申请人:SANRAKU-OCEAN CO., LTD.
公开号:EP0017970A1
公开(公告)日:1980-10-29
A compound of the formula
wherein R1 represents a hydrogen atom, a hydroxil group or a methyl group, R2 represents a lower alkyl group or an aralkyl group, substituted or unsubstituted, having 7 to 20 carbon atoms, and X represents a bromine or iodine atom. This compound is prepared by reacting a compound of the formula
wherein Rj and R2 are as defined above, and Z represents an amino group or a blocked amino group, with a brominating or iodinating agent selected from the group consisting of N-bromimides, N-bromamides, N-iodimides, N-iodamides und alkali metal iodides. It can be converted into a useful compound having excellent pharmacological activity and having the formula
wherein R1 represents a hydrogen atom, n hydroxyl group or a methyl group, R4 represents a lower alkyl group, a hydroxy lower alkyl group, a lower alkoxy-lower alkyl group, a di(lower alkyl)aminolower alkyl group, a lower alkanoyloxy-lower alkyl group, a benzoylamino-lower alkyl group, a cyclohexyl group, a phenyl group, or a 5- or 6-membered
式中的化合物
其中 R1 代表氢原子、羟基或甲基,R2 代表具有 7 至 20 个碳原子的取代或未取代的低级烷基或芳烷基,X 代表溴原子或碘原子。这种化合物是通过反应式如下的化合物制备的
其中 Rj 和 R2 如上定义,Z 代表氨基或封端氨基,与选自 N-溴亚胺、N-溴酰胺、N-碘亚胺、N-碘酰胺和碱金属碘化物的溴化剂或碘化剂反应。它可以转化为具有优异药理活性的有用化合物,其式如下
其中 R1 代表氢原子、n 个羟基或甲基,R4 代表低级烷基、羟基低级烷基、低级烷氧基低级烷基、二(低级烷基)氨基低级烷基、低级烷酰氧基低级烷基、苯甲酰基氨基低级烷基、环己基、苯基或 5- 或 6-元