methyl (R)-4-((2S,4S,6S)-4-acetoxy-6-(((2S,6R,Z)-4-(bromomethylene)-6-formyltetrahydro-2H-pyran-2-yl)methyl)-6-methoxy-5,5-dimethyltetrahydro-2H-pyran-2-yl)-3-((tert-butyldiphenylsilyl)oxy)butanoate

4-[4-acetoxy-6-(4-bromomethylene-6-vinyl-tetrahydro-pyran-2-ylmethyl)-6-methoxy-5,5-dimethyl-tetrahydro-pyran-2-yl]-3-hydroxy-butyric acid methyl ester

4-[(S)-4-acetoxy-6-((2S,6R)-4-bromomethylene-6-vinyl-tetrahydro-pyran-2-ylmethyl)-6-methoxy-5,5-dimethyl-tetrahydro-pyran-2-yl]-3-(tert-butyl-diphenyl-silanyloxy)-butyric acid methyl ester

tert-butyl((2,2-dimethylbut-3-yn-1-yl)oxy)dimethylsilane

(S)-5-hydroxy-6-((4R,5R)-2,2,5-trimethyl-[1,3]dioxolan-4-yl)-hex-2-ynoic acid methyl ester

E-7-(tert-butyl-dimethyl-silanyloxy)-3-[2-hydroxy-3-(2,2,5-trimethyl-[1,3]dioxolan-4-yl)-propyl]-6,6-dimethyl-hept-2-en-4-ynoic acid methyl ester

methyl (E)-2-((2S,6S)-2-(1-((tert-butyldimethylsilyl)oxy)-2-methylpropan-2-yl)-2-methoxy-3-oxo-6-(((4R,5R)-2,2,5-trimethyl-1,3-dioxolan-4-yl)methyl)tetrahydro-4H-pyran-4-ylidene)acetate

4-(tert-butyl-dimethyl-silanyloxy)-3,3-dimethyl-butan-2-one

[3-acetoxy-2-(1,1-dimethyl-octa-2,7-dienyl)-2-methoxy-6-(2,2,5-trimetyl-[1,3]dioxolan-4-ylmethyl)-tetrahydro-pyran-4-ylidene]-acetic acid methyl ester

methyl (E)-2-((2S,3S,6S)-3-acetoxy-6-((2R,3R)-2,3-dihydroxybutyl)-2-hydroxy-2-((E)-2-methylnona-3,8-dien-2-yl)tetrahydro-4H-pyran-4-ylidene)acetate