2-deoxy-4,5-O-isopropylidene-D-threo-pent-1-enose diethyl dithioacetal

(3R,4'R)-3-(2,2'-dimethyl-[1',3']-dioxolan-4'-yl)-3-(4''-methoxy-benzyloxy)-propionaldehyde

1,2-O-isopropylidene-3-O-methanesulfonyl-5Z-undecen-1,2R,3R-triol

(Z)-(R)-1-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-non-3-en-1-ol

1,2-O-isopropylidene-3-O-p-toluenesulfonyl-5Z-undecen-1,2R,3R-triol