ethyl 6-O-trityl-β-D-glucopyranosyl-(1->2)-β-D-xylopyranosyl-(1->4)-3-O-allyl-6-O-benzyl-1-thio-α-D-mannopyranoside 、
溴甲苯 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以92%的产率得到ethyl 2,3,4-tri-O-benzyl-6-O-trityl-β-D-glucopyranosyl-(1->2)-2,3,4-tri-O-benzyl-β-D-xylopyranosyl-(1->4)-3-O-allyl-6-O-benzyl-1-thio-α-D-mannopyranoside