申请人:Banyu Pharmaceutical Co., Ltd.
公开号:EP0522504A1
公开(公告)日:1993-01-13
A compound of the formula (I):
wherein R¹ is a hydrogen atom or a methyl group, R² is a hydrogen atom or a negative charge, R³ is a hydrogen atom or a lower alkyl group, each of R⁴, R⁵ and R⁶ is a hydrogen atom, a cyano group, a methanesulfonyl group, a lower alkyl group which may have substituents, a carbamoyl group which may have substituents or a group of the formula -X-N(R⁷)R⁸ wherein each of R⁷ and R⁸ which may be the same or different, is a hydrogen atom or a lower alkyl group which may have substituents, or R⁷ and R⁸ form, together with the adjacent nitrogen atom and, if necessary, together with a hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom in addition to the adjacent nitrogen atom, a 3- to 8-membered heterocyclic group which may be substituted (provided that either the nitrogen atom adjacent to X or other nitrogen atom on the heterocyclic ring may form an ammonio group), and X is a lower alkylene group which may have substituents}, provided that at least one of R⁴, R⁵ and R⁶ is the group of the formula -X-N(R⁷)R⁸ wherein R⁷, R⁸ and X are as defined above, and Y is a lower alkylene group or a single bond; or a pharmaceutically acceptable salt or ester thereof.
式(I)的化合物:其中R¹是氢原子或甲基基团,R²是氢原子或负电荷,R³是氢原子或较低的烷基基团,R⁴、R⁵和R⁶中的每一个是氢原子、氰基、甲磺酰基、可能具有取代基的较低烷基基团、可能具有取代基的氨基甲酰基或式-X-N(R⁷)R⁸的基团其中R⁷和R⁸中的每一个可能相同或不同,是氢原子或可能具有取代基的较低烷基基团,或R⁷和R⁸与相邻的氮原子以及必要时与所选自氮原子、氧原子和硫原子的一种异原子(除了相邻的氮原子)一起形成可能具有取代基的3-至8-成员杂环基团(只要邻近X的氮原子或杂环环上的其他氮原子可能形成氨基基团),且X是可能具有取代基的较低烷基基团},但要求R⁴、R⁵和R⁶中至少有一个是式-X-N(R⁷)R⁸的基团,其中R⁷、R⁸和X如上所定义,Y是较低烷基基团或单键;或其药学上可接受的盐或酯。