methyl 6-O-amino-3,4-di-O-benzyl-2-O-tert-butoxycarbonylmethyl-α-D-glucopyranoside 、 methyl 3,4-di-O-benzyl-2-O-carboxymethyl-6-O-[(methyl 3,4-di-O-benzyl-6-O-phthalimido-α-D-glucopyranosid-2-yloxy)methylcarbonylamino]-α-D-glucopyranoside 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 作用下,
以
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
以51%的产率得到tert-butyl 2-[(2S,3R,4S,5R,6R)-6-[[[2-[(2S,3R,4S,5R,6R)-6-[[[2-[(2S,3R,4S,5R,6R)-6-[(1,3-dioxoisoindol-2-yl)oxymethyl]-2-methoxy-4,5-bis(phenylmethoxy)oxan-3-yl]oxyacetyl]amino]oxymethyl]-2-methoxy-4,5-bis(phenylmethoxy)oxan-3-yl]oxyacetyl]amino]oxymethyl]-2-methoxy-4,5-bis(phenylmethoxy)oxan-3-yl]oxyacetate