(2R,3S,4R,7S)-3,7-bis((tert-butyldimethylsilyl)oxy)-8-(1,3-dioxolan-2-yl)-2,4,6,6-tetramethyl-5-oxooctanal

(3S,6R,7S,8S)-3,7-Bis-(tert-butyl-dimethyl-silanyloxy)-9-(4-methoxy-benzyloxy)-4,4,6,8-tetramethyl-5-oxo-nonanoic acid 2-trimethylsilanyl-ethyl ester

(4S,7R,8S,9S)-4,8-bis{[tert-butyl(dimethyl)silyl]oxy}-5,5,7,9-tetramethyl-11-(phenylsulfonyl)undec-1-en-6-one

(5S,8R,9S)-5-((1,3-dioxolan-2-yl)methyl)-9-((S)-1-((4-methoxybenzyl)oxy)propan-2-yl)-2,2,3,3,6,6,8,11,11,12,12-undecamethyl-4,10-dioxa-3,11-disilatridecan-7-one