phenyl 2,3,4-tri-O-(4-methoxyphenylmethyl)-6-O-triphenylmethyl-α-D-galactopyranosyl-(1->4)-2,3-di-O-(4-methoxyphenylmethyl)-1-thio-β-D-galactopyranoside 、
三苯基氯甲烷 在
吡啶 作用下,
反应 1.5h,
以98%的产率得到phenyl 2,3,4-tri-O-(4-methoxyphenylmethyl)-6-O-triphenylmethyl-α-D-galactopyranosyl-(1->4)-2,3-di-O-(4-methoxyphenylmethyl)-1-thio-6-O-triphenylmethyl-β-D-galactopyranoside