methyl 3-O-benzyl-4-O-(3-O-benzyl-4-O-(3-O-benzyl-4-O-(3-O-benzyl-4-O-benzylsulfonyl-2,6-dideoxy-β-D-arabinohexopyranosyl)-2,6-dideoxy-β-D-arabino-hexopyranosyl)-2,6-dideoxy-β-D-arabino-hexopyranosyl)-2,6-dideoxy-α-D-arabino-hexopyranoside 在
sodium amide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以68%的产率得到methyl 3-O-benzyl-4-O-(3-O-benzyl-4-O-(3-O-benzyl-4-O-(3-O-benzyl-2,6-dideoxy-β-D-arabinohexopyranosyl)-2,6-dideoxy-β-D-arabino-hexopyranosyl)-2,6-dideoxy-β-D-arabino-hexopyranosyl)-2,6-dideoxy-α-D-arabino-hexopyranoside