(2R,3S,5R,6R,1'R)-3-formyl-2-[(6'-tert-butyldimethylsilyl)oxy-1'-methoxymethoxy-2'-hexynyl]-5,6-dimethoxy-5,6-dimethyl-1,4-dioxane 、
(S)-4-[17-(Diethoxy-phosphoryl)-16-oxo-heptadec-2-ynyloxymethyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester 在
N,N-二异丙基乙胺 、
lithium chloride 作用下,
以
乙腈 为溶剂,
反应 12.0h,
以45.9%的产率得到(2R,3R,5R,6R,1'E,4''S,1'''R)-3-[18'-(3''-tert-butoxycarbonyl-2'',2''-dimethyloxazolidin-4''-yl)methoxy-3'-oxo-1'-octadecen-16'-ynyl]-2-[6'''-(tert-butyldimethylsilyl)oxo-1'''-methoxymethoxy-2'''-hexynyl]-5,6-dimethyl-5,6-dimethoxy-1,4-dioxane