH) , 4.05-3.95 (m, 4H), 3.00 (t, J=6.3 Hz, 2H) , 1.29 (t, J=6.9 Hz, 3H);

MS (FD) m/e 380 (M+), 382 (M+2);

UV (EtOH) 305nm (6= 16291), 276nm (ε= 36829).

Example 343 N-r2- 1 -ethoxvpvridvl) thvl1- ^■ - 12 - 1 -bromo) vridvl1 thiourea hydrochloride N-[2-(3-ethoxypyridyl)ethyl]-N'-[2-(5- bromo) yridyl] thiourea (5.17 g, 13.5 mmol) was dissolved in a saturated solution of methanolic HCl (100 mL) with stirring. After complete dissolution, a precipitate started to form. The solution was poured into Et2θ (400 mL) with stirring, and the resulting white solid was filtered. The crude product was triturated with 10%

MeOH/EtOAc to provide 5-.47 g of the titled product (97%) as a white solid: mp 203-205°C (d);

IR (KBr, cm- ¹ ) 3226, 3007, 2306, 1593, 1565, 1530, 1472, 1290, 1197, 1172; iH NMR (300 MHZ, DMSO-dg") δ11.24-11.20 (m, IH) , 10.65 (s,

IH), 8.29 (d, J=5.3 Hz, IH), 8.17 (d, J=2.3 Hz, IH) , 7.96-7.88 (m, 2H) , 7.73-7.68 (m, 2H) , 7.08 (d, J=8.9 Hz, IH), 4.10-4.03 (m, 4H) , 3.24 (t, J=6.0 Hz, 2H) , 1.27 (t, J=6.9 Hz, 3H);

MS (FD) m/e 380 (M+) , 382 (M+2);

UV (EtOH) 304nm (6=13635) , 276nm (6=28876) .

Anal. Calcd for Ci5HιβBrClN40S: C, 43.13; H, 4.34; N, 13.41. Found: C, 42.90; H, 4.36; N, 13.11.

Example 344 1-r (2-amino-5-bromopyridvl)thiocarbamoyl1 imidazole

A solution of 1,1'-thiocarbonyldiimidazole (17.8G, 0.1m) and 2-amino-5-bromopyridine (17.3g, 0.1m) in acetonitrile (150 mL) was stirred at room temperature for 2 hours. To this suspension was added the material described below.

Example 345 N-f2-(2-pyridyl) ethvl)1-N ¹ -(2-amino-5-bromopvridvl) thiourea To the above solution of 1-[ (2-amino-5- bromopyridyl)thiocarbamoyl]imidazole was added 2-(2- aminoethyl)pyridine (14.7g, 0.12m) stirred at r.t. for 2 hours and at 50 ^* C 12 hours. The reaction was cooled to room temperature, filtered, washed with acetonitrile.

The resultant solid was dissolved in methanol, filtered, hydrogen chloride gas was bubbled into this solution with cooling. Solvents removed under reduced pressure and the resulting residue was recrystallized from methanol ethyl ether to provide 24.8g (76%) of the titled product as a white solid: mp 215-216 ^" C;

IR (KBr, cm" ¹ ) 3015, 2576, 1634, multiple peaks between (1633-400) ; iH NMR (300 MHz, DMSO-dg) δ 11.30 (s, IH) , 10.75 (s, IH) ,

10.78 (s,lH), 8.80 (d, IH) , 8.40 (t, IH) , 8.22 (s, IH) , 7.97-8.00 (q, IH) , 7.82-7.90(d, IH) , 7.80(t, IH) , 7.10 (d, IH), 4.10(q,2H), 3.35(t, 2H) ; MS (FD) m/e 338(M ⁺ ) ;

UV (EtOH) 305nm (ε=13565), 274nm (ε=24201), 201 nm (6=17628) .

Anal. Calcd for Ci3Hi4N4BrClS: C, 41.78; H, 3.78; N, 14.99. Found: C, 42.02; H, 3.86; N, 15.16.

Example 346

N-T2-((3-Methoxv) vridvl)ethvll-N--T2-(5- bro o) vridvl1 hiourea hydrochloride

A ⁾ preparation of 2 -Hydroxymethyl -3 -methoxy pyridine,

Potassium hydroxide (41.66g ,0.744 mol) was ground under nitrogen and stirred in DMSO (130 ml, anhydrous) for 20 min. 3-Hydroxy-2-hydroxymethyl pyridine hydrochloride [Aldrich] (47 g, 0.248 mol) was added and stirred for 30 min in an ice bath. Methyl iodide (35.2 g, 0.248 mol, 15.43 ml) in DMSO (20 ml) was added dropwise to the solution and then allowed to stir overnight at room temperature. 5N HCl was added to pH 1 and the solution was extracted with dichloromethane (5X 500ml) . The aqueous was then basified with 5N NaOH to pH 14 and extracted with dichloromethane (3X 500 ml) . The organics (base wash) were dried over sodium sulfate, and concentrated leaving tan colored crystals. The solid was recrystallized (50% ethyl acetate/hexanes) providing "10.8 g (32%) of the titled product as light tan crystals: mp 72°C;

IR (KBr ^" , cm- ¹ ) 3080, 1575, 1459, 1424, 1278, 1218, 1066, 809;

iH NMR (300 MHZ, DMSO-dg) 88.5 (d,J=4.5Hz,IH) , 7.3 (d,J=8.3Hz,lH), 7.25 (dd,J=8.2,4.6 Hz,IH) , 4.77 (t,J=5.74Hz,lH), 4.48 (d,J=5.6Hz,2H) , 3.77 (s,3H); MS (FD) m/e 139 (M+); UV (EtOH) 278nm (6=4909), 220nm (ε=6984) .

Anal. Calcd for C7H9NO2: C,60.42; H,6.52; N 10.07. Found: C, 60.32; H,6.54; N,10.23.

B) Preparation of 2-T (3-methoxy)pvridvl!acetonitrile. Thionylchloride (100 ml) was added dropwise to

2-Hydroxymethyl-3-methoxy pyridine (13.9 g, 0.1 mol) while stirring in an ice bath. After initial fuming subsided, the thionyl chloride was added more rapidly. The solution was then heated to reflux for 2 h. After cooling, the thionyl chloride was removed under reduced pressure leaving brown crystals. The solid was taken up in 190 ml methanol and potassium cyanide (19.4 g, 0.298 mol) dissolved in 80 ml of water was added to the methanolic solution. This solution was heated to reflux and allowed to reflux overnight. The solution was cooled down and 150 ml of saturated sodium carbonate was added and then poured into diethyl ether (500 ml) . The solution was extracted 3 more times with 500 ml diethyl ether. The collected organics were washed with brine and saturated sodium bicarbonate. The organics were dried over sodium sulfate and concentrated giving 12.1 g (81.7%) of brown crystalline solid. This solid was used in the reduction without further purification: mp 71°C;

IR (KBr, cm" ¹ ) 3074, 2949, 2253, 1578, 1459, 1286, 1017,

821;

^X H NMR (300 MHZ, DMSO-dg") δ 8.07 (m,IH) , 7.43 (m,lH),

7.35 (m,lH), 4.0 (s,2H), 3.8 (s,3H); MS (FD) m/e 148(M+) ;

UV (EtOH) 278nm (ε=5407), 219nm (ε=7435) .

Anal. Calcd for C8H8N2O: C64.85; H,5.44; N,18.91 .

Found: C, 64.62; H,5.50; N,19.0.

C) Preparation of 2-Ethvlamine-3-methoxvpvridine.

2-[(3-methoxy) yridyl]acetonitrile (2.0 g, 13 mmol) in 25 ml ethanol waε reduced at room temperature under 60 p.s.i. for 24 h using platinum oxide (0.5 g) and 5N HCl (0.2 ml) as catalyst. The organics were concentrated and then taken up in ethyl acetate and water. IN NaOH was added to pH 12 and the amine was extracted out (2x300 ml ethyl acetate) . The organics were then washed with brine and saturated sodium bicarbonate and then dried over sodium sulfate. The solution is filtered and concentrated giving 1.5 g of oily material. This is used without further purification.

D) Preparation of N- 12- 3-Methoxy) vridvl)ethvll-N'- 12- f5-bromo)pvridvl1 hiourea

Thiocarbonyldiimidazole (5 g, 28 mmol) was taken up in acetonitrile (50 ml, anhydrous) and stirred.

2-Amino-5-bromopyridine [Aldrich] (4.85 g, 28 mmol) and

30 ml acetonitrile was added to the solution. The solution was allowed to stir overnight forming a

precipitate. The cream colored solid was filtered off and used in the next reaction without further purification. (6.89 g, 87%)

The cream colored solid (2.88 g, 10.3 mmol) was taken up in 1-methyl-2-pyrrolidinone [Aldrich] . 2- Ethylamine-3-methoxypyridine was added and the solution was heated to 100°C overnight. The solution was poured into ethyl acetate and washed with water and saturated sodium bicarbonate (3x 200 ml) . The organics were then dried over sodium sulfate and concentrated. The crude material was purified fcy flash chromatography on silica gel using 40% ethyl acetate /hexanes, giving lOOmg (3%) of needle-like crystals: mp 178°C; IR (KBr, cm ^"1 ) 3157, 3037, 1595, 1562, 1534, 1314, 1275, 1178, 1023, 825; iH NMR (300 MHZ, DMSO-dg) δll.53 (S,1H), 8.5 (s,lH),

8.17-8.12 (m,2H). 7.68-7.65 (dd, J=8.75, 8.73Hz, IH) , 4.24-4.18 (m.2H), 3.8 (s,3H), 3.2-3.17 (t, J=6.63Hz, 2H) ; MS (FD) m/e 366(M+), 368(M+l) ,369(M+2) ;

UV (EtOH) 305nm (6=13005), 275nm (6=28998) .

Anal. Calcd for Ci4Hi5N4θSBr: C,45.78; H,4.12; N,15.25 .

Found: C,45.85; H.4.12; N, 15.12.

E) Preparation of N- 12- 3-Methoxy) vridvl)ethvll-W- 12 - (5-bromo)pvridv ! hiourea hydrochloride

N-[2-( (3-Methoxy) yridyl)ethyl]-N'-[2-(5- bromo)pyridyl]thiourea (70 mg, 0.02 mmol) was taken up in a solution of methanol saturated with HCl. The solid immediately went into solution and then came back out as a white solid. More of the solid was crashed out with

diethyl ether. This solid was filtered providing 65 mg (84%) of the hydrochloride salt.

Example 347 N-(2-f2-Fluoro-6-methoxv)-phenethvl)-N*-(2-thiazolvl) thiourea

3-Fluoro-anisole (10 ml, 88 mmol) was dissolved in dry THF (200 ml) . The solution was cooled to -75° C and n-BuLi (52 ml, 105 mmol) was added slowly. The pale yellow solution was stirred at -70°C for 10 minutes. DMF (20 ml) was added and the solution was warmed to ambient temperature. Toluene (200 ml) was added and the solution was washed with water and evaporated to dryness. The product formed crystals. The aldehyde was transformed into the corresponding titled thiazolyl-thiourea product according to the procedure in Example 151. NMR,CDCl3 δ 2.9-3.0 (2H, t) 3.7-3.9 (2H, t) 6.7-6.9

(2H, q, m) 7-7.1 (IH, d,) 7.15-7.3 (IH, q) 7.4 (IH, d).

Example 348 Cis-fD.L)-2-Phenvlcvclopropvlamine

Styrene (100 ml, 873 mmol), Cul (10 mg, 0.05 mmol) and Pd(OAc)2 (10 mg, 0.045 mmol) in 1,2- dichloroethane (100 ml) was heated to reflux. Ethyl diazoacetate (50 ml, 475 mmol) in styrene (100 ml, 873 mmol) was added over 30 minutes. The solution was refluxed for an additional 5 minutes. The solution was cooled and filtered through a short column of alumina which was eluted with ethyl acetate/hexane

(1:9). The solvents including styrene were evaporated. The residual oil contained a cis-trans mixture (3:7). The oil was dissolved in methanol (200 ml) , and potassium hydroxide (30 g, 535 mmol) in water (50 ml) was added. The solution was refluxed for 2 hours. The solution was cooled and diluted with toluene (100 ml) and water (100 ml).

The water-phase was separated and acidified with hydrochloric acid. The solution was extracted with toluene. The organic phase was dried with sodium sulphate, filtered and evaporated, yielding a pale brown solid. The solid (70 g, 430 mmol) was dissolved in acetone (400 ml) with mechanical stirring under an atmosphere of N2~gas. Triethylamine (70 ml, 502 mmol) was added. The solution was cooled to 5° C and ethyl chloroformate (41 ml, 430 mmol) was added during 20 minutes. The solution was stirred for an additional 5 minutes. Sodium azide (30 g, 460 mmol) in water (100 ml) was added and the solution was stirred for 30 minutes. Toluene (400 ml) was added and a thick, white precipitate formed. The solution was decanted to remove the precipitate and dried with sodium sulphate (50 g) . The solution was evaporated to 1/4 of the original volume. The solution was diluted with 1,2-dichloro-ethane (400 ml) and was refluxed for 3 hours with evolution of nitrogen gas.

To the solution was added a mixture of hydrochloric acid (cone. aq. ) (100 ml), water (100 ml) and dioxane (200 ml) . The solution was refluxed for 3 hours with evolution of CO2 gas. The solution was diluted with water (200 ml), the water-phase was

separated and washed with 1,2-dichloroethane, basified with ammonia (cone. aq.) and extracted with dichloromethane (3 x 100 ml) . The organic-phase was washed with water (100 ml) , dried with sodium- sulphate, filtered and evaporated.

50 g of the residual oil was separated on 1000 ml silica-gel, by elution with ethyl acetate, the product (cis) is the faster-eluting component. The pure cis-fractions were evaporated to yield an oil (14g). iH-NMR CDCI3 δppm 0.8-0.9 (IH, CH2 , m) 1.1-1.2 (IH, CH ₂ , m) 2.-2.1 (IH, PhCH, q) 2.6-2.7 (IH, CHNH ₂ m.) 7.1-7.4 (5H, Ph.).

Example 349

N-(cis-(D.L)-2-pheπvlcvclopropvl)-N -(2-thiazolvl)- thiourea

The product cis-(D,L)-2- phenylcyclopropylamine from Example 348 was transformed into the titled product according to the procedure in Example 151.

iH-NMR CDCI3 δppm 1.2-1.3 (IH, CH , m) 1.5-1.6 (IH, m) 2.4-2.5 (IH, q, PhCH) 3.6-3.7 (IH, ) 6.6-6.7 (IH, d) 6.8-6.9 (IH, d) 7.2-7.4 (5H, m)

Example 350 W-fcis-(P. )-2-phenylcvclobuty )-N'-(2-thiazolyl)- thiourea A cis/trans mixture of 2- phenylcyclobutylamine (C. Beard, A. Burger, JOC, 27,

1647 (1962)) (0.150 g, 1 mmol) was condensed with 165 mg of the product of Example 103 according to the procedure of Example 105. The solution was put into a refrigerator (-10°C) over night and the crystals were collected on a filter and washed with CH3CN. The

^' stereochemistry was determined with NOE-difference NMR. The crystals were pure cis. iH-NMR CDCI3 δppm 2.2-2.4 (3H, m) 2.6-2.7 (IH, m)

3.9-4.0 (IH, q) 5.1-5.2 (IH, q) 6.6-6.7 (IH, d, thiazole) 6.8-6.9 (IH, d, thiazole) 7.3-7.5 (5H, m, Ph).

Example 351

N-(cis-(D.L)-2-methvl-2-phenvl-cvclopropvl)-N'-(4- chlorophenyl)thiourea a-Methylstyrene (Aldrich) was tranεformed into the corresponding amine as a cis-tranε mixture according to the procedure of Example 348. The amine (300 mg ^' , 2.04 mmol) and 4-chloro-phenylisothiocyanate were refluxed in CH3CN (5 ml) for 60 minutes. The solution was evaporated and final purification was made by flash-chromatography on silica-gel by elution with ethyl acetate/n-hexane (1:4). The collected fractions were pure cis as determined by NOE- difference NMR. iH-NMR CDCI3 δ1.1-1.2 (2H, m, Cfi ₂ ) 1.4-1.5 (3H, s, CE3), 3.2-3.4 (IH, m, CfiN) , 6.4-6.5 (IH, b.s., NH) , 7.0-7.1 (2H, Ph), 7.3-7.5 (7H, s,+m, Ph) , 7.9-8.1 (IH, b.ε. , NH) •

Exa ple 352

N- 12- .6-di luorophenyl) thvl)- ¹ -(2-Pvrazinvl)- thiourea 2,6-Difluorophenethylamine (1.0 g, 6.4 mmol), 2-aminopyrazine (0.61 g, 6.4 mmol) and N,N- thiocarbonyl-diimidazole (1.13 g, 6.4 mmol) were condensed according to the procedure of Example 93 to give the titled compound as crystals. iH-NMR CDCI3 δppm 3.1-3.2 (2H, t, PhCfi2), 3.9-4.0 (2H, t, C2 ₂ N),

6.8-6.9 (2H, t, Ph), 7.1-7.3 (IH, m, Ph) , 7.9-8.0 (IH, s, pyr), 8.1-8.2 (IH, d, pyr), 8.3-8.4 (IH, s, pyr), 9.3-9.4 (IH, b.s., N2) , 11.0-11.2 (IH, b.s.,

NS).

Example 353

N-f2-(2 r6-difluoro- -carboxamidomethvl phenvl)ethvl)- N'- 12-.5-bromopvridvl)-thiourea 2,6-Difluorobenzaldehyde (10 g, 70.4 mmol), ethylene glycol (20 ml), triethyl-orthoformate (10 ml) and para-toluene sulphonic acid in 1,2-dichloroethane were heated to 80°C for 2 hours. The solution was neutralized with sodium hydrogen carbonate, washed with water, dried with sodium sulfate, filtered and evaporated. The residual oil was dissolved in tetrahydrofurane (700 ml) under nitrogen-atmosphere. The solution was stirred and cooled to -70°C and n- BuLi (48ml, 1.6 M) was added slowly. The solution was stirred for 20 minutes. Dry-ice (20 g, 455 mmol) was added as quickly as possible (foaming) .

The εolution was slowly brought up to ambient temperature. ater was added and the solution was washed with ethyl acetate, acidified with acetic acid and extracted with ethyl acetate. The organic phase was dried with sodium sulfate, filtered and evaporated. 1 g of the residual εolid (4.35 mmol) and N,N-diisopropylamine (2.0 ml) were dissolved in dichloromethane (50 ml) and the solution was cooled to 0°C. Thionylchloride (0.50 ml, 6.9 mmol) was added and the solution was slowly heated to ambient temperature. Methylamine (3 ml) was added. The solution was stirred for 30 minutes and was washed with water, dried with sodium sulfate, filtered and evaporated.

The residue was dissolved in a mixture of water and dioxane (1:2, 20 ml) and para-toluene sulphonic acid (0.5 g, 2.63 mmol) was added. The solution was stirred and heated to 60°C for 2 hourε. The solution was neutralized with sodium hydrogen carbonate, extracted with ethyl acetate, dried with sodium sulfate, filtered and evaporated.

The residue was dissolved in toluene and benzyloxycarbonylmethyl triphenyl-phosphorane (1.5 g, 3.7 g) was added. The solution was stirred for 30 minutes at 50°C. The solution waε put onto a silica- gel column. The column was eluted with ethyl acetate- hexane (1:2) and the collected fractions were evaporated. 0.15 g of the residue waε hydrogenated in methanol (50 ml) and acetic acid (5 ml) with Pd/C (10

%, 100 mg) and hydrogen gas, using a Parr apparatus at 1.5 bar for 1 hour.

The solution was filtered through Celite and evaporated. A part of the residue (50 mg, 0.26 mmol) was dissolved in acetone at 0°C.

Triethylamine (50 ml, 0.36 mmol) was added followed by ethyl chloroformate (30 ml, 0.32 mmol). The solution was stirred for 15 minutes and sodium azide (30 mg, 0.46 mmol) in water (2 ml) was added. The solution was stirred for 15 minutes, diluted with ethyl acetate, washed with water, dried with sodium sulfate, filtered and evaporated.

The residue was dissolved in toluene (20 ml) and was stirred and heated at 90°C for 1 hour. The solution was evaporated and dissolved in a dioxane- water-hydrochloric acid (cone. aq.) mixture (1:3:1). The solution was εtirred at ambient temperature for 20 minutes. The solution was evaporated and the residual 2-(2,6-difluoro-3-carboxamidomethyl phenyl)ethylamine hydrochloride was condensed with 1-(2-amino-5- bromopyridyl)-1'-(imidazolyl)thiocarbonyl using the procedure of Example 94.

The reaction mixture was evaporated and the residue was purified by flash chromatography on silica-gel by elution with ethyl acetate-hexane (1:1) . Evaporation of the collected fractions yielded the titled product. iH-NMR CDCI3 δppm 2.9-3.0 (3H, s, CH3), 3.1-3.2 (2H, t, PI1CH2), 4.0-4.1 (2H, t, CH2N), 6.8-6.9 (IH, d) , 6.9-7.0 (2H, t), 7.7-7.8 (2H, m) , 8.0-8.1 (IH, s) .

Examole 354 N- (2-(3-acetamidomethvl-2.6-difluorophenyl)-ethvl) -N ' - (2- 15-bromopvridvl) )-thiourea Under an atmosphere of nitrogen-gas, 2,4- difluorobenzonitrile (Aldrich) (4.6 g, 33 mmol) was dissolved in tetrahydrofurane (200 ml) with stirring under an atmosphere of nitrogen gas. The solution was cooled to -75°C and lithium-diisopropylamide (25 ml, 1.5 M solution) was added. The .solution was stirred for 15 minutes and dimethylformamide (10 ml) was added. The cooling was withdrawn and the solution waε diluted with toluene (200 ml) , washed with water, dried with sodium εulfate, filtered and evaporated. The residue (4.76 g, 28.5 mmol) was dissolved in 250 ml toluene and benzyloxycarbonylmethyl triphenyl- phosphorane (14 g, 34 mmol) was added.

The solution was stirred for 40 minutes at 35°C (slightly exothermic reaction) , and then put onto a column of εilica gel. The column was eluted with ethyl acetate-hexane 1:4, and the collected fractions were evaporated. A small part of the residue (0.5 g) was dissolved in methanol (50 ml) and acetic acid (6 ml) and 5 % - Pd/C (300 mg) was added. The mixture was hydrogenated in a Parr apparatus at 1.5 bar for 1 hour.

The solution was filtered through celite and evaporated. The residue was dissolved in acetic anhydride and the solution was stirred and heated to 50°C for 20 minutes. Excess reagent was evaporated

and the residue was dissolved in water. The solution was heated to 60°C for 20 minutes under stirring. The residue (0.29 g, 1.14 mmol) was dissolved in acetone at 0°C. Triethylamine (0.315 ml, 2.3 mmol) was added, followed by ethyl chloroformate (0.16 ml, 1.7 mmol) . The solution was stirred for 15 minutes and sodium azide (220 mg, 3.3 mmol) in water (2 ml) was added. The solution was stirred for 15 minutes, diluted with ethyl acetate, washed with water, dried with εodium εulfate, filtered and evaporated.

The reεidue was dissolved in toluene (20 ml) and was stirred and heated at 90°C for 1 hour. The solution was evaporated and dissolved in a dioxane- water-hydrochloric acid (cone. aq. ) mixture (50:10:1, 50 ml) . The solution was stirred at ambient temperature for 20 minutes. The solution was evaporated and the residual amine-hydrochloride was condensed with l-(2-amino-5-bromopyridyl)-1'- (imidazolyl)thiocarbonyl using the procedure of Example 94.

The reaction-mixture was evaporated and the residue was purified by flash chromatography on silica-gel by elution with ethyl acetate-hexane (1:1) . The collected fractions were evaporated to yield the titled product as crystalε. iH-NMR CDCI3 δppm 1.9-2.0 (3H, s, CH3CON) , 3.0-3.1 (2H, b.s., PI1CH2CH2N) , 3.9-4.1 (2H, b.s., PhCH ₂ CH.2N) , 4.3-4.4 (2H, s, PhCfi2N), 6.8-6.9 (2H, m) , 7.2-7.4 (IH, m), 7.7.-7.8 (IH, d) , 8.1-8.2 (IH, s) .

Examole 355 N-(4-methvl-3-pentenvl)-N-- (4-methvl-2- thiazolvl)thiourea 4-Methyl-3-pentenylamine and an activated derivative of 2-amino-4-methylthiazole, i.e. l-(2- amino-4-methylthiazole)-1'-imidazole thiocarbonyl, were condensed according to the procedures of Example 105 to give the titled product. Mp. : 164.5 - 165.5°C.

Analyses: Calculated C 51.73, H 6.71, N 16.45; Found C

52.0, H 6.9, N 16.7. iH-NMR (CDC1 ₃ d) : 1.65 (s, 3H) , 1.73 (d, 3H) , 2.29 (d,

3H), 2.40 (q, 2H) , 3.70-3.78 (m, 2H) , 5.16-5.22 (m, IH), 6.36 (q, IH) , 10.14 (broad s, IH) , 10.90 (broad s, IH) . ¹³ C NMR (CDCl ₃ d) : 17.16, 17.93, 25.83, 27.28, 45.69,

105.04, 120.53, 134.84, 147.99, 160.79, 177.28.

Example 356

N-(2-(2.6-difluoro)-phenethvl)-N--(2- benzimidazolvl)thiourea 2,6-Difluorphenetylamine and 2- aminobenzimidazole were reacted according to the procedures of Examples 93 and 94, using 2- aminobenzimidazole instead of 2-aminothiazole, to give the titled product.

Mp: 195-7°C (dec) iH-NMR (DMSO-dg d) : 3.16 (t, 2H) , 4.02 (q, 2H) , 7.14- 7.24 (m, 4H), 7.43-7.49 (m, 3H) , 11.13 (broad s, IH) , 11.40 (broad s, IH) .

Example 357

N- 12-(3-hvdroxv)-phenethvl)- ¹ -f5-bromo-2- pvridinvl)thiourea

3-Hydroxyphenethylamine and 5-bromo-2- aminopyridine were reacted according to the procedures of Examples 93 and 94, using 4-bromo-2-aminopyridine instead of 2-aminothiazole, to give the titled product..

Yield: 35 %.

Mp: 176.5 - 178.0°C. -NMR (DMSO-dg d) : 2.95 (t, 2H) , 3.90 (q, 2H) , 6.73-

6.85 (m, 3H), 7.20-7.27 (m, 2H) , 8.08 (dd, IH) , 8.32 (d, IH), 9.49 (s, IH), 10.84 (s, H) , 11.33 (t, IH) . ¹³ C-NMR (DMSO-dg d) : 34.01, 46.30, 111.70, 113.26,

114.41, 115.70, 119.32, 129.35, 140.41, 141.29, 145.79, 152.29, 157.34, 179.07.

Example 358

N- 2-fl- ethvl)-2-pvrrolvlethvl)-N ¹ -(5-chloro-2- pvridinvl)thiourea 2-(Aminoethyl)-l-methylpyrrole and an isothiocyanate of 5-chloro-2-aminopyridine were condensed analogous to the procedures described in Example 105, to give the titled product. Yield: 78 %.

Mp: 169.5-170.0°C. iH-NMR (DMSO-dg d) : 3.01 (t, 2H) , 3.67 (s, 3H) , 3.93 (q, 2H), 6.00 - 6.02 (m, 2H) , 6.74 (ε, IH) , 7.32 (d,

1H), 7.97 (dd, IH), 8.27 (d, IH) , 10.76 (s, IH) , 11.36

(broad ε, IH) .

¹³ C-NMR (DMSO-dg d): 24.97, 33.19, 44.37, 106.22,

106.39, 114.02, 121.58, 123.70, 129.32, 138.70, 143.61, 152.05, 179.31.

Example 359

N-(2-(3-Methyl)phenethvl)- ^■ -(2-thiazolvl)thiourea (3-Methyl-phenyl)acetic acid was reduced with lithium aluminum hydride in tetrahydrofurane under reflux to 2-(3-methyl-phenyl)ethanol, which was further transformed to 2-(3-methyl-phenyl)ethylamine by the procedure deεcribed in Example 106. Condensation of this amine with the product of Example 103 and using the procedure deεcribed in Example 105, gave the titled product. ¹³ C-NMR (250 MHz, CDC1 ₃ ): δl78, 162, 138, 137, 137,

130, 128, 127, 126, 102, 47, 35, 22. Mp: 145 - 146°C.

Example 360

N- (2-(2-Ethoxv)Phenethvl)-N'- 12-(4- methvl)thiazolvl)thiourea In a manner analogouε to Example 105, 2-(2- ethoxyphenyl)ethylamine waε condensed with l-(2-amino- 4-methylthiazolyl)-l'-imidazole thiocarbonyl, which waε made in a similar way as described in Example 103, to give the titled product. iH-NMR (250 MHz, DMSO): δ7.32 - 6.73 (m, 5H, phenyl, thiazole), 4.09 (q, 2H, OCH2CH3), 3.86 (q, 2H, CH2NH) ,

2.97 (t, 2H, Ph-Ch2), 2.25 (s, 3H, thiazole-CH3) , 1.43

(t, 3H, OCH CH ₃ ) .

¹³ C-NMR (250 MHz, DMSO): δl76, 162, 157, 130, 128,

127, 120, 112, 107, 106, 63, 44, 29, 17, 15. Mp: 188 - 189°C.

Example 361 N-(2-(3-Ethoχy)phenethyl)-N'-(2-thiazolyl)thiourea 3-Hydroxybenzaldehyde (3.0 g, 24.6 mmol), ethyl iodide (5.9 ml, 73.8 mmol) and K2CO3 (3.4 g, 24.6 mmol) in 50 ml of acetone was stirred at +40°C for 6 h and at RT overnight. The mixture was filtered and evaporated. The product was purified by silica gel column chromatography (EtOAc/petroleum ether 15:100) to give 3-ethoxybenzaldehyde. Yield 2.91 g (79%). iH-NMR (250 MHz, CDCI3) : 9.97 (s, IH, CHO) , 7.45 - 7.14 (m, 4H, phenyl), 4.10 (q, 2H, CH2CH3), 1.44 (t, 3H, CH2CH3) .

By using the procedure of Example 151, 3- ethoxybenzaldehyde was transformed to 2-(3- ethoxyphenyl)ethylamine, which was reacted with the product of Example 103, following the procedure of Example 105 to give the titled product. iH-NMR (250 MHz, DMSO): δ7.60 (d, IH, thiazole), 7.30 - 6.93 ( , 4H, phenyl), 4.08 (q, 2H, OCH2CH3), 3.87 (q, 2H, CH2-NH) , 2.96 (t, 2H, phenyl-CH2), 1.42 (t, 3H, OCH2U3). Mp: 169 - 170°C.

Examole 362

N- (2-(2-Ethoxv-6-fluoro)phenethvl)-N ¹ -(2- thiaozolvl)thiourea 1) 3-Fluorophenol (20.0 g, 178.4 mmol), ethyl iodide (83.5 g, 535.2 mmol) and K ₂ C0 ₃ (49.3 g, 356.8 mmol) in 250 ml of acetone were stirred at 50°C overnight. The mixture was filtered 'and evaporated to give l-ethoxy-3-fluorobenzene. Yield 19.84 g (79%) . iH-NMR (250 MHz, CDCI3) : δ7.20 (q, IH, phenyl), 6.69 - 6.57 (m, 3H, phenyl), 4.00 (q, 2H, CH2CH3), 1.40 (t, 3H, CH CH ₃ ).

2) 1.6 M Butyl lithium in hexane (24 ml,

38.4 mmol) was added slowly (0.5 h) to a solution of l-ethoxy-3-fluorobenzene (5.0 g, 35.7 mmol) in 100 ml of dry THF at -65°C under nitrogen. The εolution waε εtirred at -65°C for 25 min. DMF (5.22 g, 71.4 mmol) was added dropwise to the solution. The mixture was allowed to warm to room temperature. 300 ml of ice was poured to this mixture and it waε extracted with diethyl ether. Diethyl ether waε waεhed with brine, dried over Na2Sθ4 and evaporated. The product waε purified by silica gel column chromatography

(EtOAc/petroleum ether 10:100) to give 2-ethoxy-6- fluorobenzaldehyde. Yield: 3.69 g (61 %) .

iH-NMR (250 MHz, CDCl ₃ ) : δ7.52 - 7.40, 6.80 - 6.64 (m, 3H, phenyl), 4.18(q, 2H, CH2CH3), 1.50 (t, 3H, CH2CH3) .

¹³ C-NMR (250 MHz, CDCI3) : δl88, 165, 161, 136, 109, ^' .5 ^' 108, 65, 14.

3) Following the procedure of Example 151, this aldehyde was transformed to 2-(2-ethoxy-6- fluorophenyl)ethylamine, which was condensed with the

10 product of Example 103, using the procedure of Example 105 to give the titled product. iH-NMR (250 MHz, DMSO): δ7.32 - 6.72 (m, 5H, phenyl, thiazole), 4.00 (q, 2H, CH2CH3), 3.78 (q, 2H, CH2-NH) , 2.92 (t, phenyl-CH2), 1.33 (t, 3H, CH ₂ CH ₃ ).

15

Example 363

N- 12-(3-Isopropoxv)phenethvl)-N'-(2-thiazolvl)thiourea

3-Isopropoxybenzaldehyde was prepared from 3-hydroxybenzaldehyde and isopropyl iodide analogous

20 to the procedure described in Example 361. By using the procedure of Example 151 this aldehyde was transformed to 2-(3-isopropoxyphenyl)ethylamine, which was reacted with the product of Example 103, following the procedure of Example 105 to give the titled 5 product. iH-NMR (250 MHz , DMSO) : δ 7 .44 - 6.84 (m, 6H, phenyl, thiazole) , 4.69 - 4.64 (m, IH, isopropoxy-CH) , 3 .87 (q, 2H, CH ₂ NH) , 2.96 (t, 2H, phenyl-CH2 ) , 1.36 - 1.32 ( , 6H, 2CH ₃ ) . 0

Example 364

N- ( 2- (5-Bromo-2-ethoxv) phenethvl-N' - (2- thiazolvl) thiourea

1) 5-Bromo-2-hydroxybenzylalcohol (5.0 g, 24.6 mmol), ethyl iodide (11.5 g, 73.8 mmol) and K2CO3

(3.4 g, 24.6 mmol) in 50 ml of acetone was stirred at +50°C overnight. The mixture was filtered and evaporated. The product waε purified by εilica gel column chromatography (EtOAc/petroleum ether 30:100) to give 5-bromo-2-ethoxybenzyl alcohol. Yield: 5.24 g (92 %) . iH-NMR (250 MHz , CDCI3 ) : δ 7 . 42 - 7 .31 (m, 2H, phenyl ) , 6.73 (d, IH, phenyl) , 4. 67 (d, 2H, £22"OH) , 4 .07 (q, 2H, £_Ϊ2 ^H 3 ) • i - ⁶⁰ <ε , IH, OH) , 1. 43 (t, 3H, CH2CH3 ) •

2) 5-Bromo-2-ethoxybenzyl alcohol (2.78 g, 12.0 mmol) and pyridinium dichromate (4.51 g, 12.0 mmol) in 120 ml of CH2CI2 waε εtirred at RT for 6 h. The mixture waε filtered, waεhed with H2O, 0.5 N HCl and brine and dried over Na2Sθ4. The product waε purified by εilica gel column chromatography (EtOAc/petroleum ether 10:100) to give 5-bromo-2- ethoxybenzaldehyde. Yield: 2.33 g (85 %) . iH-NMR (250 MHz, CDCI3): δlθ.4 (ε, IH, CHO) , 7.91 (d,

IH, phenyl), 7.60 (dd, IH, phenyl), 6.88 (d, IH, phenyl), 4.14 (q, 2H, CH2CH3), 1.51 (t, 3H, CH2CH3) .

3) Following the procedure of Example 151, the aldehyde was transformed to 2- (5-.bromo-2-

ethoxyphenyl)ethylamine, which was condensed with the product of Example 103, using the procedure of Example 105, to give the titled product. iH-NMR (250 MHz, DMSO): δ7.10 - 6.62 (m, 5H, phenyl, thiazole), 3.73 (q, 2H, CH ₂ CH ₃ ), 3.52 (q, 2H, CH ₂ NH) , 2.62 (t, 2H, phenyl-CH2), 1.07 (t, 3H, CH2CH3).

Example 365 N- 12- 12. -Dimethoxv)phenethvl)-N ¹ -(2-pvridvl)thiourea 2,5-Dimethoxy phenethylamine (0.36 g, 2.0 mmol) in 7 ml of DMF was added to a solution of 1,1- thiocarbonyldiimidazole (0.36 g, 2.0 mmol) in 7 ml of DMF at 0°C. After 5 minuteε 2-aminopyridine (0.19 g,

2.0 mmol) in 7 ml of DMF waε added at 0°C. ^* This mixture was refluxed at 150°C for 4 hours. After cooling to room temperature it was poured into ice-water and extracted with diethyl ether, dried over a2Sθ4 and the solvent was evaporated. The product was purified by silica gel column chromatography (EtOAc/petroleum ether 15:100). Yield: 0.24 g (39 %) . iH-NMR (250 MHz, CDCI3) : δ8.41 (broad S, IH, NH) , 8.04

(d, IH, pyridine), 7.61 (t, IH, pyridine), 6.94 - 6.67 ( , 5H, phenyl, pyridine), 4.03 (q, 2H, CH2 H) , 3.78 (s, 3H, CH3O) , 3.73 (s, 3H, CH3O) , 3.00 (t, 2H, phenyl-CH2) -

Examole 366 N- (2- (2-Ethoxy)phenethvl)-N'- (2-(5- bromo)pvridvl)thiourea In a manner analogous to Example 151, 2- ^' ethoxy phenethylamine was obtained from 2- ethoxybenzaldehyde.

2-Ethoxy phenethylamine (1.1 g, 6.7 mmol) in 20 ml of acetonitrile was added εlowly to a mixture of 1,1-thiocarbonyldiimidazole (1.32 g, 7.4 mmol) in 20 ml of acetonitrile at 0°C. The mixture was warmed to

RT and evaporated. 2-Amino-5-bromo-pyridine (1.63 g, 9.4 mmol) and this crude reaction mixture in 30 ml of DMF were refluxed for 6 h at 140°C. After cooling to room temperature the reaction mixture was poured into ice-water and extracted with diethyl ether, dried over Na2Sθ4 and the solvent was evaporated. The product was purified by silica gel column chromatography (EtOAc/petroleum ether 15/100). iH-NMR (250 MHz, CDCl3)δ8.73 (broad ε, IH, NH) , 8.00 (d, IH,. pyridine) , 7.68 (dd, IH, pyridine), 7.26 - 7.16 (m, 2H, phenyl), 6.96 - 6.82 (m, 2H, phenyl), 6.68 (d, IH, pyridine), 4.03 (q, 2H, CH2CH3), 4.03 (q, 2H, CH2NH) , 3.02, (t, 2H, phenyl-CH2), 1.42 (t, 3H, CH2CH3) . ¹³ C-NMR (250 MHz, CDCl ₃ ) δl79, 157, 152, 146, 141, 131, 128, 127, 120, 113, 112, 111, 63, 46, 30, 15.

Example 367

N-(2-(2-Ethoxv-6- luoro)phenethvl)- '-(2- pyridyl)thiourea The starting material 2-(2-ethoxy-6- fluorophenyl)ethylamine was prepared as described in Example 362. Following the condensation procedure described in Example 366, and using 2-aminopyridine instead of 2-amino-5-bromopyridine, the titled product resulted. iH-NMR (250 MHz, CDCl3)δ8.00 (d, IH, pyridine), 7.58

(t, IH,.pyridine) , 7.14 (q, IH, pyridine), 6.91 - 6.59 ( , 4H, phenyl, pyridine), 3.95 (q, 2H, CH2CH3), 3.95

(q, 2H, CH2-NH) , 3.09 (t, 2H, phenyl-CH2), 1.39 (t, 3H, CH CH ₃ ) . ¹³ C-NMR (250 MHz, CDCl ₃ )δl79, 164, 153, 145, 138,

128, 128, 117, 112, 108, 107, 107, 64, 45, 22, 15.

Example 368 N-2-(2-Methoxv)phenethvl)-N'- 12- thiazolvl)methvlthioether Methyl iodide (0.425 g, 3.0 mmol) was added to a solution of N-(2-(2-methox )phenethyl)-N'-(2- thiazolyl)thiourea, (Example 94), (0.3 g 1.0 mmol) in 15 ml of DMF. The mixture was stirred at RT for 8 h. Methyl iodide was evaporated and the mixture was poured to ice, extracted with methylene chloride, dried over Na ₂ Sθ4 and evaporated. The product was purified by silica gel column chromatography (EtOAc/petroleum ether 10:100).

iH-NMR (250 MHz, CDCI3 ) : δ7.25 (d, IH, thiazole), 7.24

- 7.16 ^' (m, 2H, phenyl), 6.92 - 6.81 (m, 2H, phenyl), 6.70 (d, IH, thiazole), 3.79 (s, 3H, CH3O) , 3.57 (q, 2H, CH ₂ NH), 2.95 (t, 2H, phenyl-CH ₂ ), 2,46, (ε, 3H, SCH3 ) .

¹³ C-NMR (250 MHz, CDCI3): δl73, 162, 157, 137, 130, 127, 126, 120, 111, 110, 55, 43, 30, 13.

Example 369 N-(2-(2-Ethoxv- -fluoro)phenethvl)-N'-(2- (5- methvl)pvridvl)thiourea The εtarting material 2-(2-ethoxy-6- fluorophenyl)ethylamine waε prepared aε described in Example 362. Following the condensation procedure described in Example 366 and using 2-amino-5- methylpyridine instead of 2-amino-5-bromopyridine, the titled product resulted. iH-NMR (250 MHz, CDCI3): δ8.65 (broad s, IH, NH) , 7.83

(s, IH, pyridine), 7.41 (d, IH, pyridine), 7.22 - 7.05 (q, IH, phenyl), 6.73 - 6.58 (m, 3H, phenyl, pyridine ⁾ , 3.98 ⁽ q, 2H, £E2 ^CH 3 ⁾ ' ³ - ^{98 (} %> ^H - £U2 ^NH) •

3.07 ⁽ t, 2H, phenyl-£H2 ⁾ ■ - ²⁵ < ^s * ^3H - CH3), 1.40 (t,

3H, CH ₂ C£ ₃ ).

¹³ C-NMR (250 MHz, CDCI3): δl79, 168, 152, 145, 139, 127, 127, 126, 111, 108, 108, 107, 63, 44, 22, 17, 14.

Example 370 N-Phenethvl-N'- 12-(5-chloro)pvridvl)thiourea

The product from example 374 (0.3 g, 1.76 mmol) and phenethylamine (0.22 ml, 1.76 mmol) in 8 ml

of acetonitrile was stirred at RT for 0.5 h. The mixture was filtered. The precipitate was dried and recrystallized from acetonitrile. Mp: 152 - 153°C. iH-NMR (250 MHz, DMSO): δ8.20 (d, IH, pyridine), 7.98

(dd, IH, pyridine), 7.45 - 7.40 (m, 5H, phenyl), 7.27 (d, IH, pyridine), 3.94 (q, 2H, CH ₂ NH) , 3.04 (t, 2H, phenyl-CH2) .

¹³ C-NMR (250 MHz, DMSO): δl79, 152, 143, 139, 139, 129, 128, 126, 124, 114, 46, 34.

Example 371

N-(cis-(Prl.)-2-Phenylcyclopropyl)-N/'-(2- pyridyl)thiourea - cis-(D,L)-2-Phenylcyclopropylamine (Example

348) and 2-ammopyridine were reacted according to the procedures of Examples 93 and 94, using 2- aminopyridine instead of 2-aminothiazole, to give the titled product. iH-NMR: 1.19 - 1.27 (m, IH) , 1.45 - 1.55 (m, IH) , 2.50 (q, IH), 3.67 - 3.78 ( , IH) , 6.73 - 6.78 (m, 2H) , 7.27 - 7.34 (m, 5H) , 7.41 - 7.53 (m, 2H) , 1.08 (broad s, IH). ^{" 13} C-NMR: 12.4, 21.9, 34.6, 111.8, 117.3, 126.5, 128.2, 129.1, 136.5, 138.2, 145.1, 153.0, 180.3. Mp: 184.5 - 186.0°C.

Example 372 N-(5-Chloro-2-Pvridvl)-N'-(cis-(D.L)-2- phenvlcvclopropvl)thiourea cis- (D,L)-2-Phenylcyclopropylamine (Example 348) and an activated derivative of 2-amino-5- chloropyridine, i.e. 1-(2-amino-5-chloropyridine)-1'- imidazole-thiocarbonyl, were condensed using the procedures of Example 105 to give the titled product. iH-NMR (CDCI3): 1.19 - 1.26 (m, IH) , 1.46 - 1.55 (m, IH), 2.51 (q, IH) , 3.64 - 3.74 (m, IH) , 6.74 (dd, IH) , 7.30 - 7.40 (m, 6H) , 7.47 (dd, IH) , 9.2 (broad s, IH) ,

10.9 (broad s, IH) .

¹³ C-NMR (CDCI3): 12.4, 22.0, 34.7, 112.7, 124.7,

126.8, 128.4, 129.2, 136.5, 138.3, 143.9, 151.1, 180.2.

Mp: 194 - 195.5°C.

Example 373 N-(5-Bromo-2-pvridvl)-N ¹ -(cis- (D.L)-2- phenvlcvclopropvl)thiourea cis-(D,L)-2-Phenylcyclopropylamine (Example 348) and 2-amino-5-bromopyridine were reacted according to the procedures of Examples 93 and 94, using 2-amino-5-bromopyridine instead of 2- aminothiazole, to give the titled product. iH-NMR (CDCI3): 1.19-1.26 (m, IH) , 1.47 - 1.55 (m,

IH), 2.52 (q, IH) , 3.66 - 3.75 (m, IH) , 6.66 (dd, IH) , 7.27 - 7.41 (m, 5H) , 7.47 (d, IH) , 7.60 (dd, IH) , 8.98 (broad s, IH) , 10.88 (broad ε, IH) .

¹³ C-NMR (CDC1 ₃ ) : 12.4, 22.0 , 34.7 , 112.3 , 113 .1, 126.8, 128.4, 129.2, 136.5, 140. 9 , 146.2 , 151.3 , 180 .2.

Mp: 204 - 205°C Anal, calcd. for C, 51.7; H, 4.05; N, 12.07. Found C, 51.5; H, 4.0; N, 12.0.

Example 374

5-Chloropvrid-2-vlisothiocvanate 2-Amino-5-chloropyridine (10.28 g) was added in portions, with stirring, over a period of 25 minutes to a solution of thiocarbonyl diimidazole (14.26 g) in acetonitrile (100 ml) at ambient temperature. The stirring was continued and the solution/suεpension was left at ambient temperature for a few hours. The precipitate was filtered and washed with acetonitrile (3 x 25 ml) . The solid residue was dissolved in hot acetone and filtered. The acetone solution was evaporated in vacuo, the residue was dissolved in hot ethyl acetate and filtered through a pad of silica (diam. 7 c m x 3 cm) . The silica was washed with another portion of hot ethyl acetate. The combined solutions were evaporated in vacuo to yield a crude product (5 g) of the titled product. iH-NMR (DMSO): 7.54 (d, J = 8.7 Hz, IH) , 8.17 (dd, J = 2.7, 8.7 Hz, IH) , 8.63 (d, J = 2.7 Hz, IH) . ¹³ C-NMR (DMSO): 121.4, 130.1, 139.4, 140.7, 143.9, 148.6.

Examole 375 N-cis-(D.L)-(2-(3-Methoxv)-phenvlcvclopropvl)-N -(2- thiazolvl)thiourea The starting material, 3-methoxystyrene, was prepared in following manner:

To a mixture of 26.2 g (73.4 mmol) of methyl triphenylphosphonium bromide in 200 ml of THF cooled to 0°C, was added 42 ml (2M in THF, 82 mmol) of a lithium _, diisopropyl amide εolution over 30 min. The mixture waε εtirred for an additional 2 hours then 10 g (73.4 mmol) 3-methoxybenzaldehyde was added dropwise over 25 min. The reaction mixture waε εtirred for one hour at room temperature and then heated under reflux for 14 hourε. After cooling the εolvent was evaporated in vacuo, the residue was diluted with 200 ml diethyl ether and the precipitate was removed by filtration. The ether solution was washed with water, dried with Na2Sθ4 and evaporated in vacuo. The product was purified by silica gel column chromatography (diethyl ether/cyclohexane) . Yield: 2.83 g (29 %) . iH-NMR (CDCl3)d: 7.24 (t, J = 8.1 Hz, IH, Ph) , 7.21-

6.98 (m, IH, Ph) , 6.95 (t, J = 2.3 Hz, IH, Ph) , 6.81 (ddd, J. = 8.1 Hz, 2.3Hz, 0.9 Hz, IH, Ph) , 6.69 (dd, J = 17.6 Hz, 10.8 Hz, IH, CH) , 5.74 (dd, J = 17.6 Hz, 0.9 Hz, IH, CH2), 5.25 (dd, J = 10.8 Hz, 0.9 Hz, IH,

CH2) , 3.81 (ε, 3H, CH ₃ ) .

¹³ C-NMR (CDCl ₃ )d: 159.81 (C-3), 139.04 (C-l), 136.79

(C-a), 129.51 (C-5), 118.92 (C-6), 114.15 (C-4) , 113.46 (C-2), 111.53 (C-b) , 55.22 (0-CH ₃ ).

The titled compound was prepared in a manner analogous to the procedures described in Examples 348 and 349, using 3-methoxystyrene instead of styrene. iH-NMR (CDCl3)d: 7.26-7.19 (t and d, 2H, o and thiazole), 6.90-6.69 (m, 4H, o, m, p, thiazole), 3.76 (s, _, 3H, OMe), 3.65 (broad s, IH, NH-Cfi-), 2.50 (q, IH, Ph-Cfi-), 1.22 (m, 2H, Cyclopropyl).

¹³ C-NMR (CDCl ₃ )d: 178.6 (C=S) , 161.3 (thiazole), 159.8 (£-OMe) , 137.8 (Ph), 137.7 (thiazole), 129.5 (Ph) , 121.6 (Ph) , 114.5 (Ph) , 112.8 (Ph) , 111.0 (thiazole), 55.2 (O-C.H3), 44.0 (£H-NH), 22.0 (£H-Ph) , 12.1 (£H ₂ ) .

Exam l 37 N-cis-(P,^)- (2-( -Fluorophenyl)cyclopropyl)-N -(2- . thiazoyl thiourea

In a manner analogous to the procedures described in Examples 348 and 349 and using 2- fluorostyrene instead of styrene, the titled product was prepared. iH-NMR (CDCl3)d: 7.32-7.05 (m, 4H) , 6.91-6.64 (m, 2H) ,

3.68 (broad s, IH, Cfi-NH) , 2.57 (q, IH, CH-Ph) , 1.70-

1.40 (m, 3H), 1.31-1.18 (m, IH) . ⁱ³ C-NMR (CDCl3)d: 178.8 (C=S) , 162.5 and 160.5 (£-F,

Ph) , 161.2 (thiazole), 137.4 (thiazole), 129.9 (Ph) , 128.5 and 128.4 (m to F,Ph), 124.0 (p to F, Ph) 115.4 and 115.1 ( o to F, Ph) , 111.8 (thiazole), 33.8 (£H- NH), .16.4 (£H-Ph) , 12.2 (£H ) .

Example 377 N-(2-r3-(6-Chloro-2-methoxv)Pvridvl1ethvl)-N -(2-(5- bromo)pvridvl)thiourea The starting material, 3-(2-aminoethyl)-6-chloro- 2-methoxypyridme, was prepared in following manner:

To a solution of 1.0 g (7.0 mmol) of 2- chloro-6-methoxypyridme in 20 ml of dry THF cooled to -78°C was added 10.9 ml (1.6 M in hexanes, 17.4 mmol) n-BuLi under an atmosphere of nitrogen. The temperature of the mixture was allowed to raiεe to

-40°C before an addition of 4 ml ethylene oxide in 6 ml ether. The mixture was warmed to room temperature, 50 ml water was added and the aqueous layer was separated and extracted with 2 x 100 ml EtOAc. The organic extracts were combined, washed once with water, dried with Na2Sθ4, and concentrated in vacuo.

The crude material was purified by dry column flash chromatography (hexane/EtOAc ) to afford 0.22 g of 3- (2-hydroxyethyl)-6-chloro-2-methoxypyridine as a yellowish oil.

To a solution of 0.20 g (0.8 mmol) of 3-(2- hydroxyethyl)-6-chloro-2-methoxypyridine in 10 ml of dry CH2CI2 cooled to -50°C was added 0.18 ml (0.8 mmol) trifluoromethanesulfonic anhydride under an atmoεphere of nitrogen. The mixture was stirred for

30 min at thiε temperature and an additional 10 min at -78°C before a rapid addition of 30 ml of cold (-78°C) NH3 (1) . The mixture waε stirred for 15 min at room temperature, and then concentrated in vacuo to afford 1.0 g of crude 3-(2-aminoethyl)-6-chloro-2-

methoxypyridine as a trifluoromethanesulfonic acid salt. iH-NMR (CD ₃ OD)d: 7.66 (d, IH, Py) , 7.03 (d, IH, Py) , 4.04 (s, 3H, CS3-O) , 3.24 (t, 2H, CH ₂ -N) , 3.03 (t, 2H,

The crude 3-(2-aminoethyl)-6-chloro-2- methoxypyridine was condensed with N-{2-(5- bromo)pyridyl-N'-(1-imidazolyl)thiourea in a manner analogous to Example 103, to give the titled product. 1H-NMR (CD θD)d 11.25 (broad s, IH, N-H) , 10.82

(broad s, IH, N-H), 8.31 (s, IH, Br-Py) , 8.08 (d, IH, Br-Py) , 7.89 (d, IH, Cl-Py) , 7.21 (m, 2H, Cl- and Br- Py), 3.96 (m, 5H, CH2-N, and CH3-O) , 3.03 (t, 2H, CH2-

Py). ⁱ³ C-NMR (CD ₃ OD)d: 179.45 (C=S) , 161.43 (Cl-C in Py) ,

152.41 (Br-C in Py), 145.92 (Cl-Py), 145.14 (MeO-C- Py), 141.89 (Br-Py), 141.51 (Br-Py), 120.32 (Cl-Py), 116.48 (Cl-Py), 114.60 (Br-Py), 111.95 (Br-Py), 55.10 (CH3-O), 43.76 (CH -NH) , 27.89 (CH ₂ -Ph) .

Exam le 7$ N-f2-T3-(2-Fluoro)pvridvl1ethvl)-N'-(2-(5- bro o)pvridvl)thiourea The s arting material, 3-(2-aminoethyl)-2- fluoropyridine, was prepared in following manner:

A solution of 2.0 g (20.6 mmol) of 2- fluoropyridine in 25 ml of dry THF was cooled to -78°C was added 25 ml (1.6 M in hexanes, 41.6 mmol) n-BuLi under an atmosphere of nitrogen. The mixture was stirred at this temperature for 2 hours before an addition of 4 ml ethylene oxide in 7 ml ether. The

mixture was warmed to room temperature, 150 ml ether and 25 ml acetone waε added. The precipitate was removed by filtration, and the filtrate was concentrated to 1/3 of volume in vacuo. The remainder was washed once with brine, dried with Na2S0 , and

.concentrated in vacuo. The crude material was purified by dry column flash chromatography (hexane/EtOAc) to afford 0.42 g of 3-(2-hydroxyethyl)- 2-fluoropyridine as a brown oil. To a solution of 0.20 g (1.42 mmol) of 3-(2- hydroxyethyl)-2-fluoropyridine in 8 ml of dry CH2CI2 cooled to -40°C was added 0.18 ml (0.8 mmol) trifluoromethanesulfonic anhydride under an atmosphere of nitrogen. After stirring for 30 min at -40°C, 30 ml of cold (-78°C) NH3 (1) was added. The mixture was stirred, for 30 min at -40°C, and then concentrated in vacuo to afford 1.03 g of crude salt which was washed twice with 20 ml diethyl ether to yield 0.82 g of 3- (2-aminoethyl)-2-fluoropyridine as a trifluoromethanesulfonic acid salt.

1H-NMR (CD3θD)d: 8.23 (d, IH, Py) , 7.98 (t, IH, Py) , 7.40 (m, IH, Py), 3.30 (t, 2H, CH2-N) , 3.12 (t, 2H, CH ₂ -Py) .

The crude 3-(2-aminoethyl)-2-fluoropyridine was condensed with N-(2-(5-bromo)pyridyl-N'-(1- imidazolyl)thiourea in a manner analogous to example

103, to give the titled product. iH-NMR (CD3θD)d: 8.31 (d, IH, Br-Py), 8.23 (m, IH, F-

Py) , 8.06 (m, 2H, Br-and F-Py) , 7.45 (m, IH, F-Py) ,

7.23 (d, IH, Br-Py), 4.00 (q, 2H, Cfi2- ) , 3.14 (m, 2H,

Cfi ₂ -Py) .

1 ³ C-NMR (CD ₃ OD)d: 179.59 (C=S) , 163.53 and 159.78 (F-£ i Py), 152.39 (Br-Ey) , 145.87 (F-Py) ,145.63 and 142.38 (F-Py), 142.28 (Br-Py) ,141.54 (Br-Py), 122.31 and 122.26 (F-Py), 120.94 and 120.45 (F-Py), 114.59 (Br-Py)„ 111.97 (Br-Py), 44.29 (£H ₂ -NH) , 27.32 (£H ₂ -

Ph) .

Example 7

N- 12- 12.6-difluoro)phenethvl)-N -(2-benzothiazolvl) thiourea In a manner analogous to Example 105, 2,6- difluorophenethylamine was condensed with l-(2- aminobenzothiazole)-l'-imidazole thiocarbonyl which was made in similar way as described in Example 103. The titled compound crystallized from methylene chloride. 1H-NMR (CDCI3 + CD3OD) d: 7.64 (m, 2H, benzo) , 7.38 (m, 3H, DFPh, benzo), 7.24 (t, 2H, DFPh), 4.04 (t, 2H, CH2), 3.15 ( t, 2H, CH2) .

Example 380 N-(2-(2r6-di luoro)phenethyl)-N'-(2-(4,5- dimethyl)thiazolyl)thiourea

In a manner analogous to Example 105, 2,6- difluorophenethylamine was condensed with l-(2-amino- 4,5-dimethylthiazole)-l'-imidazole thiocarbonyl which was made in a similar way as described in Example 103.

The titled compound crystallized from methylene chloride. iH-NMR (CDCI3) d: 7.21 (m, IH, DFPh), 7.15 (t, 2H,

DFPh), 4.00 (q, 2H, CH2), 3.09 (t, 2H, CH ₂ ) , 2.22 (d, J=0.5Hz, 3H, Me), 2.08 (d, J=0.6Hz, 3H, Me).

Exam le §1 N- (2-(2-fluoro)phenethyl)-N'-(2-(6- fluorobenzothiazolvl)thiourea In a manner analogous to Example 105, 2- fluorophenethylamine was condensed with 1-(2-amino-6- fluorobenzothiazole)-1'-imidazole thiocarbonyl which was made in a similar way as described in Example 103. The titled compound crystallized from methylene chloride.

1H-NMR(CDC13 + CD3OD) d: 7.53-7.06 (m, 7H, benzo, FPh), 4.04 (t, 2H, CH ₂ ), 3.10 (t, 2H, CH ₂ ).

Example 382 . N-(2-( ,6-djflucre)phenethyl)-N -(2-(6- fl orobenzothiasolyl)t iourea In a manner analogouε to Example 105, 2,6- difluorophenethylamine was condensed with l-(2-amino- 6-fluorobenzothiazole)-1'-imidazole thiocarbonyl which waε made in a εimilar way as described in Example 103. The titled compound crystallized from methylene chloride.

1H-NMR *(CDCl3 + CD ₃ OD) d: 7.52 (m, IH, benzo), 7.40

(m, IH, benzo), 7.14 (m, 2H, DFPh, benzo), 6.88 (m, 2H, DFPh), 4.02 (t, 2H, CH2) , 3.14 (t, 2H, CH2).

Exa ple 83

N- 12-(2-fluoro) henethvl)-N ¹ - 12- benzothiazolvl)thiourea In a manner analogous to Example 105, 2- fluorophenethylamine was condensed with l-(2- aminobenzothiazole)-l ^r -imidazole thiocarbonyl which was made in a similar way as described in Example 103, The titled compound crystallized from methylene chloride. 1H-NMR (CDCI3 + CD3OD) d: 7.63 (q, 2H, benzo), 7.32

(m, 4H, benzo, FPh), 7.10 (q, 2H, FPh), 4.06 (t, 2H, CH ₂ ), 3.11 (t, 2H, CH ₂ ) .

Example 384 N-(2-(2-fluoro)phenethyl) -W-(2-(4- methylthiazolyl)thiourea In a manner analogous to Example 105, 2- fluorophenethylamine was condensed with l-(2-amino-4- methylthiazole)-!'-imidazole thiocarbonyl which was made.in a similar way as described in Example 103. The titled compound crystallized from methylene chloride.

1H-NMR (CDCI3 + CD3OD) d: 7.23 (m, 2H, FPh), 7.06 (m,

2H, FPh), 6.34 (d, J=lHz, IH, thiazole), 3.99 ( t, 2H, CH2), 3.05 (m, 2H, CH2), 2.20 (d, J=0.9Hz, 3H, Me).

Example 385 N- 12- 12.6-difluoro)Phenethvl)-N'- 12- 14- ethylthiazolyl)thiourea In a manner analogous to Example 105, 2,6- difluorophenethylamine was condensed with 1-(2-amino-

4-methylthiazole)-l'-imidazole thiocarbonyl which was made in a similar way as described in Example 103. The titled compound crystallized from methylene chloride. iH- MR (CDC1 ₃ + CD3OD) d: 7.19 (m, IH, DFPh), 6.87 (t, 2H, DFPh), 6.35 (s, IH, thiazole), 3.98 (t, 2H, CH ₂ ), 3.09 (t, 2H, CH ), 2.22 (s, 3H, Me).

Example 386 N-(2.2-dimethyl-2-(2-chloro-6-fluoro)phenethvl)-N -(2- thiazolvl)thiourea A solution of 2-chloro-6-fluorophenyl acetonitrile (1.69 g, 10 mmole) in dry THF (70 ml) was cooled to -60°C, and lithium diisopropylamide (5.25 ml, 10.5 mmole) waε added. After 30 min, methyl iodide (0.68 ml, 11 ml ) was added into the reaction mixture, and the reaction was slowly warmed to 0°C, and kept at 0°C for 1 hr. Then it was cooled to -60°C again, and more lithium diisopropylamide (6 ml, 12 mmole) was added. After 30 min, methyl iodide (1.87 ml, 30 mmole) was added. The reaction mixture was allowed to warm to room temperature and kept there for 2 hr after which it was poured into a sodium hydrogen carbonate solution, and extracted with chloroform. The organic phase was washed with water, dried, and the solvent was evaporated in vacuo. The product 2,2- dimethyl-2 (2-chloro-6-fluorophenyl) acetonitrile (1.07 g) was iεolated by silica gel column chromatography. iH-NMR (CDCI3) d: 7.25 ( m, 2H, Ph) , 7.03 ( m, IH, Ph) , 1.98 (s, 3H, Me ), 1.96 (s, 3H, Me).

The 2,2-dimethyl-2-(2-chloro-6- fluorophenyl)ethylamine was obtained by reduction of 2,2-dimethyl-2(2-chloro-6-fluorophenyl) acetonitrile with cobalt chloride and sodium borohydride according to the method described by L.S. Heizman in J. Am. Chem. Soc. _r 104, p.6801, (1980). It was then condensed with 1-(2-aminothiazole)-1'-imidazole thiocarbonyl in the analogous manner to Example 105. The titled compound was iεolated by εilica gel column chromatography. iH-NMR (CDC1 ₃ ) d: 7.35-7.09 (m, 3H, Ph) , 6.95 ( d, IH, thiazole), 6.73 ( d, IH, thiazole), 4.09 (d, 2H, CH ₂ ) , 1.50 ( s, 6H, Me ) .

E a ?7

N- 2-(5-bromo-2-methoxy)phenethyl)-N'-(2- 14- methylthiazolyl)thiourea In a manner analogous to Example 105, 5- bromo-2-methoxyphenethylamine was condensed with l-(2- amino-4-methylthiazole)-I'-imidazole thiocarbonyl which was made in a similar way as described in Example 103. The titled compound crystallized from methylene chloride. iH-NMR (CDCI3 + CD3OD) d: 7.31 (d, IH, Ph) , 7.29 (s, IH, Ph), 6.72 (d, IH, Ph) , 6.34 (s, IH, thiazole), 3.95 (t, 2H, CH2), 3.79 (s, 3H, MeO), 2.96 (t, 2H, CH ₂ ), 2.23 (s, 3H, Me) .

Examole 388

N-(2-(5-bromo-2-methoxy)phenethyl) -N'-(2- (4- cvanothiazolvl)thiourea

In a manner analogous to Example 105, 5- bromo-2-methoxyphenethyl-amine was condensed with 1-

(2-amino-4-cyanothiazole)-1' -imidazole thiocarbonyl which was made in a similar way as described in

Example 103. The titled compound was purified by silica gel column chromatography. 1H-NMR (CDCI3 + CD3OD) d: 7.51 (thiazole), 7.32 (d,

IH, Ph) , 7.27 (s, IH, Ph) , 6.76 (d, IH, Ph) , 3.90 (t, 2H, CH2), 3.83 (S, 3H, MeO), 2.97 (t, 2H, CH2).

Example 389 N-(2-( ,6-dif uoro) henethy )- '-(2-(4- cvanothiazolvl)thiourea In a manner analogous to Example 105, 2,6- difluorophenethylamine was condensed with l-(2-amino- 4-cyanothiazole)-1'-imidazole thiocarbonyl which was made in a similar way as described in Example 103. The titled compound crystallized from methylene chloride.

(CDCI3 + CD3OD) d: 7.51 (s, IH, thiazole), 7.22 (m, IH, DFPh), 6.90 (t, 2H, DFPh), 3.93 (t, 2H, CH2) , 3.08 (s, 2H, CH2).

Example 390

N-(2-(2, -difluoro)phenethyl)-IT-(2- i idazolyl)thiourea In a manner analogous to Example 93, using 2,6-difluorophenethylamine and 2-aminoimidazole, the titled compound was obtained. iH-NMR (DMSO + D2O) d: 7.28 (m, IH, DFPh), 7.02 (t,

2H, DFPh), 6.78 (broad, IH, imidazole), 6.62 (broad, IH, imidazole), 3.79 (t, 2H, CH2) , 2.97 (t, 2H, CH ₂ ) .

Example 391

N-(l-amino-2-f5-imidazolvl)-ethvl)-N--(2-(5-methvl)- thiazolyl)thiourea 1-(2-(5-methyl)-aminothiazole-1'- imidazolethiocarbonyl (prepared as deεcribed in

Example 103, using 2-amino-5-methylthiazole instead of 2-aminothiazole) (4.06 mmol, 910 mg) and histamine (4.05 mmol, 450 mg) in dimethylformamide (10 ml) waε heated to 50°C for 3 hrε.* The mixture was concentrated and partitioned between ethyl acetate and saturated aqueous sodium bicarbonate. The organic layer was dried over MgSθ and concentrated to give the titled compound in 43 % yield (463 mg) . iH NMR -(250 MHz, DMSO-dg) δ2.18 (s, 3 H) , 2.80 (m, 2 H), 6.57 (s, I H), 6.90 (s, 1 H) , 7.60 (s, 1 H) .

Example 392 1-(2-Amino-5-bromopvridvl)-1--(imidazolvl)thiocarbonyl

A mixture of 2-amino-5-bromopyridine, 97% (25.0 g, 140 mmol) and l,l'-thiocarbonyldiimidazole,

90% (27.72 g, 140 mmol) in 300 mol of acetonitrile waε εtirred at ambient temperature overnight and then filtered. The precipitate waε dried in vacuo to give the titled compound as a crude product which was εtored and uεed for further condensations with various phenethylamines. Yield: 37.5 g (95 %) .

Example 393 1- (5-chloropyrid-2-vl-thiocarbamoyl)imidazole

In a 500 ml reaction-flask, N,N- thiocarbonyl-dii idazole (60.0 g, 337 mmol) was dissolved in acetonitrile (400 ml) at 50°C with stirring. The solution was then cooled to 20°C. 2- Amino-5-chloropyridine (43 g, 337 mmol) was then added.

The εolution was stirred for 35 minutes and kept at ambient temperature over night. The solution was filtered and the crystalline mass consiεted of a mixture of needleε and pelletε. The pelletε were εeparated mechanically and purified by fluidization with a hair-dryer to give the titled product.

1H-NMR DMSO-dg δppm 7.1-7.2 (2H, ε, imid) 7.5-7.6 (IH, d, orto-coupling, pyr.) 7.9-8.0 (IH, ε, imid.) 8.1-8.2 (IH, d,d, pyr.) 8.6-8.7 (IH, d, meta-coupling, pyr.)

Examole 394 N-2-(2.5-dimethoχyphenvlethvl)- ¹ -(2-(6- fluorobenzothiazolvl) )thiourea 450 mg 2,5-dimethoxyphenethylamine (2.5 mmol) and 740 mg l-((2-(6- fluoro)benzothiazolyl)thiocarbamoyl)imidazole (2.5 mmol) (Example 80) in 5 ml acetonitrile were refluxed for one half hour. The mixture was cooled, and crystals were filtered off. Recrystallization from a mixture of ethanol and dimethylformamide gave 640 mg of the pure product as very fine needles. Mp: 196°C iH-NMR: 3.00 2H (t) , 3.77 3H (s) , 3.843H (s) , 3.912H (m), 6.91-7.03 3H (m) , 7.38 IH (m) , 7.70 IH (m) , 7.94 IH (m), 9.9 IH broad singlet, 12.0 IH broad singlet Analysis C18H18FN3O2S2: calculated C 55.22 H 4.63 N

10.73; found: C 55.3 H 4.70 N 10.75

Example 395 N-2- (-2.5-dimethoχyphenvlethvl)-N'-(2-(4- methvlthiazolvl) )thiourea 1000 mg (4.46 mmol) l-(2-(4- methylthiazolyl)thiocarbamoyl)imidazole (prepared analogously to 1-(2-thiazolyl)thiocarbamoyl)imidazole described in Example 103) and 800 mg 2,5- dimethoxyphenethylamine (4.42 mmol) in 7 ml acetonitrile were refluxed for one half hour. The mixture was cooled to 0°C, crystals were filtered off, rinsed with acetonitrile and dried. Recrystallization

from ethanol-dimethylformamide gave 1.42 g of the pure product.

Mp: 210°C iH-NMR (DMSO-dg): 2.27 3H (s) , 2.96 2H (t) , 3.78 3H (ε), 3.83 3H (s), 3.84 2H (m) , 6.73 IH (ε), 6.85-7.04 3H (m) Analyεis C15H19N3O2S2: calculated C 53.39 H 5.67 N

12.45; found: C 53.1 H 5.65 N 12.35

Example 96

N-2-(-2.5-αimethp yphenethyl)-N'-(2-(2- benzothiazolvl) )thiourea 556 mg 1-(2-benzothiazolyl)thiocarbamoyl) imidazole (2 mmol) (Example 66) and 362 mg 2,5- dimethoxyphenethylamme (2 mmol) in 5 ml acetonitrile were refluxed for one half hour. Recrystallization from ethanol-dimethylformamide gave 565 mg pure product. iH-NMR (DMSO-dg): 3.02 2H (t) , 3.77 3H (s) , 3.85 3H (ε), -3.93 2H (m) , 6.92-7.04 3H (m) , 7.38 IH (m) , 7.53 IH (m), 7.70 IH (m), 8.01 IH (m) Analyεis C18H19N3O2S2: calculated C 57.88 H 5.13 N

11.25; found: C 57.95 H 5.15 N 11.25

Example 397

N-2-(2.6-dichlorophenvlethvl)-N'- (2-thiazolvl)thiourea 9.3 g 2,6-Dichlorophenylacetonitrile (50 mmol) in 50 ml diethylether waε added dropwiεe to a mixture of 5 g lithium aluminum hydride in 200 ml ether. The mixture was heated to reflux, and reaction was allowed to take place for 2 hours. The mixture

was cooled to room temperature, and 5 ml water was added dropwise, followed by 5 ml 25 % sodium hydroxide in water. 10 ml water was then added, and the mixture waε filtered. 10 ml acetic acid was added rapidly to the stirred filtrate. The 2,6- dichlorophenethylammonium acetate that precipitated was filtered off and dried.

500 mg 2,6-dichlorophenethylammonium acetate (2 mmol), 0.42 g l-(2-aminothiazole)-1'-imidazole thiocarbonyl (Example 103) and 0.5 g diisopropylethylamine were mixed in 5 ml acetonitrile and refluxed for 30 minuteε. The mixture was then kept at 0°C for 17 hours and the crystalε were filtered off. Recrystallization from acetonitrile gave 265 mg of the titled product. iH-NMR (DMSO-dg): 3.3 2H (t) , 3.9 2H (m) , 7.2 IH (d) ,

7.35-7.6 4H (m) .

Example 398 κ-2- (2r6-dich orophenylethy ) -ψ-(2-(4- ethylthiazolyl)) hiourea

500 mg 2,6-dichlorophenylethylammonium acetate (2 mmol) (Example 397), 0.48 g l-(2-(4- methylthiazolyl)thiocarbamoyl)imidazole (prepared analogously to 1-(2-thiazolyl)thiocarbamoyl)imidazole described in Example 103) (2 mmol) and 0.5 g diisopropylethylamine were mixed in 5 ml acetonitrile and refluxed for 30 minutes. The mixture was cooled and crystals were filtered off. Recrystallization from acetonitrile gave 598 mg of the titled product.

1H-NMR (DMSO-dg): 2.2 3H (s) , 3.3 2H (t) , 4.0 2H (m) , 6.7 IH (s) , 7.4 IH (m) , 7.5 2H (m) , 9.8 IH broad singlet, 11.7 IH broad singlet Analysis C13H13CI2N3S2: calculated C 45.09 H 3.78 N 12.13; found: C 45.45 H 3.9 N 12.55

Example 399 N-(-2-(2.6-dichlorophenvl)ethvl)-N--(2- benzothiazolyl)thiourea 500 mg 2, 6-dichlorophenylethylammonium acetate (2 mmol) (Example 397), 0.55 g l-(2- benzothiazolyl)thiocarbamoyl) imidazole (2 mmol) (Example 66) and 0.5 g diisopropyl-ethylamine were mixed in 5 ml acetonitrile and refluxed for 30 minutes. The mixture was cooled and crystals were filtered off. Recrystallization from acetonitrile gave 497 mg of the titled product. IH-NMR (DMSO-dg) 3.3 2H (t) , 4.0 2H (m) , 7.3- 7.7 6H

(m) , 8.0 IH (d) , 10.0 IH broad peak, 12.1 IH broad peak.

Analysis Cι Hi3Cl2N3S2: calculated C 50.26 H 3.43 N

10.99; found: C 50.3 H 3.45 N 11.1

Example 400 N- 2-(2.6-dichlorophenvl)ethvl)-N--(2-(6-

(fluorobenzothiazolvl) )thiourea 500 mg 2,6-dichlorophenylethylammonium acetate (2 mmol) (Example 397), 0.59 g l-((2-(6- fluoro)benzothiazolyl)thiocarbamoyl) imidazole (2 mmol) (Example 80) and 0.5 g diisopropylethylamine

were mixed in 5 ml acetonitrile and refluxed for 30 minutes. The mixture was cooled and crystalε were filtered off. Recrystallization from acetonitrile gave 548 mg of the titled product. iH-NMR (DMSO-dg): 3.4 2H (t) , 4.0 2H (m) , 7.3-7.4 2H

(m) , 7.5-7.72H (m) , 8.0 IH (m) , 9.8 IH broad peak,

12.0 IH broads peak.

Analyεiε CιgHi2Cl2FN3S ₂ calculated C 48.00 H 3.02 N

10.50; found: C 48.25 H 3.1 N 10.6

Example 401 N- 12- (2.6-difluoro-3-methoxyphenyl)ethvl)-N'-(-2- thiazolvl)thiourea 6.25 ml 1.6M n-butyl lithium in hexane waε added dropwise to a solution of 10 mmol 2,4- difluoroanisole in 30 ml diethyl ether. The mixture was kept at -65°C during the addition. 3 ml Dimethylformamide was then added, and the mixture waε εlowly (lh) allowed to warm to room temperature. The mixture was poured into a separation funnel containing 50 ml ice-water. The ether layer waε separated, washed with 50 ml water and dried (Na2S04) . The solvent was evaporated, and the residue was redissolved in 50 ml ethanol. 2 g Ammonium acetate and 3 ml nitro ethane were added and the mixture was refluxed for 3 hours. The solvent was evaporated, and the residue was partitioned between 50 ml dichloromethane and 50 ml water. The organic layer was dried, and the solvent was evaporated. Crystallization from cold ethanol gave 480 mg brown

cryεtalε of l-nitro-2 (2 , 6-difluoro-3- methoxyphenyl)ethene. iH-NMR (CDC1 ₃ ): 3.9 3H (s), 6.9-7.1 2H (m) , 7.8 IH

(d), 8.1 IH (d) . 420 mg l-nitro-2-(2,6-difluoro-3- methoxyphenyl)ethene was dissolved in 50 ml tetrahydrofurane and added dropwise under stirring to a solution of 2 g lithium aluminum hydride in 50 ml tetrahydrofurane. The mixture was refluxed for 3 hours. The product amine was worked-up by the dropwise addition of 2 ml water followed by 2 ml 25% sodium hydroxide in water followed by 4 ml water.

The mixture was then filtered. The filtrate was extracted with 2 x 20 ml 1 M HCl. The aqueous layer was made basic by the addition of 50 ml 45 % sodium hydroxide solution, and then extracted with 3 x 50 ml dichloro-methane. The 2-(2,6-difluoro-3- methoxyphenyl)ethyl-amine obtained by the evaporation of solvent was pure enough for use in the next step. IH-NMR: 1.2 2H broad singlet, 2.6 2H (m) , 2.7 2H (m) , 3.65 3H (s), 6.4-6.6 2H (m)

172 mg 2- (2,6-difluoro-3- methoxyphenyl)ethylamine (1.0 mmol) and 210 mg l-(2- aminothiazole)-!'-imidazole thiocarbonyl (1.0 mmol) in 5 ml acetonitrile were refluxed for one hour. The solution was cooled, and crystallization was allowed for overnight. Solid material was filtered off, and recrystallized from acetonitrile to give 138 mg of the titled product.

1H-NMR (DMSO-dg) : 3 .1 2H (t) , 3 .8-4. 0 5H (m) , 6.9-7 .2

•3H (m) , 7.4 IH (d) , 9.8 IH broad peak, 11.7 IH broad peak

Analysis C13H 3F2N3OS2: calculated C 47.40% H 3.98% N 12.76%; found: C47.6% H 4.1% N 12.75%

Example 402

N- 12- 1 -2-Benzotriazolyl)ethvl)-N'- 12- thiazolvl)thiourea 59.5 g benzotriazole (0.50 mol) was dissolved in 700 ml dimethylformamide. 160 g Sodium carbonate (1.5 mol) was added and then dropwise 73.5 g ethyl chloroacetate (0.60 mol). The stirred mixture was slowly heated to 40°C, and kept at that temperature for 17 h. The solvent was evaporated and the residue was extracted with ethyl acetate. GC showed one major and one minor product. The minor ■ product ethyl-2-(2-benzotriazolyl)acetate was isolated by fractional crystallization from cold mixtures of ethanol and ethyl acetate.

7.1 g Of this minor product (40 mmol) was dissolved in 50 ml diethyl ether-tetrahydrofurane 1:1 and 1.5 g of lithium borohydride was added. The reaction mixture was stirred for 17 h at room temperature. The solvent was removed and replaced with 50 ml butanol. 5 ml Water was added and the temperature was slowly raised to about 50°C. After 4 h at this temperature the solvent was removed and the residue was partitioned between dichloromethane and water. The organic layer was dried, and the product

2-(2-benzotriazolyl)ethanol was isolated by crystallization from cold ethanol.

4.70 g Of the 2-(2-benzotriazolyl)ethanol (28.8 mmol) was dissolved in 200 ml diethyl ether and 2.28 g pyridine (28.8 mmol) was added. The mixture was cooled to -50°C, and 8.18 g triflie anhydride (29 mmol) was added. The mixture was removed from the cooling bath, and was allowed to reach room temperature. The mixture was filtered under dry conditions and added to a cold -40°C εolution of ca 150 ml ammonia in 50 ml diethyl ether. Thiε mixture waε allowed to reach room temperature, and ether waε removed. 50 ml 2M HCl was added, and this mixture was washed with methylene chloride. The aqueous phase was made basic by addition of 50 ml 25 % sodium hydroxide and extracted with 3 x 25 ml methylene chloride. Evaporation of the solvent gave 2.10 g 2- (2- benzotriazolyl)ethylamine (12.9 mol). This amine was used in the next εtep without further purification. 324 mg 2-(2-benzotriazolyl)ethylamine (2 mmol) and 420 mg 1-(2-aminothiazole)-1'-imidazole thiocarbonyl (2 mmol) were mixed in 3 ml acetonitrile. The mixture waε εlowly heated to reflux, and waε then cooled to allow the product to cryεtallize. Repeated cryεtallization from acetonitrile gave 234 mg pure N- (2-(-2-benzotriazolyl)ethyl)N'-(2-thiazolyl)thiourea. iH-NMR (DMSO-dg): 4.5 2H ( ) , 5.1 2H (m) , 6.75 IH (d) ,

7.05 IH (d), 7.4 2H (m) , 7.9 2H (m) . ¹³ C-NMR 47, 56, 112, 119, 127, 145, 180. Analyεiε Ci2Hi2 S2: calculated C 47.35% H 3.97% N

27.61%; found: C 47.3% H 3.95% N 27.2%'

Exa ple 403 cis/trans N-(2-(2-ethoxvphenvlcvclopropanvl) )-N'-(2- pvridvl)thiourea 28.56 g methyl triphenylphosphonium bromide

(80 mmol) in 500 ml tetrahydrofurane was cooled to -50°C. 50 ml n-Butyllithium in hexane (about 1.6 M, 80 mmol) was added dropwise under εtirring. The mixture was slowly warmed to room temperature, and kept there for two hours. The mixture was then cooled to -30°, and 12 g 2-ethoxybenzaldehyde (80 mmol) was added. The mixture was warmed to room temperature, and most of the solvent was removed and the reεidue waε mixed with 400 ml ether and filtered. The solvent was evaporated and ethyl acetate was added to reεidue. The solution was passed through a pad of silica gel. This crude 2-ethoxystyrene was dissolved in 50 ml dichloroethane and used as such in the next reaction step:

0.1 g Cul was added, and the mixture was heated to reflux temperature. 8.80 g Ethyl diazoacetate in 30 ml dichloroethane was then added dropwise over a period of 1 hour. GC-analysis showed the formation of two products in a about 1:2 ratio. The two isomeric products were separated from other material by column chromatography (silica-gel, mixtures of hexane - ethyl acetate). This gave 3.1g of a cis/trans mixture of 2- (2-ethoxyphenyl)-1-carboxyethyl cyclopropanes. The product mixture was hydrolysed in a refluxing mixture of 50 ml ethanol + 10 ml water + 4 g sodium hydroxide

(2 hourε) . The εolvent waε evaporated and the reεidue waε made acidic with 100 ml 2M hydrochloric acid and extracted with 2 x 50 ml dichloromethane. The organic layers were dried and solvent was evaporated. 50 ml Toluene was added followed by 6 g thionyl chloride. . The mixture was heated to 80°C for one hour and the solvent was then removed. 100 ml Acetone was added, the solution was cooled in an ice-bath and 4 g sodium azide in 20 ml water and 100 ml toluene was added _# after which the mixture was washed with 3 x 50 ml water. The organic layer was dried ( a2Ξθ4), the εolvent was evaporated and the residue was dissolved in 100 ml dioxane. The dioxane solution was heated slowly to reflux, and kept at reflux 30 min. 25 ml Concentrated hydrochloric acid was added and the mixture was refluxed for 2 hours. The solvent was removed and the residue waε partitioned between 50 ml dichloromethane and 50 ml 2M hydrochloric acid. The aqueouε layer waε made baεic by the addition of 50 ml 25% sodium hydroxide εolution, and extracted with 3 x 50 ml dichloromethane. The dichloromethane εolvent waε evaporated and the reεidue waε purified by column chromatography (εilica-gel, mixtures of ethanol and ethyl acetate to give about 1:1 mixture of cis/tranε 2-(2-ethoxyphenyl) cyclopropyl-amineε.

0.24 g 2-Ammopyridine ( 2.6 mmol) and 0.46 g thiocarbonyldiimidazole (2.6 mmol) were εtirred in 5 ml acetonitrile for 2 hourε. 0.41 g (2.6 mmol) of the mixture of cyclopropylamines was added, and the reaction mixture was heated slowly to 70°C and stirred

at that temperature for ^' 17 hours. The solvent was evaporated, and the titled product was isolated by column chromatography (silica-gel, mixtures of hexane- ethyl acetate. iH-NMR: 1.15-1.25 5H (m) , 2.50 IH (m) , 3.42 0.55H (m) , 3.73 0.45% (m), 4.0-4.12H (q) , 6.7-8.15 8H (m)

Example 404

N- 12-(2-Pvridvlethvl) )-N'- 12- 15- chlprppyridyl))thiourea

1.73 g 2-Amino-5-chloropyridine (10 mmol) and 1.78 g thiocarbonyl diimidazole (10 mmol) were stirred for 2 hourε in 15 ml acetonitrile. 1.47 g 2- (2-Aminoethyl)pyridine (12 mmol) was added, and the mixture,was stirred at room temperature for 2 hourε. The reaction mixture was then heated to 50°C and was stirred for 17 hours. Crystals were collected by filtration after cooling of the mixture. Recrystallization from acetonitrile gave pure titled product. iH-NMR (DMSO-dg): 3.2 2H (t) , 4.1 2H (m) , 7.2-7.5 3H

(m), 7.8-8.02H (m) , 8.2 IH (d) , 8.7 IH (m) , 18.0 IH (s), 11.5 IH (s)

Example 405

N- 12-(2-Pvridvlethvl) )-N ¹ - 12-(5-bromoPvridvl) )thiourea 1.28 g 2-Amino-5-bromopyridine (10 mmol) and 1.78 g thiocarbonyl diimidazole (10 mmol) were stirred for 2 hours in 15 ml acetonitrile. 1.47g 2-(2- Aminoethyl)pyridine (12 mmol) was added, and the mixture was stirred at room temperature for 2 hours.

The reaction mixture was then heated to 50°C and was stirred for 17 hours. Crystals were collected by filtration after cooling of the mixture. Recrystallization from acetonitrile gave pure titled product.

IH-NMR .(DMSO-dg): 3.5 2H (t) , 4.2 2H (m) , 7.2 2H (d) ,

7.9-8.1 3H (m) , 8.3 IH (d) , 8.6 IH (m) , 8.9 IH (d) 10.9 IH (ε), 11.4 IH (t)

Example 4Q6

N-(2-(2-pyridylethyl) )-N'- (2-(5-nitropyridyl) )thiourea 1.39 g 2-Amino-5-nitropyridine (10 mmol) waε diεεolved in 20 ml tetrahydrofurane. 0.68g (10 mmol) Sodium ethoxide (10 mmol) waε added. The mixture waε heated to 50°C and εtirred for 30 minuteε. The mixture waε cooled, and most of the liquid was decanted from the formed red precipitate. The precipitate was taken up in 20 ml acetonitrile, and added to 1.78 g thiocarbonyl diimidazole in 10 ml acetonitrile. This mixture was εtirred for 10 minuteε at room* temperature. 1.22 g 2-(2-Amino-ethyl)pyridine waε added and the mixture was stirred for one hour. 1 ml Acetic acid was added, and the solvent was evaporated. The residue was washed with water. Repeated crystallizationε from acetonitrile gave 1.28 g yellow crystals of the titled product. iH-NMR (DMSO-dg): 3.1 2H (t) , 3.2 2H (t), 7.2 IH (m) ,

7.3 3H (m), 7.7 IH (m) , 8.4 IH (m) , 8.5 IH (m) , 8.9 IH (d)

Example 407 N- 12-(2-pvridvlethvl) )-N' - 12- 15- methylpyridyl)) hiourea

1.78 g thiocarbonyl diimidazole (10 mmol) and 1.58 g 2-amino-5-methylpyridine (10 mmol) in 15 ml acetonitrile were stirred for 1 h at room temperature. 1.22 g 2-(2-Aminoethyl)-pyridine was added. The mixture was stirred 1 h at room temperature, and then 17 h at 50°C. The mixture was cooled and crystals were collected by filtration. Recrystallization from acetonitrile gave 1.30 g pure titled product.

iH-NMR (DMSO-dg): 2.23H (s) , 3.12H (t) , 4.0 2H (m), 7.0 IH (d), 7.2 IH ( ) , 7.3 IH (d) , 7.6 IH (m) , 7.7 IH (m) , 7.8 IH (m) , 8.6 IH (m)

1 ³ C-NMR: 17.3, 36.3, 44.0, 112.1, 121.7, 123.5, 126.7, 136.6, 139.7, 144.6, 149.2, 151.8, 159.0, 179.2

Example 408 (N-(2-(2-pyridylethyl) )-W-(2-(5- bromopyridyl))thiourea HCl gait)

100 mg N-(2-(2-pyridylethyl) )-N'-(2-(5- bromopyridyl))thiourea (Example 405) was added to about 10 ml water. The suspension was heated to about 90°C and pH was adjusted to about 3 by addition of hydrochloric acid. The titled product was isolated by freeze-drying. iH-NMR (DMSO-dg): 3.6 2H (t) , 4.2 2H (m) , 7.2 2H (d) ,

7.9-8.13H (m), 8.3 IH (d) , 8.6 IH (m) , 8.9 IH (d) 10.9 IH (s), 11.4 IH (t)

Example 409 (N-(2- (2-pyridylethyl) )-N'- (2- (5- chloropyridyl) )thiourea HCl salt) 100 mg N-(2-(2-pyridylethyl) )-N'-(2-(5- chloropyridyl) )thiourea (Example 404) waε added to about 10 ml water. The εuspension was heated to about 90°C and pH was adjuεted to about 3 by addition of hydrochloric acid. The titled product waε iεolated by freeze-drying. IH-NMR (DMSO-dg): 3.6 2H (t), 4.2 2H (m) , 7.3 IH (d) ,

8.0-8.2 3H (m) , 8.3 IH (m) , 8.6 IH (m) , 9.0 IH (m) , 10.9 IH (8), 11.4 IH (t) .

Example 410 N-(2-(-2-Benzotriazolvl)ethvl)N'- (2-(5- bromopvridvl) )thiourea 356 mg Thiocarbonyl diimidazole (2 mmol) and 346 mg 2-amino-5-bromopyridine (2 mmol) in 2 ml acetonitrile were εtirred for 1 h at room temperature. 324 mg 2-(2-Benzotriazolyl)ethylamine (Example 402) (2 mmol) waε then added. This mixture was stirred for 10 min, and was then heated to reflux. After 20 min 5 ml more acetonitrile and 3 ml dimethylformamide were added to give a clear solution. The solution was cooled and the resulting precipitate was collected after centrifugation. Recryεtallization from acetonitrile-dimethylformamide gave 310 mg of the pure titled product. iH-NMR (DMSO-dg): 4.44 2H (m) , 5.15 2H (m) , 7.18 IH (d), 7.56 2H (m) , 7.90 IH (d) , 8.04 3H (m) , 10.93 IH (s) , 11.41 IH (ε)

ⁱ³ C-NMR: 44, 55, 114, 118, 118, 127, 142, 144, 146, 152, 180 PPM

Example 411 N- 12- 12.6-difluoro-3-methoxyphenyl)ethyl)-N'- 12- 15- bromopvridvl) )thiourea 334 mg 2-(-2,δ-difluoro-S- methoxyphenyl)ethylamine (Example 401) (mw 167, 2 mmol) and 566 mg l-(2-(5- bromopyridyl)thiocarbamoyl)imidazole (Example 392) (mw 283.15) (2 mmol) were mixed in 3 ml acetonitrile. The mixture was slowly heated to reflux, and was then cooled to crystallize. Repeated crystallization from acetonitrile gave 238 mg of the pure titled product. 1H-HNMR: (DMSO) 3.122H (t) , 3.86 3H (s) , 4.00 2H (m) , 6.82 3H (m), 7.68-7.72 IH (m) , 8.12 IH (d) , 9.16 IH (s) , 11.35 IH (s)

Example 412 N- 12- 1 . .5-trimethoxv)-benzvl)-N - 2- thiazolyl)thiourea The starting material 3,4,5- trimetho-^benzylamine was prepared by reduction of 3,4,5-trimethoxybenzonitrile with cobalt chloride and sodium borohydride, according to the general method described by L.S.Heinzman in J ^" . Am. Chem. Soc , 104, p. 6801 (1980).

3,4,5-trimethylbenzonitrile (965 mg, 5 mmole) and cobolt chloride (2.37 g, 10 mmole) were dissolved in methanol (70 ml) . To the solution was

added sodium borohydride (1.89 g, 50 mmole). After 3 hrs, the reaction mixture was filtered through Celite, and concentrated to small volume. It was then taken up in chloroform and extracted with IN HCl (100 ml) . The organic phase was discarded. The aqueous phase was basified with aqueous ammonia, and extracted with chloroform. The organic phase was dried over magnesium sulfate, and evaporated in vacuo to yield 3,4,5- trimethoxybenzylamine (427 mg) . IH-NMR(CDCl ₃ )d: 6.58 (s, 2H, TMPh), 3.85 ( , 6H, 2 x MeO), 3.82 (s, 3H, MeO), 3.80 (m, 2H, CH ₂ ) .

The titled compound was prepared analogous to Example 105. IH-NMR (CDCl ₃ )d: 7.26 (d, IH, thiazole), 6.85 (d, IH, thiazole), 6.64 (s, 2H, TMPh), 4.84 (d, J= 5.7Hz, 2H, CH2), 3.86 (m,6H, MeO), 3.85 (s, 3H, MeO)'. l ³ C-NMR(CDCl ₃ )d: 177 (C=S) , 161 (thiazole), 153

(TMPh) , 138 (TMPh) , 137 (thiazole) , 132 (TMPh) , 111 (thiazole), 104 (TMPh), 61 (MeO), 56 (MeO), 50 (CH2) .

Example 413 2-Formvl-3-fluoropyridine Dry ethyl ether (500 mL) , n-BuLi (1.6 M in hexane, 62.5 mL, 0.1 mol), and dry 1,4- diazabicyclo[2.2.2]octane (DABCO) (11.56 g, 0.1 mol) were introduced into a 1 L flask under a dry N2 stream at -60°C and the resulting cloudy solution was stirred for 1 hour at -20°C. ^' The mixture was then cooled to -75°C and an ethyl ether (50 mL) solution of 3-fluoropyridine (9.81 g, 0.1 mol) was added dropwise and stirring continued for 1 1/2

hours at -60°C. The mixture was recooled to -75°C, dry 27,iY-dimethylfoπnamide (8.52 L, 0.11 mol) dissolved in ethyl ether (50 mL) was added dropwise and the mixture stirred for 2 hours at -75°C. Water (175 mL) was introduced slowly at -10°C, the aqueous layer extracted

^■ with ethyl acetate (5 x 200 mL) , and the combined extracts were dried over anhydrous εodiu sulfate. Solvent removal produced a dark brown oil which after vacuum distillation and purification by chromatography on εilica gel provided 4.4 g (35%) of the titled product aε an off-white crystalline solid: mp 48-49°C; IR (CHCI3, cm" ¹ ) 3071, 3020, 2873, 2842, 1720, 1588, 1461,

1441; NMR (300 MHz, CDCI3) δ 10.21 (s, IH) , 8.62 (m, IH) ,

7.57 (m, 2H) ;

MS (FD) m/e 125 (M ⁺ ) ;

UV (EtOH) 263nm (6=1551), 201nm (6=2188)

Example 414

2-Hvdroxvmethvl-3-fluoropyridine A εolution of 2-formyl-3-fluoropyridine (4.0 g, 32 mmol) and sodium borohydride (309 mg, 8 mmol) in absolute ethanol (40 mL) was stirred at 0°C for 15 minutes and at room temperature for 1 hour. The reaction was quenched with saturated aqueous ammonium chloride (5 mL) and filtered through diatomaceous earth to remove solids. The filtrate was evaporated and the resultant white solid was dissolved in ethyl acetate and water. The aqueous layer was extracted with ethyl acetate (5 x 30 mL) and the combined extracts were dried over anhydrous sodium sulfate.

Solvent removal provided 3.78 g (93%) of the titled product as a pale yellow oil:

IR (CHCI3, cm-1) 3607, 3439, 3019, 1607, 1576, 1451, 1416,

1312, 1257, 1218, 1209, 1167, 1105, 1053, 857, 803; iH NMR (300 MHz, CDCI3) δ 8.38 (m, IH) , 7.39 (m, IH) , 7.26

( , IH) , 4.83 (ε, 2H) , 3.73 (br s, IH) ; MS (FD) m/e 127 (M ⁺ ) ; UV (EtOH) 263nm (ε=2796) , 201nm (6=3651)

Anal. Calcd for CgHgFNO: C, 56.69; H, 4.76; N, 11.02. Found: C, 56.45; H, 4.97; N, 10.89

Example 415 2-chloromethvl-3-fluoropyridine hydrochloride To a solution of 2-hydroxymethyl-3- fluoropyridine(3.43 g, 27 mmol) in dichloromethane (30 mL) cooled to -10°C was added neat thionyl chloride (4.4 mL, 60 mmol) dropwise over 5 minutes. The resultant pale green solution was εtirred at -10°C for 3 hours followed by evaporation to dryness to provide 4.66 g (95%) of the titled product as an off-white crystalline solid:

IR (CHCI3, cm-1) 2984, 1732, 1551, 1470, 1452, 1333, 1286,

1273, 1237, 1219, 1208, 1193, 1094, 905, 863, 806; NMR (300 MHz, CDCI3) δ 8.69 (m, IH) , 8.06 (m, IH) , 7.89

(m, IH) , 5.09 (s, 2H) ; MS (FD).m/e 145 (M+ free base), 147 (M+2 free base)

Example 416 2-cvanomethvl-3-fluoropyridine A solution of 2-chloromethyl-3-fluoropyridine hydrochloride (4.85 g, 26.7 mmol) and potassium cyanide (3.47 g, 53.4 mmol) in methanol (50 mL) and water (20 mL)

was stirred at approximately 55°C for 17 hours. The resultant black solution was concentrated to an oil under reduced pressure, redissolved in ethyl acetate and water, and adjusted to pH 11.5 with solid sodium carbonate. The aqueous layer was salted with sodium chloride, extracted with ethyl acetate (7 x 40 mL) , and the combined extracts were dried over axihydrouε εodium εulfate. Solvent removal provided 3.6 g (99%) of (4) as a black solid: IR (CHCI3, cm-1) 3019, 3011, 2977, 1708, 1603, 1578, 1454, 1412, 1259, 1222, 1219, 1215, 1161, 1097, 1047, 804; ^X H NMR (300 MHz, CDCI3) δ 8.43 (m, IH) , 7.42 (m, IH) , 7.33 (m,

IH), 3.97 (S, IH), 3.96 (s, IH) ; MS (FD) m/e 136 (M ⁺ ) ; UV (EtOH) 263nm (6=3719), 203nm (ε=3707)

Example 417 -aminoethy - -fluoropyridine To a solution of 2-cyanomethyl-3-fluoropyridinein absolute ethanol (75 mL) and 5M hydrochloric acid (0.3 mL) was added platinum oxide catalyst (0.64 g) and the mixture was hydrogenated at 60 psig for 1 hour in a Paar hydrogenation apparatus. Filtered off the catalyst, concentrated the filtrate under reduced pressure to a brown oil, dissolved the oil in water (40 mL) and ethyl acetate (10 mL) and adjusted to pH 0.9 with concentrated hydrochloric acid. Separated the layers, extracted the ethyl acetate layer with lϋ HCl (1 x 10 mL) , combined the acidic aqueous extracts and washed them with ethyl acetate (4 x 30 mL) . Adjusted the aqueous layer to pH 10.8, extracted with dichloromethane (6 x 30 mL) , and the combined extracts were dried over anhydrous sodium sulfate.

Solvent removal provided 1.58g (70%) of the titled product as a brown oil:

IR (CHCI3, cm-1) 2969, 2873, 1632, 1602, 1575, 1550, 1450,

1414, 1359, 1246, 1219, 1212, 1203, ^' 1169, 1093; .5. iH NMR (300 MHz, CDCI3) δ 8.31 (m, IH) , 7.29 (m, IH) , 7.13

(m, IH) , 3.03 (m, 4H) , 1.80 (br s, 2H) ; MS(FD) m/e 140(M+) ; Tit-ration (66% DMF/H2O) pKa 9.56

10 Example 418

1-r (2-r5-chlorolpvridvl)thiocarbamoyl! imidazole A solution of 1,1'-thiocarbonyldiimidazole

(4.95g, 25 mmol) and 2-amino-5-chloropyridine (3.28g, 25 mmol) in acetonitrile (75 mL) was stirred at room 15 temperature for 23 hours. The resulting precipitate was collected by filtration to provide 3.42 g (57%) of the titled product:

IR (KBr, cm-1) 3218, 3090, 1599, 1572, 1551, 1529, 1471,

1455, 1390, 1375, 1340, 1310, 1228, 1183, 1109, 1053, 939, 20. 831; iH NMR (300 MHz, DMSO-dg) δ 8.58 (m, IH) , 8.25 (m, IH) ,

8.05 (br ε, IH), 8.03 (m, IH) , 7.65 (m, IH) , 7.15 (d, J=8 Hz, IH) , 6.80 (s, IH) ;

MS (FAB) m/e 239 (M+l) ; 5 UV (EtOH) 305nm (ε=15141), 273nm (6=14730), 226 nm (6=11407), 203 nm (ε=16456) .

Example 419 1- r (2-r5-bromo!pvridvl)thiocarbamoyl1 imidazole 0 A solution of 1,1'-thiocarbonyldiimidazole

(4.95g, 25 mmol) and 2-amino-5-bromopyridine (4.46g, 25

mol) in acetonitrile (75 mL) was stirred at room temperature for 23 hours. The resulting precipitate was collected by filtration to provide 5.42 g (76%) of the titled product: IR (KBr, cm-1) 3218, 3088, 1594, 1565, 1550, 1465, 1387,

1370, 1340, 1309, 1251, 1196, 1182, 1096, 1053, 938, 828; iH NMR (300 MHz, DMSO-dg) δ 8.57 (m, IH) , 8.30 (m, IH) ,

8.15 ( , IH), 8.03 (br ε, IH) , 7.75 (m, IH) , 7.15 (d, J=8 Hz, IH) , 6.80 (s, IH); MS (FAB) m/e 284 (M+l); UV (EtOH) 304nm (ε=13932) , 274nm (ε=13051) , 230 nm (ε=11098), 204 nm (6=17821) .

Example 420

N-.2-(2-r3-fluorolpvridvl)ethvπ-N'-r2-(5- br .røς> ) pyridyll thiourea

A solution of l-[(2-[5- bromo]pyridyl)thiocarbamoyl] imidazole (7) (1.42 g, 5 mmol) and 2-aminoethyl-3-fluoropyridine (5) (0.7g, 5 mmol) in 27,-N-dimethylformamide (20 mL) was stirred at 95°C for 3 hours. The reaction was cooled to room temperature, poured into ethyl acetate, and washed with water, saturated aqueous sodium bicarbonate, and brine. The organic layer was dried over anhydrous sodium sulfate, concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.33 g (19%) of the titled product as a white solid: mp 184-187 °C;

IR (KBr, cm-1) 3i6i, 3023, 1597, 1579, 1555, 1524, 1488, 1473, 1447, 1364, 1342, 1315, 1236, 1221, 1172, 1142, 1087, 833;

1H NMR (300 MHz, DMSO-d6) δ 11.38 (m, IH) , 10.64 (s, IH) ,

8.41 (m, IH) , 8.14 (d, J=2 Hz, IH) , 7.91 (m, IH) , 7.63 ( , IH) , 7.33 (m, IH) , 7.06 (d, J=9 Hz, IH) , 4.01 (m, 2H) , 3.10 (t, J=6 Hz, 2H) ; MS (FD) m/e 355 (M+) , 357 (M+2);

UV (EtOH) 305nm (ε=13169), 273nm (ε=25811) , 201 nm (6=17493).

Example 421 _N -r2-(2-r3-fluorolPyridyl)ethyll-N'-r2-(5- chloro)pvridvl1 hiourea A solution of l-[(2-[5- chloro]pyridyl)thiocarbamoyl] imidazole (2.39 g, 10 mmol) and 2-aminoethyl-3-fluoropyridine(1.4g, 10 mmol) in N,N- dimethylformamide (25 mL) was stirred at 95 °C for 3 hours. The reaction was cooled to room temperature, poured into ethyl acetate, and washed with water, saturated aqueous sodium bicarbonate, and brine. The organic layer was dried over anhydrous sodium sulfate, concentrated and the resultant solid was purified by chromatography on silica gel to provide 0.96 g (31%) of the titled product as an off-white solid: mp 170-173 °C; IR (KBr, cm-1) 3167, 3022, 1603, 1583, 1554, 1524, 1492, 1474, 1449, 1367, 1342, 1317, 1238, 1222, 1173, 1142, 1087, 835, 803; iH NMR (300 MHz, DMSO-dg) δ 11.39 (m, IH) , 10.65 (s, IH) ,

8.42 (m, IH) , 8.07 (d, J=2 Hz, IH) , 7.81 (m, IH) , 7.63 (m, IH) , 7.33 (m, IH) , 7.11 (d, J=9 Hz, IH) , 4.01 (m, 2H) , 3.10 (t, J=6 Hz, 2H) ;

MS (FD) m/e 310 (M ⁺ ) , 312 (M+2 ) ;

UV (EtOH) 305nm (6=11338), 272nm (ε=23394) .

Example 422 (+) and (-) N-(cis-2- henvlcvclopropvl)-S-α-methoxv phenylacetamide S-α-methoxyphenylacetic acid (2.0 g, 12 mmol) was dissolved in dichloro-methane (100 ml) and oxalylchloride (1.36 ml, 16 mmol) was added together with 2 drops of N,N- dimethylformamide. The solution was stirred under an atmosphere of nitrogen gas at ambient temperature for 120 minutes. The solvent and excess reagent were removed on a rotavapor. The oily residue was dissolved in 100 ml dichloromethane and D,L-cis-phenylcyclopropylamine (Example 202) (2.0 g, 15 mmol) in pyridine (5.0 ml) was added. The solution was stirred for 15 minutes and diethyl ether (200 ml) was added. The precipitate was filtered off and the solution was evaporated. The residual crystalline diaεtereoisomerical mixture was purified by flash- chromathography by elution with ethyl acetate-toluene- dichloroethane (1:2:2) . The fractions containing the faster eluting product were evaporated to yield product A. The slower eluting fractions were evaporated to yield product B.

A] IH-NMR (35 mg in 0.6 ml CDC1 ₃ , 294 K) 0.99-1.06 (IH, m), 1.29-1.38 (IH, m) , 2.29-2.38 (IH, q) , 3.00 (3H, s), 3.07-3.17 (m), 4.41 (IH, s) , 6.3 (IH) , 7.16-7.32 (10H, m) .

1 ³ C-NMR: 11.18, 21.83, 27.82, 57.11, 83.68, 126.34, 126.43, 128.08, 128.18, 128.26, 128.78, 136.15, 136.85, 171.75, 171.75. calc for CisHigN: C 76.84 %, H 6.80 %, N 4.99% Mp. 136.7-137.1°C

B] IH-NMR (same conditions as for A): 1.09-1.16 (IH, q) , 1.32-1.41 (IH, q), 2.24-2.38 (IH, q) , 3.10-3.20 (4H, m) , 4.45, (IH, s), 6.4 (IH), 6.95-6.99 (2H, m) , 7.15-7.27 (7H, m) .

1 ³ C-NMR: 10.69, 21.82, 27.85, 56.87, 83.63, 126.35, 126.87, 128.00, 128.13, 128.19, 128.83, 135.88, 136.54, 171.55. Calc for CisHigN: C 76.84 %, H 6.80 %, N 4.99 %

Mp. 143 ^' .6-144.7°C.

Example 423 (-) ciR-2-phenvlcvclopropvlamine Compound A (1.2 g) was refluxed in a mixture of water-dioxane-hydrochloric acid conc.aq. (1:1:1) for 4 hours. The solution was diluted with water, washed with dichloromethane, basified with ammonium hydroxide (cone, aq. ) , extracted with dichloromethane, dried with sodium sulfate, filtered and evaporated to yield the titled product as an oil. IH-NMR CDCI3 δppm 0.8-0.9 (IH, CH2, m) , 1.1-1.2 (IH, CH2, m) , 2.-2.1 (IH, PhCH, q) , 2.6-2.7 (IH, C£ H2, ) , 7.1-7.4 (5H, Ph) .

^" Example 424

(+) cis-2-phenvlcvcloproPvlamine Compound B (1.2 g) was refluxed in a mixture of water-dioxane-hydrochloric acid cone. aq. (1:1:1) for 4 hours. The solution was diluted with water, washed with dichloromethane, basified with ammonium hydroxide (cone, aq.) , extracted with dichloromethane, dried with sodiumsulfate, filtered and evaporated to yield the titled product as an oil. IH-NMR CDC1 ₃ δppm 0.8-0.9 (IH, CH2, m) , 1.1-1.2 (IH, CH , m), 2.0-2.1 (IH, PhCH, q) , 2.6-2.7 (IH, CHNH ₂ , m) , 7.1-7.4

(5H, Ph) .

D [a] = + 62.7° (C 1, CHCI3) 20

Example 425 (-)-N-(cis-2-phenvlcvclopropvl)-N -(5-chloropvrid-2-vl)- thiourea (+)-N-cis-2-phenylcyclopropylamine (0.23 g, 1.7 mmol) from Example 424 was condensed with l-(5-chloropyrid- 2-yl-thiocarbamoyl)-imidazole (0.4 g, 1.7 mmol) according to the procedure of Example 372 to yield the titled product as crystals. IH-NMR CDCI3 δ ppm 1.2-1.3 (IH, m, Cfi ₂ ), 1.5-1.6 (IH, m,

Cfi ₂ ), 2.5-2.6 (IH, q, PhCfi), 3.7-3.8 (CfiN), 6.6-6.7 (IH, d, pyr), 7.2-7.5 (7H, Ph, pyr), 8.9-9.0 (IH, Nfi) , 10.8-10.9 (IH, Nfi).

Mp . 189 . 6-191.3°C .

D [a] = - 62.7° (C 1, CHC1 ₃ )

20

Example 426 (+)-N-(cis-2-phenylcvclopropyl)-N'-(5-chloroPyrid-2-yl)- thiourea (-)-N-cis-2-phenylcyclopropylamine (0.23 g, 1.7 mmol) from Example 423 was condensed with 1-(5-chloropyrid- 2-yl-thiocarbamoyl)-imidazole (0.4 g, 1.7 mmol) according to the procedure of Example 372 to yield the titled product as crystals.

IH-NMR CDCI3 δppm 1.2-1.3 (IH, m, Cfi2), 1.5-1.6 (IH, m, Cfi ), 2.5-2.6 (IH, q, PhCfi), 3.7-3.8 (CfiN), 6.6-6.7 (IH, d, pyr), 7.2-7.5 (7H, Ph, pyr), 8.9-9.0 (IH, Nfi), 10.8-10.9 (IH, Nfi) .

Mp. 189.2-191.8°C. D [a] = + 59.3° (C 1, CHCI3)

20

Example 427 (-)-N- (cig.-2-phenvlcvclopropvl)-N'-(5-bromopvrid-2-vl)- thiourea

(+)-N-cis-2-phenylcyclopropylamine from Example 424 and 2-amino-5-bromopyridine were reacted according to the procedures of Examples 93 and 94 using 2-amino-5- bromopyridine instead of 2-aminothiazole, to give the titled product as crystals.

iH-NMR (CDCI3): 1.19 - 1.26 (m, IH) , 1.47 - 1.55 (m, IH) , 2.52 (q, IH), 3.66 - 3.75 (m, IH) , 6.66 (dd, IH) , 7.27 - 7.41 (m, 5H), 7.47 (d, IH) , 7.60 (dd, IH) , 8.98 (broad s. IH), 10.88 (broad s., IH) . Mp = 192.0 - 193.0°C

D [a] = - 52.8° (C 1, CHCI3)

20

Example 428

(+)-N-(cig-2-phepylcyclopropyl)-N'-(5-promopyrid-2-yl) thiourea (-)-N-cis-2-phenylcyclopropylamine from Example 423 and 2-amino-5-bromopyridine were reacted according to the procedures of Examples 93 and 94 using 2-amino-5- bromopyridine instead of 2-aminothiazole, to give the titled product as crystals. iH-NMR (CDCI3): 1.19 - 1.26 (m, IH), 1.47 - 1.55 (m, IH) , 2.52 (q, IH), 3.66 - 3.75 (m, IH) , 6.66 (dd, IH) , 7.27 - 7.41 ( , 5H), 7.47 (d, IH), 7.60 (dd, IH) , 8.98 (broad s., IH) , 10.88 (broad s., IH) . Mp = 195.5 - 196.5°C D [a] = + 50° (C 1, CHCI3)

20