{3-[(2R,3R,4S,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-3-hydroxy-tetrahydro-furan-2-yl]-5-methyl-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl}-acetic acid benzyl ester 在
palladium on activated charcoal
氢气 作用下,
以85%的产率得到{3-[(2R,3R,4S,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-3-hydroxy-tetrahydro-furan-2-yl]-5-methyl-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl}-acetic acid