[4-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyloxy)phenyl]acetic acid 、
N-[2-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyloxy)ethyl]-S-(triphenylmethyl)-L-cysteinamide 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以60%的产率得到N-[4-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyloxy)phenyl]acetyl-S-(triphenylmethyl)-L-cysteine [2-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyloxy)ethyl]amide