The present invention is directed to a compound of formula (1),
wherein R
1
, R
2
, R
3
, R
4
, A, L and n are as defined herein, its pharmaceutical composition, preparation and uses as a MMP inhibitor.
本发明涉及化合物式(1),其中R1、R2、R3、R4、A、L和n如本文所定义,以及其制备的药物组合物和用途作为MMP
抑制剂。