申请人:BENNETT Nicholas J.
                            
                            
                                公开号:US20090209524A1
                            
                            
                                公开(公告)日:2009-08-20
                            
                            The present invention provides compounds of formula (1)
wherein R
1
, R
2
, R
3
and R
4
are as defined in the specification, and pharmaceutically acceptable salts thereof, as well as processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
                            本发明提供了式(1)的化合物
其中R1、R2、R3和R4如规范中所定义,并且其药学上可接受的盐,以及制备它们的方法,含有它们的制药组合物以及它们在治疗中的使用。