(2S,6R,11S)-2-((R)-1-bromopropan-2-yl)-11-methyl-1,7-dioxaspiro[5.5]undecane

(2R,4aR,6S,8R,8aR)-8-(benzyloxy)-6-((1S,3S)-1-(benzyloxy)-3-((2S,6R,11S)-11-methyl-1,7-dioxaspiro[5.5]undecan-2-yl)butyl)-2-(but-3-en-1-yl)-2-methoxy-7-methyleneoctahydropyrano[3,2-b]pyran

3-((2S,4aR,6S,8R,8aR)-8-(benzyloxy)-6-((1S,3S)-1-(benzyloxy)-3-((2S,6R,11S)-11-methyl-1,7-dioxaspiro[5.5]undecan-2-yl)butyl)-2-methoxy-7-methyleneoctahydropyrano[3,2-b]pyran-2-yl)propanal

dimethyl (4-((2S,4aR,6S,8R,8aR)-8-(benzyloxy)-6-((1S,3S)-1-(benzyloxy)-3-((2S,6R,11S)-11-methyl-1,7-dioxaspiro[5.5]undecan-2-yl)butyl)-2-methoxy-7-methyleneoctahydropyrano[3,2-b]pyran-2-yl)-2-oxobutyl)phosphonate