申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP0541120A2
公开(公告)日:1993-05-12
A novel xanthine derivative of the formula (I):
wherein one of R1 and R2 represents substituted or unsubstituted lower alkyl, lower alkenyl, lower alkynyl, substituted or unsubstituted alicyclic alkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted benzyl; and the other represents
wherein m is 2 or 3, and X is
where a is NH, O or S, and b and d are the same or different and are CH or N or
where e, g and h are the same or different and are CH or N; Q represents
(wherein R3 and R4 are the same or different and are substituted or unsubstituted alicyclic alkyl),
(wherein Y is a single bond or alkylene, n is 0 or 1),
(wherein - - - - is a single or double bond. Y is the same as defined above), or
(wherein Y is the same as defined above); or a pharmacologically accetable salt thereof is disclosed. This derivative has anti - dementia activity.
一种式(I)的新型黄嘌呤衍生物:
其中 R1 和 R2 之一代表取代或未取代的低级烷基、低级烯基、低级炔基、取代或未取代的脂环 烷基、取代或未取代的苯基或取代或未取代的苄基;另一个代表
其中 m 是 2 或 3,X 是
其中 a 是 NH、O 或 S,b 和 d 相同或不同,并且是 CH 或 N 或
其中 e、g 和 h 相同或不同,并且是 CH 或 N; Q 代表
(其中 R3 和 R4 相同或不同,并且是取代或未取代的脂环烷基)、
(其中 Y 为单键或亚烷基,n 为 0 或 1)、
(其中 - - - - 是单键或双键,Y 与上述定义相同),或
(其中 Y 与上述定义相同);或其药理可接受的盐。这种衍生物具有抗痴呆活性。