2-bromo-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine 、
六甲基二锡 、
(3S,5S)-3-(5-bromo-2-methylsulfanyl-pyrimidin-4-ylamino)-5-methyl-piperidine-1-carboxylic acid benzyl ester 在
钯 、
四(三苯基膦)钯 作用下,
以
甲苯 为溶剂,
以(3S,5S)-3-methyl-5-{2-methylsulfany-l-5-[5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-pyrimidin-4-ylamino}-piperidine-1-carboxylic acid benzyl ester (660 mg, 35%) could be isolated as an oil的产率得到(3S,5S)-3-methyl-5-{2-methylsulfanyl-5-[5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-pyrimidin-4-ylamino}-piperidine-1-carboxylic acid benzyl ester