(2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-carbaldehyde 、
聚合甲醛 、
sodium hydroxide 在
氯化钠 、
乙酸乙酯 、
magnesium sulfate 、
(2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-carbaldehyde 作用下,
以
1,4-二氧六环 为溶剂,
反应 16.0h,
以to obtain the title compound (2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydro-pyran-2-carbaldehyde 6p (1.27 g, pale yellow grease), which的产率得到(2S,3S,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-2-(hydroxymethyl)-6-methoxy-tetrahydropyran-2-carbaldehyde