甲醇 、
4-[[(3aS,4R,6S,7R,7aR)-4-[[tert-butyl(diphenyl)silyl]oxymethyl]-7-hydroxy-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl]sulfanyl]butanoic acid 、 alkaline earth salt of/the/ methylsulfuric acid 以35%的产率得到(3aS,4R,7R,7aS)-4-[[3,5-bis(trifluoromethyl)phenyl]methoxymethyl]-6-methoxy-2,2-dimethyl-7-phenylmethoxy-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran