{2-Benzyloxy-5-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-6-oxo-6H-[1,3]oxazin-4-yl}-acetic acid ethyl ester 在
palladium on activated charcoal
氢气 作用下,
以
四氢呋喃 为溶剂,
生成 {5-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2,6-dioxo-3,6-dihydro-2H-[1,3]oxazin-4-yl}-acetic acid ethyl ester