2-(trimethylsilyloxy)pyridine 、
α-D-1,3,5-tri-O-benzoyl-2-O-[3-(trifluoromethyl)benzoyl]ribofuranose 在
四氯化锡 作用下,
以
乙腈 为溶剂,
以94%的产率得到(2R,3R,4R,5R)-4-(benzoyloxy)-5-((benzoyloxy)methyl)-2-(2-oxopyridin-1(2H)-yl)tetrahydrofuran-3-yl 3-(trifluoromethyl)benzoate