Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-((2S,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-chloro-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-3-yl ester 、
benzyl O-(3,4,6-tri-O-benzyl-α-D-glucopyranosyl)-(1-2)-O-(3,4,6-tri-O-benzyl-α-D-glucopyranosyl)-(1-2)-3,4,6-tri-O-benzyl-β-D-glucopyranoside 在
molecular sieve 、 silver perchlorate 作用下,
以
乙二醇二甲醚 、
乙醚 为溶剂,
反应 3.0h,
以39%的产率得到benzyl O-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl)-(1->2)-O-(3,4,6-tri-O-acetyl-α-D-glucopyranosyl)-(1->2)-O-(3,4,6-tri-O-benzyl-α-D-glucopyranosyl)-(1->2)-O-(3,4,6-tri-O-benzyl-α-D-glucopyranosyl)-(1->2)-3,4,6-tri-O-benzyl-β-D-glucopyranoside