2,2,5,5-tetramethyl-3-pyrroline-1-oxyl-3-acetylene 、
N-Boc-3-碘-L-酪氨酸甲酯 在
bis-triphenylphosphine-palladium(II) chloride
copper(l) iodide 、
三乙胺 作用下,
反应 5.0h,
以39%的产率得到(S)-2-tert-butoxycarbonylamino-3-[4-hydroxy-3-(1-ylooxy-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-ylethynyl)phenyl]propionic acid methyl ester