摘要：

wherein R 1 is selected from the group consisting of OSO 2 CF 3 , OSO 2 CH 3 , SO 2 R 3 , COCF 3 , COCH 3 and COCH 2 CH 3 , wherein R 3 is as defined hereafter; R 2 is selected from the group consisting of C 1 -C 4 alkyls, allyl, CH 2 CH 2 CH 2 F, CH 2 CF 3 , 3,3,3-trifluoropropyl and 4,4,4-trifluorobutyl; R 3 is selected from the group consisting of C 1 -C 3 alkyls, CF 3 , and N(CH 3 ) 2 ; with the proviso that when R 1 is SO 2 R 3 and R 3 is a C 1 -C 3 alkyl, then R 2 is not CH 2 CH 2 OCH 3 ; or a pharmaceutically acceptable salt thereof are provided. Also, pharmaceutical compositions comprising the above compound and methods wherein the above compound is used for the treatment of various disorders are provided.

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