申请人:Eisai Co., Ltd.
公开号:EP0503426A1
公开(公告)日:1992-09-16
The object of the present invention is to provide a quinone derivative exhibiting an excellent activity as a drug.
The present invention provides a quinone derivative represented by the general formula (I) or a pharmacologically acceptable salt thereof:
wherein A stands for a group represented by the formula:
(wherein R³, R⁴ and R⁵ is the same or different from each other and each stand for a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, an alkoxyalkyl group, an alkoxyalkoxy group, a cycloalkylalkoxy group, a thiol group or a thioalkyl group, with the proviso that a case wherein R³ and R⁴ are each a lower alkoxy group simultaneously is excepted) or a group represented by the formula:
(wherein R³, R⁴ and R⁵ is the same or different from each other and each stand for a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, an alkoxyalkyl group, an alkoxyalkoxy group, a cycloalkylalkoxy group, a thiol group or a thioalkyl group, with the proviso that a case wherein R³ and R⁴ are each a lower alkoxy group simultaneously is excepted; X and Y is the same or different from each other and each stand for a hydroxyl group or a protected hydroxyl group);
R¹ stands for a heteroarylalkyl group; and
B stands for a carboxyl group or a protected carboxyl group.
本发明的目的是提供一种作为药物具有优异活性的醌衍生物。
本发明提供了一种由通式(I)代表的醌衍生物或其药理学上可接受的盐:
其中 A 代表由式表示的基团:
(其中 R³、R⁴ 和 R⁵ 彼此相同或不同,且各自代表氢原子、羟基、低级烷基、低级烷氧基、烷氧基烷基、烷氧基烷氧基、环烷氧基烷基、硫醇基或硫代烷基,但 R³ 和 R⁴ 同时各自为低级烷氧基的情况除外)或由式表示的基团:
(其中,R³、R⁴ 和 R⁵ 相互相同或不同,各自代表氢原子、羟基、低级烷基、低级烷氧基、烷氧基烷基、烷氧基烷氧基、环烷氧基烷基、硫醇基或硫代烷基,但 R³ 和 R⁴ 同时各自代表低级烷氧基的情况除外;X 和 Y 彼此相同或不同,各自代表一个羟基或一个受保护的羟基);
R¹ 代表杂芳基烷基;以及
B 代表羧基或受保护的羧基。