(E)-4-(tert-Butyl-diphenyl-silanyloxy)-5-oxo-2-(2-oxo-propyl)-pent-2-enoic acid methyl ester 在
samarium diiodide 作用下,
以
四氢呋喃 为溶剂,
生成 (3S,4S,5R)-3-(tert-Butyl-diphenyl-silanyloxy)-4,5-dihydroxy-5-methyl-cyclohex-1-enecarboxylic acid methyl ester 、 (3S,4R,5S)-3-(tert-Butyl-diphenyl-silanyloxy)-4,5-dihydroxy-5-methyl-cyclohex-1-enecarboxylic acid methyl ester