Patent ID: 6150412
Filing Date: 2000-11-21
Classification: A61P,C07C

Abstract:
A compound of formula I ##STR9## wherein R.sub.1 is nitro, cyano, formyl or carboxy; R.sub.2 is --A--R.sub.4, whereinA is a branched or straight chain C.sub.1-9 alkylene andR.sub.4 is carboxy or 5-tetrazolyl;R.sub.3 is nitro, cyano, halogen, formyl, carboxy, C.sub.1-5 alkyl carbonyl, aryl carbonyl or SO.sub.2 R.sub.6, whereinR.sub.6 is a branched or straight chain C.sub.1-5 alkyl, aryl alkyl, aryl or NR.sub.7 R.sub.8, whereinR.sub.7 and R.sub.8 are independently hydrogen, a branched or straight chain C.sub.1-5 alkyl or together form a C.sub.3-6 ring; or a pharmaceutically acceptable ester or salt thereof.