(R)-3-{Benzyloxy-[({[2-(N'-tert-butoxycarbonyl-hydrazino)-2-oxo-ethylcarbamoyl]-methyl}-methyl-carbamoyl)-methyl]-carbamoyl}-tetrahydro-pyridazine-1-carboxylic acid benzyl ester 在
N-乙基马来酰亚胺 、
silver cyanide 、
溶剂黄146 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 、
锌 作用下,
以
二氯甲烷 、
苯 为溶剂,
反应 5.55h,
生成 (4aR,19S,20S)-20-Amino-6-benzyloxy-19-isopropyl-9,15-dimethyl-5,8,11,14,17,21-hexaoxo-octadecahydro-18-oxa-1,6,9,12,15,21a-hexaaza-benzocyclononadecene-1-carboxylic acid benzyl ester