methyl 6-[(2R,3R,4S,5S,6R)-4-[[(4aR,6R,7R,8S,8aS)-2-phenyl-7,8-bis(phenylmethoxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-6-[[tert-butyl(diphenyl)silyl]oxymethyl]-3-(2-chloroacetyl)oxy-5-(4-oxopentanoyloxy)oxan-2-yl]oxyhexanoate 在
碳酸氢钠 作用下,
以
甲醇 为溶剂,
以98%的产率得到methyl 6-[(2R,3R,4R,5S,6R)-4-[[(4aR,6R,7R,8S,8aS)-2-phenyl-7,8-bis(phenylmethoxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-6-[[tert-butyl(diphenyl)silyl]oxymethyl]-3-hydroxy-5-(4-oxopentanoyloxy)oxan-2-yl]oxyhexanoate