The present invention relates to a process for preparing benzo[c]phenanthridinium derivatives of the general formula A:
wherein M and N individually represent a hydroxyl or lower alkoxy group, or M and N simultaneously represent a hydrogen atom or together form a methylenedioxy group, X⁻ represents an acid residue or a hydrogen acid residue, and R represents a lower alkyl group. This process has good reproducibility and may be effected under moderate conditions, and therefore the process is practically useful. Also, it has been found that certain novel benzo[c]phenanthridinium derivatives, prepared by the present process, have not only an antitumor activity but also an inhibition activity on blood platelet aggregation. In addition, hydrogen salts of the present compounds have an enhanced stability, which is an advantage in formulating into phamaceutical preparations.
本发明涉及一种制备通式 A 的
苯并[c]菲啶鎓衍
生物的工艺:
其中 M 和 N 分别代表羟基或低级烷
氧基,或 M 和 N 同时代表
氢原子或共同形成亚
甲基二
氧基,X- 代表酸残基或
氢酸残基,R 代表低级烷基。该工艺具有良好的重现性,可在中等条件下进行,因此该工艺非常实用。此外,还发现通过本工艺制备的某些新型
苯并[c]菲啶衍
生物不仅具有抗肿瘤活性,还具有抑制血小板聚集的活性。此外,本发明化合物的
氢盐具有更高的稳定性,这在配制成医药制剂方面具有优势。