申请人:Feng Lichun
                            
                            
                                公开号:US08809369B2
                            
                            
                                公开(公告)日:2014-08-19
                            
                            
The present invention relates to a compound of formula (I)
or a pharmaceutically acceptable salt or ester thereof, wherein R1 to R8, A1 to A3 have the are as described herein and compositions including the compounds.
                            本发明涉及公式(I)的化合物或其药学上可接受的盐或酯,其中R1至R8,A1至A3具有如下所述的区域,并包括含有该化合物的组合物。