| abstract |
1. A compound of the formula (I) in which R1 is H, OH or NH2; R2 is R´, (C7-C8) alkyl, (C1-C6) alkylene, (C2-C6) alkenyl, (C2-C6) alkynyl, (C1-C6) -OR´ alkylene, (C1-) alkylene C6) -CH [R´] 2, (C1-C6) alkylene -C (O) -R ', (C1-C6) alkylene -C (O) NH2, (C1-C6) alkylene -C (O) NH -R ', (C1-C6) alkylene -C (O) NH-(C1-C6) alkyl, (C1-C6) alkylene -C (O) N [(C1-C6) alkyl] 2, (C1-) alkylene C6) -C (O) N [R '] 2; (C1-C6) alkylene -C (O) O-C1-C6 alkyl, C (O) O-C1-C6 alkyl, C (O) OR ', C (O) -C1-C6 alkyl ), C (O) R ', C (O) -NH-alkenyl (C2-C6), C (O) -NH-alkynyl (C2-C6), C (O) NH-alkyl (C1-C6), C (O) NHR ', C (O) -NH-(C1-C6) alkylene-C', C (O) N [(C1-C6) alkyl] R ', C (O) N [(C1-) alkyl C6)] 2, C (O) -C1-C6 alkylene -R´, C (O) O-C1-C6 alkylene -R´; or R2 is (C1-C6) alkyl, with the proviso that in said moiety, at least one hydrogen is substituted with OH, OCH3, COOH, COOCH3, NH2, NHCH3, N (CH3) 2, CONH2, CONHCH3 or CON ( CH3) 2; or R2 is a (C1-C4) alkylene bonded to cycloalkylamine, where (C1-C4) alkylene forms a second bond with a different carbon atom of the cycloalkylamine ring and forms, together with cycloalkylamine carbon atoms, a second ring of 4-8 members; R3 is H, halogen, (C1-C6) alkyl, ... |