1-(tert-butyl-diphenyl-silanyloxy)-5-(6-[1,3]dioxolan-2-ylmethyl-3-methoxy-3,6-dihydro-2H-pyran-2-yl)-pent-3-yn-2-one

1-(tert-butyl-diphenyl-silanyloxy)-5-(6-[1,3]dioxolan-2-ylmethyl-3-methoxy-3,6-dihydro-2H-pyran-2-yl)-pent-3-yn-2-ol

tert-butyl-(6-[1,3]dioxolan-2-ylmethyl-3-methoxy-3,6-dihydro-2H-pyran-2-ylmethoxy)-dimethyl-silane

5-(3-methoxy-6-prop-2-ynyl-3,6-dihydro-2H-pyran-2-yl)-2-methylene-pentan-1-ol

5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enoic acid methyl ester