methyl (2R,3S,4R)-3-[tert-butyl(dimethyl)silyl]oxy-4-[(4R,5R)-5-[(E,4R)-4-[(4R,5S)-5-[(1R)-1-[tert-butyl(dimethyl)silyl]oxypropyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-2-methyl-3-oxopent-1-enyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-2-methylpentanoate 在
platinum on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
以91%的产率得到methyl (2R,3S,4R)-3-[tert-butyl(dimethyl)silyl]oxy-4-[(4R,5R)-5-[(2R,4R)-4-[(4R,5S)-5-[(1R)-1-[tert-butyl(dimethyl)silyl]oxypropyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-2-methyl-3-oxopentyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-2-methylpentanoate