1,2:5,6-di-O-isopropylidene-α-D-galactofuranose 、 (3R,4R,5R)-5-(tert-Butyl-diphenyl-silanyloxy)-3,4-dimethoxy-hexanoic acid 在
4-吡咯烷基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
以98%的产率得到(3R,4R,5R)-5-(tert-Butyl-diphenyl-silanyloxy)-3,4-dimethoxy-hexanoic acid (3aR,5S,6S,6aR)-5-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl ester