苯甲醛二甲缩醛 、
allyl 4-O-benzyl-6-O-[4-O-benzyl-6-O-[(benzyl-7,8-di-O-benzyl-3-deoxy-α-D-manno-oct-2-ulopyranosid)onate]-2-deoxy-3-O-(4-methoxyphenylmethyl)-2-((R)-3-(octadecanoyloxy)octadecanoylamino)-β-D-glucopyranosyl]-2-deoxy-2-((R)-3-benzyloxyoctadecanoylamino)-α-D-glucopyranoside 在
L-camphorsulfonic acid 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以72%的产率得到allyl 4-O-benzyl-6-O-[4-O-benzyl-6-O-[(benzyl7,8-di-O-benzyl-4,5-O-benzylidene-3-deoxy-α-D-manno-oct-2-ulopyranosid)onate]-2-deoxy-3-O-(4-methoxyphenylmethyl)-2-((R)-3-(octadecanoyloxy)octadecanoylamino)-α-D-glucopyranosyl]-2-deoxy-2-((R)-3-benzyloxyoctadecanoylamino)-α-D-glucopyranoside