Benzimidazole derivatives, their production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0425921A1
公开(公告)日:1991-05-08
Novel imidazole derivatives of the formula (I):
wherein R¹ is an optionally substituted alkyl group, R² and R³ are independently a group capable of forming anion or a group which can be changed thereinto, ring A is benzene ring optionally having, besides the group shown by R², further substituents, and X shows linkage of phenylene group and phenyl group directly or through a spacer whose atomic chain is not more than 2 and a salt thereof, show antagonistic actions to angiotensin II, thus being useful as therapeutics for cardiovascular diseases.
A series of substituted 2-butylbenzimidazoles bearing a biphenylylmethyl moiety at the 1-position was prepared via three synthetic routes and evaluated for angiotensinII (AII) receptorantagonistic activity (in vitro and in vivo). Binding affinity was determined using bovine adrenal cortical membrane. Substitution at the 4-, 5-, or 6-position reduced the affinity relative to that of the unsubstituted