Ergoline derivatives of formula (I)
wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom or a methoxy group, X represents an oxygen or sulphur atom or a NH or NCH3 group, R3 represents a hydrogen atom, a trifluoromethyl or phenyl group or an alkyl group having from 1 to 4 carbon atoms, R4 represents a hydrogen atom, a methyl or acetyl group or an alkyl group having from 1 to 4 carbon atoms, or R3 and R4 together represent a 3 or 4 membered carbon atom chain, Y represents an electron withdrawing group such as a cyano, nitro, alkylsulphonyl or alkylsulphinyl group or a group of the formula CORs wherein Rs represents an alkyl group having from 1 to 4 carbon atoms or a phenyl, alkoxy, amino or N-substituted amino group or Rs an R3 together represent a 2 or 3 membered carbon atom chain, R6 represents a hydrocarbon group having from 1 to 4 carbon atoms or a benzyl or phenethyl group, and R7 represents a hydrogen or halogen atom or a methyl or formyl group or a group of the formula SRB wherein R8 represents an alkyl group having from 1 to 4 carbon atoms or a phenyl group. The pharmaceutically acceptable addition salts and their preparation are disclosed. In form of therapeutical compositions the compounds exhibit useful pharmacological properties.
式(I)的麦角啉衍
生物
其中 R1 代表氢原子或甲基,R2 代表氢原子或甲氧基,X 代表氧原子或
硫原子或 NH 或 NCH3 基团,R3 代表氢原子、三
氟甲基或苯基或具有 1 至 4 个碳原子的烷基,R4 代表氢原子、甲基或乙酰基或具有 1 至 4 个碳原子的烷基,或 R3 和 R4 共同代表 3 或 4 个分子的碳原子链,Y 代表取电子基团,如
氰基、硝基、烷基磺酰基或烷基亚磺酰基或式(CORs)中的基团、其中 Rs 代表具有 1 至 4 个碳原子的烷基或苯基、烷氧基、
氨基或 N-取代
氨基,或 Rs 和 R3 共同代表 2 或 3 个分子的碳原子链、R6 代表具有 1 至 4 个碳原子的烃基或苄基或苯乙基,R7 代表氢原子或卤素原子或甲基或甲酰基或式 SRB 的基团,其中 R8 代表具有 1 至 4 个碳原子的烷基或苯基。公开了药学上可接受的加成盐及其制备方法。这些化合物以治疗组合物的形式表现出有用的药理特性。