1,10-diacetylsulfanyl-4,7-dioxadecane 、 2-(RS)-[2,3,6-tri-O-acetyl-4-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-β-D-glucopyranosyloxy]-1-[(cis)-2-dimethylaminocarbonyl-2-methyl[1,3]dioxan-5-yloxy]-24,25-epoxy-4,7,10,13,16,19,22-heptaoxapentacosane 在
potassium carbonate 、
sodium methylate 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 21.0h,
以75%的产率得到1-[(cis)-2-dimethylaminocarbonyl-2-methyl[1,3]dioxan-5-yloxy]-2-(RS)-[4-O-(β-D-galactopyranosyl)-β-D-glucopyranosyloxy]-24-(RS)-hydroxy-36-mercapto-4,7,10,13,16,19,22,30,33-nonaoxa-26-thiahexatriacontane