申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP1878727A1
公开(公告)日:2008-01-16
The present invention provides 2-aminoquinazoline derivatives represented by formula (I):
wherein R1 and R2 may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, and the like;
X represents a bond or CR7aR7b wherein R7a and R7b may be the same or different and each represents a hydrogen atom, and the like;
when X is a bond, R3 represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group;
when X is CR7aR7b wherein R7a and R7b have the same meanings as defined above, respectively, R3 represents substituted or unsubstituted lower alkoxy, substituted or unsubstituted aryl, and the like;
R4 represents a hydrogen atom, hydroxy, substituted or unsubstituted lower alkoxy, and the like; and
R5 represents a hydrogen atom, substituted or unsubstituted aryl, and the like, or a pharmaceutically acceptable salt thereof.
本发明提供了式 (I) 所代表的 2-氨基喹唑啉衍生物:
其中 R1 和 R2 可以相同或不同,各自代表氢原子、取代或未取代的低级烷基等;
X 代表键或 CR7aR7b,其中 R7a 和 R7b 可以相同或不同,各自代表氢原子等;
当 X 为键时,R3 代表取代或未取代的芳基或取代或未取代的芳香杂环基团;
当 X 为 CR7aR7b 时,其中 R7a 和 R7b 分别具有与上述定义相同的含义,R3 代表取代或未取代的低级烷氧基、取代或未取代的芳基等;
R4 代表氢原子、羟基、取代或未取代的低级烷氧基等;以及
R5 代表氢原子、取代或未取代的芳基等,或其药学上可接受的盐。