(4R)-4-(but-3-yn-1-yl)-2,2-dimethyl-1,3-dioxolane

(2R,5S,6S,9R)-1,2;9,10-di-O-isopropylidene-1,2,9,10-tetraol 5,6-bis-p-toluenesulfonate

acetic acid 1-(5-hydroxymethyltetrahydrofuran-2-yl)-pent-4-enyl ester

acetic acid 1-but-3-enyl-2-hydroxyhex-5-enyl ester

(2R,5E,9R)-1,2;9,10-di-O-isopropylidene-5-decene-1,2,9,10-tetraol