1,2:4,5-二异亚丙基-D-甘露糖醇

trans-3,4-didehydro-3,4-dideoxy-1,2:5,6-di-O-isopropylidene-D-threo-hexitol

(R)-(+)-2,2-二甲基-1,3-二氧戊环-4-羧酸甲酯

5,6-di-O-isopropylidene-D-glucono-1,4-lactone