O-(2,3,4,6,7-Penta-O-acetyl-L-glycero-α-D-manno-heptopyranosyl)-(1->5)-O-<(methyl-(4,5,7,8-tetra-O-acetyl-3-desoxy-α-D-manno-2-octulopyranosyl)onat)-(2->4)>-methyl-(7,8-di-O-acetyl-3-desoxy-α-D-manno-2-octulopyranosylbromid)onat 、
烯丙醇 在
4 A molecular sieve 、 Ag-silicate 作用下,
以
二氯甲烷 为溶剂,
以68%的产率得到Allyl-O-(2,3,4,6,7-penta-O-acetyl-L-glycero-α-D-manno-heptopyranosyl)-(1->5)-O-<(methyl-(4,5,7,8-tetra-O-acetyl-3-desoxy-α-D-manno-2-octulopyranosyl)onat)-(2->4)>-methyl-(7,8-di-O-acetyl-3-desoxy-β-D-manno-2-octulopyranosid)onat