(2R,4E,6R,8S,9R,10S,11Z,13S,15S,16R,17E)-9,13,15-tris(tert-butyldimethylsilyloxy)-2-[(2S,4S,5S)-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl]-6,8,10,16-tetramethyl-19-(trityloxy)nonadeca-4,11,17-trien-3-one

((2E,4R,5S,7S,8Z,10S,11R,12S,14R)-5,7,11,15-tetrakis(tert-butyldimethylsilyloxy)-4,10,12,14-tetramethylpentadeca-2,8-dienyloxy)triphenylmethane

(2R,4S,5R,6S)-7-(4-methoxybenzyloxy)-5-(tert-butyldimethylsilyloxy)-2,4,6-trimethylheptan-1-ol

(2E,4R,5S,7S,10S,11R,12S,14R)-5,11,15-tris(tert-butyldimethylsilyloxy)-4,10,12,14-tetramethyl-1-(trityloxy)pentadec-2-en-8-yn-7-ol

ethyl (4R,5S,2E)-5,7-bis(tert-butyldimethylsilyloxy)-4-methylhept-2-enoate