(2S)-2-[(2R,3R,4aR,5'R,6S,6''R,7aR)-6''[(1E)-5-[(tert-butyldiphenylsilyl)oxy]pent-1-en-1-yl]-3-methyl-3,3''4,4a,6,6'',7,7a-octahydrodispiro[furo[3,2-b]pyran-2,2'-oxolane-5',2''-pyran]-6-yl]-2-((triisopropylsilyl)oxy)ethyl pivalate

(6S)-6-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-6-((4-methoxybenzyl)oxy)-1-(trimethylsilyl)hex-1-yn-3-ol

(S)-6-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-6-((4-methoxybenzyl)oxy)-1-(trimethylsilyl)hex-1-yn-3-one

((2R,3S,6R)-6-methoxy-3-((4-methoxybenzyl)oxy)-6-((trimethylsilyl)ethynyl)tetrahydro-2H-pyran-2-yl)methanol

(2R,6R)-2-((E)-5-((tert-butyldiphenylsilyl)oxy)pent-1-en-1-yl)-6-methoxy-6-((trimethylsilyl)ethynyl)-5,6-dihydro-2H-pyran-3-yl trifluoromethanesulfonate