A compound of the formula I
wherein R represents a hydrogen atom or a C₁ -C₄ alkyl group; R₁ represents a hydrogen, a halogen atom, a methyl group, a phenylthio group or an alkylthio group having from 1 to 4 carbon atoms; R₂ represents a hydrogen atom or a methoxy group; R₃ represents a hydrogen atom or R₂ and R₃ together represent a chemical bond; R₄ represents a hydrocarbon group having from 1 to 4 carbon atoms; R₅ represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms or a phenyl group and n is 0, 1 or 2 or a pharmaceutically acceptable salt thereof. Such compounds are useful as dopaminergic agents. A method of preparation and pharmaceutical compositions comprising them are also provided.
式 I 的化合物
其中 R 代表氢原子或 C₁ -C₄ 烷基;R₁ 代表氢、卤素原子、甲基、苯
硫基或具有 1 至 4 个碳原子的烷
硫基;R₂ 代表氢原子或甲氧基;R₃ 代表氢原子或 R₂ 和 R₃ 共同代表一个
化学键; R₄ 代表具有 1 至 4 个碳原子的烃基; R₅ 代表氢原子、具有 1 至 4 个碳原子的烷基或苯基,且 n 为 0、1 或 2 或其药学上可接受的盐。此类化合物可用作
多巴胺能药物。还提供了一种制备方法和包含它们的药物组合物。