(8R,10S,12S,15S)-15-[(3R)-4-hydroxy-3-methyl-2-methylenebutyl]-10-[2-(p-methoxybenzyloxy)ethyl]-9,14-dioxa-1,5-dithiadispiro[5.1.5.3]hexadecan-12-ol

(6S,9R)-1-{(4R,6S)-6-[2-(p-methoxybenzyloxy)ethyl]-2,2-dimethyl[1,3]dioxan-4-yl}-9-methyl-8-methylene-6,10-bis(triethylsilanyloxy)dec-3-yn-2-ol

1-{(4S,6S)-6-[2-(p-methoxybenzyloxy)ethyl]-2,2-dimethyl[1,3]dioxan-4-yl}-3-[2-[(2S,5R)-5-methyl-4-methylene-2,6-bis(triethylsilanyloxy)hexyl][1,3]dithian-2-yl]propan-2-one