[(2R,5S,7R,8S)-2-Butyl-2-((S)-2,2-diethyl-[1,3]dioxolan-4-yl)-8-methyl-1,6-dioxa-spiro[4.5]dec-7-yl]-acetaldehyde

2-[(2R,5S,7R,8S)-2-Butyl-2-((S)-2,2-diethyl-[1,3]dioxolan-4-yl)-8-methyl-1,6-dioxa-spiro[4.5]dec-7-yl]-ethanol

(R)-4-(tert-Butyl-dimethyl-silanyloxy)-4-((S)-2,2-diethyl-[1,3]dioxolan-4-yl)-octanal

(2R,5S,7R,8S)-2-Butyl-7-but-2-ynyl-2-((S)-2,2-diethyl-[1,3]dioxolan-4-yl)-8-methyl-1,6-dioxa-spiro[4.5]decane

(2R,5S,7R,8S)-2-Butyl-2-((S)-2,2-diethyl-[1,3]dioxolan-4-yl)-7-((E)-3-iodo-but-2-enyl)-8-methyl-1,6-dioxa-spiro[4.5]decane