申请人:Kishikawa Kuniyuki
公开号:US20090137583A1
公开(公告)日:2009-05-28
The present invention provides 2-aminoquinazoline derivatives represented by formula (I):
wherein R
1
and R
2
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 CR
7a
R
7b
wherein R
7a
and R
7b
may be the same or different and each represents a hydrogen atom, and the like;
when X is a bond, R
3
represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group;
when X is CR
7a
R
7b
wherein R
7a
and R
7b
have the same meanings as defined above, respectively, R
3
represents substituted or unsubstituted lower alkoxy, substituted or unsubstituted aryl, and the like;
R
4
represents a hydrogen atom, hydroxy, substituted or unsubstituted lower alkoxy, and the like; and
R
5
represents a hydrogen atom, substituted or unsubstituted aryl, and the like, or a pharmaceutically acceptable salt thereof.
本发明提供了由式(I)表示的2-氨基喹唑啉衍生物:其中R1和R2可以相同或不同,每个代表氢原子,取代或未取代的低烷基等;X表示键或CR7aR7b,其中R7a和R7b可以相同或不同,每个代表氢原子等;当X为键时,R3表示取代或未取代的芳基或取代或未取代的芳香杂环基;当X为CR7aR7b时,其中R7a和R7b的含义分别如上所定义,R3表示取代或未取代的低烷氧基,取代或未取代的芳基等;R4表示氢原子,羟基,取代或未取代的低烷氧基等;而R5表示氢原子,取代或未取代的芳基等,或其药学上可接受的盐。