(3S)-3-[[(2S)-2-[[(2S)-5-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]-2-[[(2R)-2-[[(3S)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoyl]amino]propanoyl]amino]pentanoyl]-methylamino]-3-phenylpropanoyl]amino]-4-oxo-4-[(3,4,5-trioctadecoxyphenyl)methoxy]butanoic acid 在
哌啶 、
N,N-二异丙基乙胺 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
反应 5.0h,
以60%的产率得到15-O-tert-butyl 11-O-[(3,4,5-trioctadecoxyphenyl)methyl] (2R,5S,8S,11S,15S)-8-benzyl-5-[3-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethylamino]propyl]-2,7-dimethyl-3,6,9,13,17-pentaoxo-1,4,7,10,14-pentazacycloheptadecane-11,15-dicarboxylate