(3S,4R,5E)-3-(tert-butyldimethylsilyloxy)-N-methoxy-N,4-dimethyl-7-(trityloxy)hept-5-enamide

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

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