碘苯二乙酸 、
methyl 2,3,4-tri-O-acetyl-α-D-lyxopyranosyl(1->4)-6-deoxy-2,3-di-O-methyl-6-(4-nitrophenylsulfonylamino)-α-D-glucopyranoside 在
碘 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
生成 methyl 5β-acetoxy-2,3,4-tri-O-acetyl-α-D-lyxopyranosyl(1->4)-6-deoxy-2,3-di-O-methyl-6-(4-nitrophenylsulfonylamino)-α-D-glucopyranoside 、 methyl 5α-acetoxy-2,3,4-tri-O-acetyl-α-D-lyxopyranosyl(1->4)-6-deoxy-2,3-di-O-methyl-6-(4-nitrophenylsulfonylamino)-α-D-glucopyranoside