Compounds having the formula [Chemical formula should be inserted here. Please see paper copy] wherein R
1
, R
2
, R
3
, R
6
, R
7
and Ar are as defined in the specification, in vivo-hydrolysable precursors thereof, pharmaceutically-acceptable salts thereof, the use in therapy and pharmaceutical compositions and methods of treatment using the same.
化合物的
化学式为[
化学式应在此处插入。请参阅纸质副本],其中R1,R2,R3,R6,R7和Ar如规范中定义,它们的体内可
水解前体,它们的药学上可接受的盐,以及它们在治疗中的用途和制药组合物以及使用它们的治疗方法。