1-(5-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-1-deoxy-β-D-ribofuranos-1-yl)pent-4-yn-3-one

1-(5-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-1-deoxy-β-D-ribofuranos-1-yl)-5-phenylpent-4-yn-3-one