申请人:BANYU PHARMACEUTICAL CO., LTD.
公开号:EP0544307A1
公开(公告)日:1993-06-02
A compound of the formula:
wherein R¹ is a hydrogen atom or a methyl group, R² is a hydrogen atom or a negative charge, X is a group of -N(R³)R⁴ (wherein R³ is a lower alkyl group, and R⁴ is a hydrogen atom or a lower alkyl group) or a group of -N⁺(R⁵)(R⁶)R⁷ (wherein each of R⁵, R⁶ and R⁷ which may be the same or different, is a lower alkyl group), and n is an integer of from 2 to 4; or a pharmaceutically acceptable salt or ester thereof.
式中的化合物:
其中 R¹ 是氢原子或甲基,R² 是氢原子或负电荷,X 是 -N(R³)R⁴ 的基团(其中 R³ 是低级烷基,R⁴ 是氢原子或低级烷基)或 -N⁺(R⁵)(R⁵) 的基团、或-N⁺(R⁵)(R⁶)R⁷的基团(其中 R⁵、R⁶和 R⁷ 可以相同或不同,各自为低级烷基),且 n 为 2 至 4 的整数;或其药学上可接受的盐或酯。