(4R,5R)-N4,N4,N5,N5,2,2-hexamethyl-1,3-dioxolane-4,5-dicarboxamide

(2S,3S)-1,4-diazido-2,3-O-isopropylidene-2,3-butanediol

(-)-(4S,5S)-2,2-dimethyl-[1,3]-dioxolane-4,5-dicarbonitrile

(4R,5R)-4,5-二乙氧基羰基-2,2-二甲基二氧

(-)-二甲基-2,3-邻异丙亚基-L-酒石酸酯