4-methylphenyl 2-O-acetyl-3-O-(6-O-acetyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl)-4,6-di-O-benzyl-1-thio-α-D-mannopyranoside 在
ethanaminium,N-(difluoro-λ
4-sulfanylidene)-N-ethyl-,tetrafluoroborate 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以45%的产率得到2-O-acetyl-3-O-(6-O-acetyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl)-4,6-di-O-benzyl-α-D-mannopyranosyl fluoride