(2S,3S,4S,7S,9S,10S)-7,9-bis(tert-butyldimethylsilanyloxy)-3-(4-methoxybenzyloxy)-2,4,10-trimethyl-13-trityloxytrideca-5,11-dien-1-ol

(4S,5R,6S,9S,11S,12S)-9,11-bis(tert-butyldimethylsilanyloxy)-5-(4-methoxybenzyloxy)-4,6,12-trimethyl-15-trityloxypentadeca-7,13-dienoic acid ethyl ester

(4R,5S,7S)-5,7,8-tris(tert-butyldimethylsilanyloxy)-4-methyloct-2-enoic acid ethyl ester

4(S)-benzyl-3-[9(S),11(S)-bis(tert-butyldimethylsilanyloxy)-5(R)-(4-methoxybenzyloxy)-4(S),6(S),12(S)-trimethyl-15-trityloxypentadeca-7,13-dienoyl]oxazolidin-2-one

(2S,4S,5R,6S,9S,11S,12S)-9,11-bis(tert-butyldimethylsilanyloxy)-5-(4-methoxybenzyloxy)-2,4,6,12-tetramethyl-15-trityloxypentadeca-7,13-dien-1-ol