This Hair is bright to provide Formula II compound or it can Drug Yong Which: Formula II, and wherein X is: R1 is H ,-CN or F; R2 is H or methyl; R3 is H; And R4 is H, methyl or ethyl; Or R3 and R4 Even is connected together Xing Cheng Ring Bing Ji Ring. Wherein X is:本發明提供了式II化合物或其可藥用鹽:式II,其中X是:R1是H、-CN或F;R2是H或甲基;R3是H;且R4是H、甲基或乙基;或者R3和R4連接在一起形成環丙基環。其中X是: