Pharmaceutical compounds

摘要

Pharmaceutical compounds of the formula <IMAGE>xyl, halo, C1-4 alkyl, C1-4 alkoxy, acyloxy, -O-glucoside, optionally substituted phenyl or optionally substituted phenyl-C1-4 alkoxy; R3 is tetrazolyl, or and R4 and R5 are each hydrogen, hydroxy, acyloxy, nitro, C1-4 alkyl, C1-4 alkoxy, halo, optionally substituted phenyl, -SO3H or -NR'R'' where R' and R'' are each hydrogen or C1-4 alkyl; provided that when R3 is -CR'R''.CHR'''CO2H or tetrazolyl, R1 and R2 are each hydroxyl, halo, C1-4 alkyl, C1-4 alkoxy, acyloxy, -O-glucoside, optionally substituted phenyl or optionally substituted phenyl C1-4 alkoxy; and or a pharmaceutically acceptable salt or ester thereof.