3-amino-3-N-benzyl-3-C-cyano-3-deoxy-1,2-O-isopropylidene-3-N-phenylmethanesulfonyl-5-O-trityl-α-D-ribofuranose

(E)-5,7-di-O-benzyl-2,3-dideoxy-4,6-O-isopropylidene-D-ribo-hept-2-enitol

(2S,4R)-tetrahdyro-4-hydroxy-3-methylidenefuran-2-methanol