Patent ID: 6214838
Filing Date: 2001-04-10
Classification: A61P,C07D

Abstract:
A compound of the formula (I): ##STR24##wherein R is hydrogen or C.sub.2-6 alkanoyl; X is halogen; and ring A is benzene ring which is optionally substituted by 1 to 4 substituents selected from (1) halogen, (2) hydroxy, (3) C.sub.1-6 alkoxy optionally substituted by halogen or phenyl, (4) C.sub.1-6 alkylthio optionally substituted by halogen or phenyl, (5) C.sub.1-6 alkyl optionally substituted by halogen , (6) C.sub.2-6 alkanoylamino or (7) carboxy optionally esterified by C.sub.1-6 alkyl, or a producing or a pharmaceutically acceptable salt thereof.