4-(2,4-dimethoxyphenyl-Fmoc-aminomethyl)phenoxyacetoamide-norleucyl-p-methylbenzhydrylamine resin 、
(2R)-3-{3-[(9-fluorenylmethoxy)carbonylamino]propanoylamino}-2-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)propanoic acid 在
二异戊胺 、
1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 tert-butyl (2R)-3-[[(2S)-3-[[(2R)-3-(9H-fluoren-9-ylmethoxycarbonylamino)-2-[(2S,3S,4R,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]propanoyl]amino]-2-[(2S,3S,4R,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]propanoyl]amino]-2-[(2S,3S,4R,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]propanoate