[(2R,3R)-3-ethynyl-2-[(4-methoxyphenyl)methoxymethoxy]-6-triethylsilyl-3-triethylsilyloxyhex-5-ynyl] (3R)-3-[5-[[(5R,6R,7S)-6-[tert-butyl(dimethyl)silyl]oxy-9-iodo-2,2-dimethyl-1,3-dioxaspiro[4.4]non-8-en-7-yl]oxy]-6-chloropyridin-2-yl]-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoate 在
tris(dibenzylideneacetone)dipalladium(0) chloroform complex copper(l) iodide 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.5h,
以45%的产率得到tert-butyl N-[(3'S,4R,4'R,9'R,10'R,15'R)-4'-[tert-butyl(dimethyl)silyl]oxy-18'-chloro-10'-[(4-methoxyphenyl)methoxymethoxy]-2,2-dimethyl-13'-oxo-9'-triethylsilyloxy-9'-(3-triethylsilylprop-2-ynyl)spiro[1,3-dioxolane-4,5'-2,12-dioxa-17-azatricyclo[14.2.2.13,6]henicosa-1(18),6(21),16,19-tetraen-7-yne]-15'-yl]carbamate