(2S,3S)-1,3-isopropylidenedioxy-2-aminooctadecane

(2R,3S,4R)-1,3-isopropylidenedioxy-2,4-dimethyl-5-(phenylsulfonyl)pentane

(3aR,5aS,8aS,8bR)-4-bromo-2,2,7,7-tetramethyl-3a,5a,8a,8b-tetrahydrobenzo(1,2-d),(3,4-d')bis(1,3)dioxole

t-butyl (3S*,5R*,6E)-7-phenyl-3,5-isopropylidenedioxy-6-heptenoate

(4R,5R,12R,13R)-5-hydroxytricosa-12,13-isopropylidenedioxy-8-yn-1,4-olide