((4R,5S)-2,2-Dimethyl-5-oct-2-ynyl-[1,3]dioxolan-4-yl)-methanol

3,4-O-isopropylidene-2-deoxy-D-ribono-1,5-lactone

((4R,5S)-2,2-dimethyl-5-(prop-2-yn-1-yl)-1,3-dioxolan-4-yl)methanol