Di-O-benzyl-L-1,5-anhydro-2-deoxy-erythro-pent-1-enitol
(4R,5S)-tetrahydro-2H-pyran-2,4,5-triol
Ethyl (6R)-6-Benzyloxy-7-tosyloxy-2,4-heptadienoate
Ethyl (6R)-6-hydroxy-7-tosyloxyheptanoate
(6R)-6-Benzyloxy-7-hydroxy-2,4-heptadienoic acid ethyl ester