Bile acid derivatives, their salts and production thereof
申请人:WAKUNAGA SEIYAKU KABUSHIKI KAISHA
公开号:EP0259185A1
公开(公告)日:1988-03-09
Bile acid derivative of the following formula (I):
wherein: X is a halogen atom; R₁ is a hydrogen atom or a lower alkyl group; Y is
(wherein n is an integer of from 0 to 5); each of R₂ and R₃ is a hydrogen atom or a hydroxyl group; R₄ is a hydroxyl group, lower alkoxyl group,
(wherein R₅ is a hydrogen atom or a lower alkoxyl group, R₆ is a carboxyl group, benzyloxycarbonyl group or sulfonyl group, or a salt thereof, and m is an integer of from 1 to 4); the intermittent line, ...., is an α-bond; and the wavy line, , is an α- or β-bond, and a salt thereof and their production.