(2R,4R,5R)-4-(benzyloxy)-5-((benzyloxy)methyl)-2-(pent-4-en-1-yloxy)dihydrofuran-3(2H)-one

pent-4-enyl 2-O-benzoyl-3,5-di-O-benzyl-β-D-ribofuranoside

pent-4-enyl 3,5-di-O-benzyl-β-D-ribofuranoside

3,5-di-O-benzyl-α-D-ribofuranoside (prop-2-yn-1-yl)-1,2-orthobenzoate