2(R)-(4-methanesulfonyl-phenyl)-3-cyclopentyl-5-bromo-pyrazin-2-yl-propionamide 、
2-甲基-3-丁炔-2-醇 在
bis(triphenylphosphine)palladium(II) dichloride
copper(l) iodide 、
N,N-二异丙基乙胺 作用下,
以
甲苯 为溶剂,
以44%的产率得到3-cyclopentyl-2(R)-(4-methanesulfonyl-phenyl)-N-[5-(3-hydroxy-3-methyl-but-1-ynyl)-pyrazin-2-yl]-propionamide