申请人:Kyowa Hakko Kirin Co., Ltd
公开号:US07906522B2
公开(公告)日:2011-03-15
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.
本发明提供了由式(I)表示的2-氨基喹唑啉衍生物:其中R1和R2可以相同也可以不同,分别表示氢原子,取代或未取代的低碳基等; X表示键或CR7aR7b,其中R7a和R7b可以相同也可以不同,分别表示氢原子等;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的含义如上所定义,R3表示取代或未取代的低碳氧基、取代或未取代的芳基等;R4表示氢原子、羟基、取代或未取代的低碳氧基等;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。