(2S,4E)-2-[N-(trityl)amino]-1-O-tert-butyldimethylsilyl-3-oxo-4-octadecene

(2S,3R,4E)-2-azido-3-benzoyloxy-4-octadecen-1-ol

1-溴十三烷

(4R,5R)-5-benzyloxy-4-ethynyl-2,2-dimethyl-1,3-dioxane