4,6-DI-t-BUTYL-2,3-DIHYDROBENZOTHIOPHENES WHICH INHIBIT LDL OXIDATION
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP0791589A1
公开(公告)日:1997-08-27
A compound represented by formula (I):
wherein R1 represents a hydrogen atom, a lower alkyl group or an acyl group; R2 and R3, which may be the same or different, each represents a hydrogen atom, an optionally substituted alkyl group, or an optionally substituted alkenyl group; R4 represents a hydrogen atom, an optionally substituted alkyl group, or an optionally substituted alkenyl group, or R4 forms a double bond between the carbon atom to which R3 is bonded and the adjacent carbon atom to form a benzothiophene skeleton, or R3 and R4 are taken together to form a 5- to 8-membered spiro ring which may contain a hetero atom, e.g., oxygen, sulfur or nitrogen; and n represents an integer of 0 to 2,
or a pharmaceutically acceptable salt thereof. The compound of formula (I) exhibits an inhibitory action on the oxidative modification of LDL and is useful as therapeutics of arteriosclerosis.
An intimal thickening inhibitory agent comprising, as an active ingredient, a compound represented by formula (1):
wherein
X represents an oxygen atom or a group of formula (2):
wherein
n represents an integer of from 0 to 2,
R1 represents a hydrogen atom or an acyl group; R2 represents a hydrogen atom, a lower alkyl group or a lower alkenyl group; R3 represents a lower alkyl group; and R4, R5, and R6, which may be the same or different, each represent a hydrogen atom or a substituted or unsubstituted alkyl group; or R3 and R4 may be taken together to form a 5-membered ring; or R5 and R6 may be taken together to form a cycloalkyl group; provided that R6 is nil when R3 and R4 are taken together to form benzofuran or benzo[b]thiophene.
REMEDIES FOR RENAL DISEASES AND ORGAN-PRESERVING AGENTS
申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP0950405A1
公开(公告)日:1999-10-20
Herein disclosed are therapeutic agents for renal diseases and organ preservatives containing a compound represented by the general formula (1):
wherein X represents an oxygen atom or a group represented by the general formula (2):
where n represents an integer from 0 to 2, R1 represents a hydrogen atom or an acyl group, R2 represents a hydrogen atom, a lower alkyl group or a lower alkenyl group, R3 represents a lower alkyl group, R4, R5 and R6, which may be the same or different, each represents a hydrogen atom or an optionally substituted alkyl group, and R6 further represents a formyl, carboxyl, lower alkoxycarbonyl or optionally substituted carbamoyl group, or R3 and R4 may be taken together to form a five-membered ring, or R5 and R6 may be taken together to form a cycloalkyl group, provided that when the five-membered ring formed by R3 and R4 and the benzene ring form benzofuran or benzo[b]thiophene, R6 is absent.