(S)-2-[(S)-2-((R)-2-Benzyloxycarbonylamino-2-phenyl-acetylamino)-3-phenyl-propionylamino]-3-phenyl-propionic acid 、
methyl (2R)-2-[4-[(2S,3R,4S,5R,6R)-3-[(2S,4S,5R,6S)-5-acetyloxy-6-methyl-4-[(2,2,2-trifluoroacetyl)amino]oxan-2-yl]oxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxyphenyl]-2-aminoacetate 在
1-羟基苯并三唑 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以83%的产率得到N-(N-Z-D-phenylglycyl-L-phenylalanyl-L-phenylalanyl)-4-[2-O-(4-O-acetyl-2,3,6-trideoxy-3-trifluoroacetamido-α-L-arabino-hexopyranosyl)-3,4,6-tri-O-benzyl-β-D-glucopyranosyloxy]-D-phenylglycine methyl ester