4-(4-Bromo-phenyl)-3-{N'-[1-cyano-1-ethoxycarbonyl-meth-(E)-ylidene]-hydrazino}-6-methyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid ethyl ester 在
三乙胺 作用下,
以
乙醇 为溶剂,
以68%的产率得到diethyl 6-amino-13-(4-bromophenyl)-11-methyl-3,4,7,8,10-pentazatricyclo[7.4.0.02,7]trideca-1,3,5,8,10,12-hexaene-5,12-dicarboxylate