Diisopropyl-carbamic acid (R)-1-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-methyl-2-oxo-pent-3-enyl ester 在
lithium aluminium tetrahydride 、
四丁基氟化铵 作用下,
生成
Diisopropyl-carbamic acid (4S,5R,6S)-4-methyl-6-(2-methyl-propenyl)-2-oxo-[1,3]dioxan-5-yl ester