11-(tert-butyl-dimethyl-silanyloxy)-7-[1-(tert-butyl-dimethyl-silanyloxy)-3-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-allyl]-18-methoxy-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-9,19-dien-3-yn-5-one

tert-butyl-[5-(6-[1,3]dioxolan-2-ylmethyl-3-methoxy-3,6-dihydro-2H-pyran-2-yl)-2-methylene-pentyloxy]-diphenyl-silane

(2R,6S)-2-(tert-butyldimethylsilanyloxymethyl)-6-((4RS)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)dihydropyran-3-one

[(2R,3R,6S)-6-((2RS)-2,3-dihydroxypropyl)-3-methyltetrahydropyran-2-yl]acetyl methyl ester

[(2R,3R,6S)-6-((4RS)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-3-methyltetrahydropyran-2-yl]acetyl methyl ester