Trifluoro-methanesulfonic acid (3aR,5R,6R,6aR)-2,2-dimethyl-5-vinyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl ester

(3R,4S,5R)-4-Benzyloxymethyl-5-ethyl-tetrahydro-furan-2,3-diol

(3aR,5R,6R,6aR)-6-Benzyloxymethyl-5-ethyl-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxole