[4-(1-pyrazin-2-yl-ethylamino)-butyl]-carbamic acid tert-butyl ester 、
3-甲基-2-吡啶醛 、
三乙酰氧基硼氢化钠 以
二氯甲烷 为溶剂,
以gave {4-[(3-methyl-pyridin-2-ylmethyl)-(1-pyrazin-2-yl-ethyl)-amino]-butyl}-carbamic acid tert-butyl ester (229 m, 63%) as an oil的产率得到{4-[(3-methyl-pyridin-2-ylmethyl)-(1-pyrazin-2-yl-ethyl)-amino]-butyl}-carbamic acid tert-butyl ester