methyl (6-O-benzyl-2,3,4-tri-O-methyl-α-D-glucopyranosyl)-(1→4)-(6-O-(2-naphthyl)methyl-β-D-glucopyranosyl)-(1→4)-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1→4)-(6-O-tert-butyldiphenylsilyl-3-O-methyl-α-L-idopyranosyl)-(1→4)-2,3,6-tri-O-benzyl-α-D-glucopyranoside 、
碘甲烷 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 、 mineral oil 为溶剂,
反应 3.5h,
以85%的产率得到methyl (6-O-benzyl-2,3,4-tri-O-methyl-α-D-glucopyranosyl)-(1→4)-(2,3-di-O-methyl-6-O-(2-naphthyl)methyl-β-D-glucopyranosyl)-(1→4)-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1→4)-(6-O-tert-butyldiphenylsilyl-2,3-di-O-methyl-α-L-idopyranosyl)-(1→4)-2,3,6-tri-O-benzyl-α-D-glucopyranoside