Dithiocarbonic acid O-((3aR,7S,7aR)-4-benzyloxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl) ester S-methyl ester 、 alkaline earth salt of/the/ methylsulfuric acid 以
苯 为溶剂,
以62%的产率得到(3aR,7S,7aR)-7-Allyl-4-benzyloxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran