Patent ID: 6143779
Filing Date: 2000-11-07
Classification: A61P,C07D

Abstract:
A new benzofuranone derivative represented by the following general formula (I): ##STR5## wherein R.sub.1 -R.sub.5 represent hydrogen, a hydroxy group, or a straight or branched alkyl, alkyloxy or aralkyloxy group having 1-7 carbon atoms, a halogen, an amino group or an alkylene dioxy group joined at R.sub.1 and R.sub.2, R.sub.2 and R.sub.3, R.sub.3 and R.sub.4, or R.sub.4 and R.sub.5, respectively, R.sub.6 represents a hydroxy group, or a straight or branched alkyloxy or an aralkyloxy group having 1-7 carbon atoms, or a caroboxylic acid ester having 1-7 carbon atoms with the proviso that when R.sub.2 and R.sub.6 are both hydroxy, then R.sub.1, R.sub.3, R.sub.4 and R.sub.5 are not hydrogen and further when R.sub.6 is a hydroxy group, and R.sub.1 R.sub.2, R.sub.4 and R.sub.5 are hydrogen, then R.sub.3 is not a methoxy group and still further when R.sub.2 and R.sub.6 are both hydroxy, and R.sub.1, R.sub.4 and R.sub.5 are hydrogen, then R.sub.3 is not hydroxy and yet still further when R.sub.4 and R.sub.6 are both hydroxy, and R.sub.1, R.sub.2 and R.sub.5 are hydrogen, then R.sub.3 is not hydroxy.