Diethyl 2-[2-(carbamothioylamino)ethylsulfanylmethyl]-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 75.0h,
                                                                                                                生成                                                 N-<2-<(3,5-diethoxycarbonyl-1,4-dihydro-6-methyl-4-(3-nitrophenyl)pyridin-2-yl)methylthio>ethyl>-N'-<3-(imidazol-4(5)-yl)propyl>guanidine 2HBr