申请人:SUNTORY LIMITED
公开号:US20030078256A1
公开(公告)日:2003-04-24
Disclosed are benzothiazine derivatives represented by the following formula (I):
1
wherein the dashed line indicates the presence or absence of a bond; Z represents one of the following groups:
2
in which R
1
and R
2
individually represent alkyl, aralkyl or the like, R
3
represents H, alkyl or the like, R
4
represents H, aralkyl or the like, X
1
, X
2
and X
3
individually represent O or S, and G represents substituted or unsubstituted ethylene, trimethylene or the like; Q
1
and Q
2
individually represent H, OH, halogen, alkoxy or the like; A represents alkylene, alkenylene or the like; Y represents CH, C═ or N; when Y is CH, m stands for 0 or 1, n stands for 1 or 2, B represents O, S, carbonyl or the like, when Y is C═, m stands for 1, n stands for 1 or 2, B represents:
3
in which the double bond is linked to Y, R
6
represents substituted or unsubstituted aryl or the like; when Y is N, m stands for 0 or 1, n stands for 2 or 3 and B represents carbonyl, sulfonyl or the like, E
1
and E
2
individually represent H or lower alkyl; and D represents an aromatic hydrocarbon group or an aromatic heterocyclic group; and salts thereof.
The benzothiazine derivatives (I) and their salts according to the present invention have strong serotonin-2 blocking action, have excellent selectivity to this action against &agr;
1
blocking action and have high safety. Accordingly, the present invention has made it possible to provide pharmaceuticals making use of antagonistic action against serotonin-2 receptors, for example, therapeutics for various circulatory diseases such as ishemic heart diseases, cerebrovascular disturbances and peripheral circulatory disturbances.
所公开的是由下式(I)代表的苯并噻嗪衍生物:
1
其中虚线表示键的存在或不存在;Z 代表下列基团之一:
2
其中 R
1
和 R
2
分别代表烷基、芳基或类似物质,R
3
代表 H、烷基或类似物,R
4
代表 H、烷基或类似物,X
1
, X
2
和 X
3
分别代表 O 或 S,G 代表取代或未取代的乙烯、三亚甲基烯或类似物质; Q
1
和 Q
2
分别代表 H、OH、卤素、烷氧基或类似物;A 代表亚烷基、烯基或类似物;Y 代表 CH、C&boxH 或 N;当 Y 为 CH 时,m 代表 0 或 1,n 代表 1 或 2,B 代表 O、S、羰基或类似物,当 Y 为 C&boxH 时,m 代表 1,n 代表 1 或 2,B 代表:
3
其中双键与 Y 连接,R
6
代表取代或未取代的芳基或类似物;当 Y 为 N 时,m 代表 0 或 1,n 代表 2 或 3,B 代表羰基、磺酰基或类似物,E
1
和 E
2
分别代表 H 或低级烷基;以及 D 代表芳香烃基团或芳香杂环基团;及其盐类。
根据本发明的苯并噻嗪衍生物(I)及其盐类具有很强的 5-羟色胺-2-阻断作用,对&agr;
1
阻断作用,并且安全性高。因此,本发明可以提供利用对 5-羟色胺-2受体的拮抗作用的药物,例如治疗各种循环系统疾病,如缺血性心脏病、脑血管障碍和外周循环障碍的药物。