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JPH02223539A |
PURPOSE: To selectively obtain a desired optical isomer of the title compound by reacting a novel specific 10-methyl-2,4-dioxo-1,5-dioxaspiro[5,5]undecane derivative with diazomethane and then hydrolyzing. CONSTITUTION: A novel substance...
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JPH02218642A |
NEW MATERIAL: A compd. represented by formula I (a group represented by formula II is divalent cyclic groups represented by formulae III-VII, R1 is 6- carboxyhexa-2-enyl or a modified group modified by the reduction of a double bond volu...
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JPH02218683A |
NEW MATERIAL: Compounds of formula I [Me is Al, CR4 (R4 is H, 1-6C alkyl, halogen, phenyl, O-C1-6 alkyl)I, SiR4, Sn(IV)R4, P, P=O; X is O, S, NR5 (R5 is H, 1-6C alkyl, phenyl); R1 is H, 1-6C alkyl, tri-C1-4 alkylsilyl, (substituted) phen...
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JPH0235739B2 |
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JPH0229663B2 |
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JPH0227975B2 |
A compound of the formula (I) wherein Q is CO, CH(OR), CR(OH), or CR (OC)-lower alkyl); R is H, or C1-2-alkyl; X is hydroxyalkyl, methoxy-C2-11-alkyl, ethoxy-C2-11-alkyl or oxo-C2-11-alkyl, formyl-C2-11-alkyl, carboxy-C2-11-alkyl or (C1-...
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JPH02149540A |
NEW MATERIAL:A 4,5-Dihydro-4,5-dihydroxyphthalic acid and salt thereof. USE: Useful as a raw material monomer or synthetic intermediate for heat resistant polymer or electrically conductive polymer. Especially, cis-4,5-dihydro-4,5- dihyd...
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JPH0225901B2 |
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JPH0224264B2 |
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JPH02129166A |
NEW MATERIAL: A compd. represented by the formula (wherein R1 and R2 are each H or an 8 or less C hydrocarbon group, R2 is a 9 or less C acryl; X1 and X2 are each F, Cl, Br, I, CF3 or CN, etc.; R3 is H, an 8 or less C saturated linear al...
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JPH02124859A |
NEW MATERIAL: A compound of formula I [wherein the symbol CYCLE together with the C atoms bonded to the semicircle is a four- or seven-membered carbocyclic or heterocyclic ring having an ethylenic or aromatic unsaturation between the two...
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JPH0220620B2 |
NEW MATERIAL:A carbaprostacyclin of formulaI(R<1> is H, hydroxyl-protecting group; R<2> is alkyl, alkenyl, alkinyl, hydroxy-substituted alkyl, alkoxy-substituted alkyl, alkinyl-substituted cycloalkyl; R3 is H, alkyl; A is ethylene, trans...
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JPH0220551B2 |
A splicer includes a splicing head into which the two yarn ends are introduced through an inserting slot into a turbulence chamber. The turbulence chamber is formed from two juxtaposed frustum-shaped chambers interconnected by a connecti...
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JPH0273012A |
PURPOSE: To obtain the subject pharmaceutical composition, containing a specific pentacyclic triterpenoid as an active ingredient and hardly exhibiting aldosterone-like side effects. CONSTITUTION: A pharmaceutical composition containing ...
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JPH024217B2 |
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JPH02224A |
NEW MATERIAL: A compd. represented by formula I [wherein A is OR4 (wherein R4 is H, 1-18C alkyl or 2-12C alkenyl), NR5R6 (wherein R5 and R6 are H, 1-18C alkyl, 2-12C alkenyl, alkynyl or 1-10C alkoxy) or OM (wherein M is a cation such as ...
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JPH01301642A |
PURPOSE: To easily obtain the subject compound useful as a medicine, without using complicate processes such as methyl-esterification and saponification, in high yield, by using 3-oxo-18β-glycyrrhetinic acid as a raw material and reduci...
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JPH0155308B2 |
Compounds of the invention are obtained by oxyalkylating natural rosin acids, disproportionated rosin acids or rosin acids modified with aromatic hydroxy compounds or with cycloalkyl and especially aralkyl and aryl compounds capable of s...
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JPH0149264B2 |
A novel prostaglandin analogue of the formula:(wherein the symbol ◄ represents β-configuration, the dotted linie ----- represents a-configuration, and the double bond between (C13-C14 represents transconfiguration) and cyclodextrin cl...
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JPH0148271B2 |
Novel trihalomethylhydroxylactones of the general formula < IMAGE > in which X1, X2 and X3 in each case denote a fluorine, chlorine or bromine atom and the tautomeric cis-keto acids are valuable intermediates for the preparation of cis-2...
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JPH0148254B2 |
11-Deoxoglycyrrhetinic acid hydrogen maleate of the following formula and its salts, and this compound is prepared by reacting 11-deoxoglycyrrhetinic acid with maleic anhydride, and if desired, converting the resulting 11-deoxoglycyrrhet...
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JPH01252298A |
NEW MATERIAL:A compound expressed by formula I [R1 is H or acyl; R2 is H or expressed by formula II (R4WR7 is R1); R3 is (protected) carboxy]. EXAMPLE: A compound expressed by formula III. USE: Antibacterial agent. Preventive and remedy ...
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JPH01233258A |
NEW MATERIAL:A compound expressed by formula I [R1 is H, lower alkyl or lower alkoxy; R2 and R3 are H, halogen, lower alkyl, etc.; A is -(CH2)m- (m is 0W5)]. EXAMPLE: cis(+)-2-Methyl-1,2,3,4-tetrahydro-1-naphthoic acid. USE: An intermedi...
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JPH0136455B2 |
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JPH0136453B2 |
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JPH0136454B2 |
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JPH0134980B2 |
Phenylacetic acid derivatives of the formula wherein n is an integer of 2 to 5; R1 is hydrogen, halogen, trifluoromethyl, nitro or amino; R2 and R3 each independently is hydrogen or lower alkyl; or together form an ethylene group; X1 rep...
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JPH0132811B2 |
Novel substituted arylene compounds and processes for their production are disclosed. These new compounds are useful as anti-arteriosclerotic agents. The novel compounds have the following formulae:-The radicals X,Y, Land M are each oxyg...
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JPH0130819B2 |
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JPH01113351A |
PURPOSE: To provide a pharmaceutical compsn. containing 7-diphenylmethylene bicycloheptane or -heptene which shows an excellent effect for serum lipoproteins and is useful as a hypolipidemic. CONSTITUTION: A bicycloheptane or bicyclohept...
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JPS6475443A |
PURPOSE: To readily and safely obtain the titled compound which is a raw material for medicines or agricultural chemicals in good yield by reaction in one stage, by reacting an acetylenic compound with water and carbon monoxide in the pr...
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JPH0114896B2 |
The present invention discloses a process for preparing high purity 2- methoxy-3,6-dichlorobenzoic acid from a mixture of said acid with its 3,5-dichloro isomer which comprises re-acting said mixture with an alkanol in a liquid inert org...
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JPS6463547A |
PURPOSE: To obtain the titled compound useful as a monomer for polyester or synthetic intermediate for 2-hydroxyfluorenones, by reacting a cyclohexanone-2-carboxylic acid derivative with phenols. CONSTITUTION: The objective compound of f...
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JPS6447730A |
NEW MATERIAL: The compd. of formula I [R1 is 2 to 4C alkyl; R2 is H or 1 to 4C alkyl; R3 is H or 1 to 3C alkyl; R4, R10 are H or n-propyl; (x) is 2 to 5; R6 is H or C-C bonded together with R7; R6 is H-Z-COORR9 (Z does not exist or is al...
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JPS646181B2 |
This disclosure describes novel 2,5-dihydro-2,5-dialkoxyfuran derivatives useful as intermediates for the preparation of the natural prostaglandins and their congeners.
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JPS6429340A |
NEW MATERIAL: Triterpene compd. expressed by the formula. USE: This compd. has an inhibiting effect for biosynthesis of cholesterol and is useful as a pharmaceutic. PROCESS: Scisandracease kadsura peteroclita is used as the source materi...
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JPS63303946A |
Bicyclic decanedioic acids corresponding to the following general formula (I) in which R represents a C1-C22 alkyl radical, a C2-C34 alkylcarbonyl radical, or a residue of a polyalkoxylated C2-C22 fatty alcohol, represent a new class of ...
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JPS6362505B2 |
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JPS6361935B2 |
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JPS6361936B2 |
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JPS63216841A |
NEW MATERIAL:A bicyclo[4,3,3]nona-2-ene shown by formula I [R is CH2OR2 (R2 is H or OH-protecting group) or COOR3 (R3 is H or carboxyl-protecting group); R1 is carboxyl protecting group and A-B is shown by formula II or III]. EXAMPLE: 1,...
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JPS63216842A |
NEW MATERIAL:A 6,7-dimethyl-2,3-dicarboxy-5-hydroxy-7-(2-substituted-1-meth
yl- ethyl)bicyclo[4,3,0]nona-2,4-diene shown by formula I [R is CH2OR2 (R2 is H or OH-protecting group) or COOR3 (R3 is H or carboxyl-protecting group); R1 is H ...
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JPS6343379B2 |
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JPS6338973B2 |
Cyclopropane compounds of the formula wherein R represents an acetyl or acetoxy group; a C2-10 alkoxy group optionally-substituted by one or more halogen atoms; a (cycloalkyl)alkoxy group containing 3 to 7 ring carbon atoms, a total of 4...
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JPS6338388B2 |
Compounds of the invention are obtained by oxyalkylating natural rosin acids, disproportionated rosin acids or rosin acids modified with aromatic hydroxy compounds or with cycloalkyl and especially aralkyl and aryl compounds capable of s...
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JPS63501720A |
A ring contraction approach is applied to preparation of cyclopentane derivatives, especially 2,2,5,5-tetra-methylcyclopentanecarboxylic acid from cyclohexane compounds. In one aspect, a cyclohexane diazoketone is reacted with an amine (...
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JPS63152339A |
NEW MATERIAL:The compound of formula I [R is hydroxyl-protecting group; X is H, CO2R' (R is H, 1W7C alkyl or means a salt of CO2H as CO2R') or group of formula II; when X is H, Y is CO2R' or group of formula III; when X is CO2 R' or grou...
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JPS63146813A |
PURPOSE: To obtain a carcinostatic agent containing a compound, extracted from ferns and having a diterpene skeleton as an active ingredient. CONSTITUTION: A carcinostatic agent containing a compound expressed by formula I (R1 is CH3 or ...
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JPS6328885B2 |
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JPS6328911B2 |
2-Aryl-3,4-diaza-bicyclo-[4.1.0]hept-2-en-5-ones, substituted in the phenyl ring, of the general formula their preparation, and therapeutic agents, containing these compounds, which may be used for the treatment of hypertension or of thr...
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