(4S)-4-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-4-(2-methoxyethoxymethoxy)-3,3-dimethylbutan-2-one 在
吡啶 、
lithium diisopropyl amide 作用下,
反应 2.83h,
生成 Benzoic acid (1S,5S)-1-[(1S,2R)-4-(tert-butyl-diphenyl-silanyloxy)-1-methyl-2-(tetrahydro-pyran-2-yloxy)-butyl]-5-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-5-(2-methoxy-ethoxymethoxy)-4,4-dimethyl-3-oxo-pentyl ester