Document Type and Number:
Japanese Patent JPS5070356
Kind Code:
A
Abstract:
1427945 Derivatives of 3-aminopyrrole GRUPPO LEPETIT SpA 25 July 1974 [22 Aug 1973] 39790/73 Heading C2C The invention comprises compounds of formula and their salts with pharmaceutically acceptable acids, wherein R is hydrogen, (C 1-4 )alkyl, benzyl or halo-substituted benzyl; R 1 is hydrogen, (C 1-4 )alkyl, phenyl or phenyl carrying one to three substituents chosen from (C 1-4 )alkyl, (C 1-4 )alkoxy, benzyloxy, fluoro, chloro, bromo, hydroxy and nitro; R 2 is hydrogen, (C 1-4 )alkyl, formyl, (C 2-4 )aliphatic acyl, benzoyl, carbo- (C 1-4 )alkoxy -(C 2-4 )aliphatic acyl, carbamyl, phenylcarbamyl, thiocarbamyl, phenylthiocarbamyl, benzoylthiocarbamyl, carboxyphenyl, benzenesulphonyl, (C 1-4 )alkylsulphonyl, toluenesulphonyl or phenacylsulphonyl; R 3 is hydrogen or (C 1-4 )alkyl or R 2 and R 3 together are (C 2-4 )alkylidene, benzylidene or halo-substituted benzylidene; R 4 is (C 2-4 )- aliphatic acyl, benzoyl, benzoyl carrying one to three substituents chosen from fluoro, chloro, bromo and (C 1-4 )alkoxy, carbo(C 1-4 )alkoxy, carboxy, carbamyl, methylcarbamyl or phenylcarbamyl and R 5 is hydrogen, (C 1-4 )alkyl, carbo(C 1-4 )alkoxy, carbo (C 1-4 )alkoxy-methyl, trifluoromethyl, carboxy, carbamyl or carbazoyl or R 4 and R 5 together are -CO-(CH 2 ) n -, wherein the carbonyl group is connected to the carbon atom of the pyrrole ring which bears the substituent R 4 and n is 2, 3 or 4, provided that when R 1 =R 5 =Me and R=H, then one of R 2 , R 3 #H and R 4 #CO 2 Et. These compounds are prepared (when R=R 2 =R 3 =H) by reacting RNH-CHR 1 -CN with either R 2 COCH 2 R 4 or R 5 C # CR 4 and cyclizing the thus formed inter-- mediate of formula the products may then be reacted further if desired to convert the 3-NH 2 groups or other functional groups present to different substituent groups and/or replace the 1-H atom by R(#H). Therapeutic compositions having anti-inflammatory antipyretic and analgesic activity, C.N.S. depressant activity, and in some cases sedative and myorelaxing activity, comprise compounds of the above formula, and may be administered orally, parenterally or rectally.
Application Number:
JP9600974A
Publication Date:
June 11, 1975
Filing Date:
August 21, 1974
Export Citation:
International Classes:
A61K31/40; A61K31/402; A61K31/403; C07D209/30; A61K31/404; A61P29/00; C07D207/34; C07D207/36; C07D209/40; (IPC1-7): A61K31/40; C07D207/34; C07D209/30