[(1E,3S)-2-methyl-1-(2-methyl-1,3-thiazol-4-yl)hexa-1,5-dien-3-yl] (3S,6R,7S,8S,10S)-3,7-bis[[tert-butyl(dimethyl)silyl]oxy]-4,4,6,8,10-pentamethyl-5-oxotridec-12-enoate 以81%的产率得到(Z)-(4S,7R,8S,9S,11S,16S)-4,8-Bis-(tert-butyl-dimethyl-silanyloxy)-5,5,7,9,11-pentamethyl-16-[(E)-1-methyl-2-(2-methyl-thiazol-4-yl)-vinyl]-oxacyclohexadec-13-ene-2,6-dione