申请人:——
公开号:US20020055513A1
公开(公告)日:2002-05-09
The present invention provides compounds of the formula:
1
a prodrug or a pharmaceutically acceptable salt thereof, wherein R
1
, R
2
, R
3
and Ar
1
are those defined herein, and methods for preparation and uses thereof.
本发明提供了以下公式的化合物:1a前体或其药用可接受的盐,其中R1、R2、R3和Ar1是在此定义的,以及其制备方法和用途。