Ergoline derivatives, their preparation and therapeutic composition containing them
申请人:FARMITALIA CARLO ERBA S.p.A.
公开号:EP0008802A1
公开(公告)日:1980-03-19
The novel ergoline derivatives of the general formula 1
wherein R, represents an alkyl or alkoxy group having from 1 to 4 carbon atoms, phenyl, a 5- or 6-membered heterocyclic ring which is preferably saturated, an amino group, a substituted amino group of the formula NHR' (wherein R' represents an alkyl group having from 1 to 4 carbona toms, a cycloalkyl group, a benzyl group or a phenyl group), or a substituted amino group of the formula NR"R"' (wherein R" and R"' both represent alkyl groups having from 1 to 4 carbon atoms);
R2 represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms or a phenyl group;
R, represents a halogen atom, a cyano group, a halogenated lower alkyl group, methylthio, methylsulfonyl or sulfonamido group, an alkoxy group having from 1 to 4 carbon atoms, an acyl group having from 2 to 5 carbon atoms or a benzoyl group;
R. represents a hydrocarbon group having from 1 to4 carbon atoms;
R5 represents a hydrogen atom or a methoxy group;
R4 is hydrogen, a halogen atom or a methyl group;
R, is hydrogen or a methyl group; and the pharmaceutically acceptable addition salts with organic or inorganic acids thereof exhibit antihypertensive and antiprolactinic activity. Their preparation is described, e.g. 2-cyano-3- (6'-methyl-ergoline-8'β)-propionic acid ethyl ester is obtained by reacting sodium ethyl cyanoacetate with 6-methyl-8β-tosyloxymethylergoline
通式 1 的新型麦角啉衍生物
其中 R 代表具有 1 至 4 个碳原子的烷基或烷氧基、苯基、优选饱和的 5 或 6 元杂环、氨基、式 NHR'(其中 R'代表具有 1 至 4 个碳原子的烷基、环烷基、苄基或苯基)的取代氨基或式 NR "R"'(其中 R "和 R""'均代表具有 1 至 4 个碳原子的烷基)的取代氨基;
R2 代表氢原子、具有 1 至 4 个碳原子的烷基或苯基;
R 代表卤素原子、氰基、卤代低级烷基、甲硫基、甲磺酰基或磺酰胺基、具有 1 至 4 个碳原子的烷氧基、具有 2 至 5 个碳原子的酰基或苯甲酰基;
R. 代表具有 1 至 4 个碳原子的烃基;
R5 代表氢原子或甲氧基;
R4 是氢、卤素原子或甲基;
R,是氢原子或甲基;其与有机酸或无机酸的药学上可接受的加成盐具有抗高血压和抗催乳素活性。它们的制备方法已作了描述,例如,2-氰基-3-(6'-甲基麦角林-8'β)-丙酸乙酯是通过氰基乙酸钠与 6-甲基-8β-叔丁氧甲基麦角林反应得到的