Hexanedioic acid mono-[(3S,5S,8R,9S,10R,13R,14R,15R,17R)-5-hydroxy-10,13-dimethyl-17-(6-oxo-6H-pyran-3-yl)-hexadecahydro-20-oxa-cyclopropa[14,15]cyclopenta[a]phenanthren-3-yl] ester 在
N,N'-二环己基碳二亚胺 作用下,
以
吡啶 、
乙酸乙酯 为溶剂,
反应 18.0h,
生成
(S)-5-Guanidino-2-{5-[(3S,5S,8R,9S,10R,13R,14R,15R,17R)-5-hydroxy-10,13-dimethyl-17-(6-oxo-6H-pyran-3-yl)-hexadecahydro-20-oxa-cyclopropa[14,15]cyclopenta[a]phenanthren-3-yloxycarbonyl]-pentanoylamino}-pentanoic acid