3R,4R,N-cyclohexyl-2-methylene-3,4,5-trihydroxypentanamide 4,5-acetonide

3S,4R,N-cyclohexyl-2-methylene-3,4,5-trihydroxypentanamide 4,5-acetonide

苯基氯硫代甲酸酯

(R)-(-)-对甲基苯磺酸-2,2-二甲基-1,3-二氧戊环基-4-甲酯

(S)-4-苄氧甲基-2,2-二甲基-1,3-二氧戊环