((2R,3S)-3-Benzyloxy-tetrahydro-pyran-2-yl)-acetonitrile

(4aR,6S,7R,8aS)-2,2-Dimethyl-6-prop-2-ynyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-ol

Acetic acid (4aR,6S,7R,8aS)-2,2-dimethyl-6-prop-2-ynyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

(4aR,7R,8aS)-7-(tert-Butyl-dimethyl-silanyloxy)-2,2-dimethyl-tetrahydro-pyrano[3,2-d][1,3]dioxin-6-one

[(4aR,6S,7R,8aS)-7-(tert-Butyl-dimethyl-silanyloxy)-2,2-dimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yl]-acetaldehyde