| 摘要 |
<p>PURPOSE:Title compounds of formula I [A,B,D are each -C(R<3>) =, -S-,-N=,-N(R<4>) -; R<1> is lower alkoxycarbonyl, lower alkylcarbonyl; R<2> is lower alkyl; R<3>, R<4> are H, lower alkyl, thiol]; for example, N-(1-methyl2-mercapto-5-imidazolyl) aminomethylene-malonic acid ethyl ester.</p> |
