The present invention provides a compound of the Formula (I), wherein X is selected from the group consisting of (II); R is selected from the group consisting of H and CH3; R1 is selected from the group consisting of H, CH3, F, Cl, OCH3, C(O)OH, C(O)NH2 and (III); or a pharmaceutically acceptable salt thereof.
本发明提供了一种式(I)的化合物,其中X选自(II)组成的群;R选自H和
CH3组成的群;R1选自H、 、F、Cl、O 、C(O)OH、C(O)NH2和(III)组成的群;或其药用可接受的盐。