3-methyl-4,5-dioxo-tetrahydro-furan-3-carboxylic acid ethyl ester 、
叔丁基二甲基氯硅烷 在
咪唑 作用下,
生成 (3S,4S)-4-Hydroxy-3-methyl-5-oxo-tetrahydro-furan-3-carboxylic acid ethyl ester 、 (3R,4R)-4-Hydroxy-3-methyl-5-oxo-tetrahydro-furan-3-carboxylic acid ethyl ester 、
(3S,4R)-4-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-5-oxo-tetrahydro-furan-3-carboxylic acid ethyl ester