Patent ID: 6392059
Filing Date: 2002-05-21
Classification: C07D

Abstract:
A hydronaphtho[2,3-c]furan compound represented by formula (1) wherein R1 denotes a lower alkyl group or substituted or unsubstituted aralkyl group, R2 denotes a hydrogen atom, lower alkyl group or substituted or unsubstituted aralkyl group, R3 and R4 together denote an oxygen atom or methylene group, or R3 denotes a hydrogen atom and R4 denotes a hydroxyl group, lower alkoxy group, substituted or unsubstituted aralkyloxy group or lower acyloxy group, R5 and R6 together denote an oxygen atom, or R5 denotes a hydrogen atom and R6 denotes a hydroxyl group, lower alkoxy group, substituted or unsubstituted aralkyloxy group or lower acyloxy group, and, in the case of broken line accompanied, one denotes single bond and the other denotes double bond, or both denote single bonds.