Patent ID: 6169116
Filing Date: 2001-01-02
Classification: A61P,C07C,C07D

Abstract:
A compound of formula I ##STR6## wherein R.sub.1 and R.sub.2, independently, are hydrogen, (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, (C.sub.1-4)alkylthio, halogen, trifluoromethyl, trifluoromethoxy, cyano, (C.sub.2-5)alkanoyl, (C.sub.1-4)alkylsulfonyl or sulfamoyl, R.sub.3 is hydrogen, hydroxy, (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, halogen, cyano, (C.sub.2-5)alkanoyl, carbamoyl, (C.sub.1-4)alkylsulfonyloxy or trifluoromethylsulfonyloxy, and R.sub.4 and R.sub.5, independently, are hydrogen, (C.sub.1-4)alkyl, hydroxy(C.sub.2-4)alkyl or phenyl(C.sub.1-4)alkyl, in free base or acid addition salt form.