2-氯-5,6,7,8-四氢-6-(苯基甲基)-1,6-萘啶 、
(3R)-3-ethylmorpholine p-toluenesulfonate 以2-[(3R)-3-ethylmorpholin-4-yl]-5,6,7,8-tetrahydro-1,6-naphthyridine hydrochloride (0.177 g, 33%) was obtained as a yellow powder的产率得到2-[(3R)-3-ethylmorpholin-4-yl]-5,6,7,8-tetrahydro-1,6-naphthyridine hydrochloride