tert-butyl (2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(1-(2-(2-oxo-1,7-naphthyridin-1(2H)-yl)ethyl)piperidin-4-yl)carbamate 、 ethyl acetate hydrochloride 在
乙醇 、 resultant residue 、
乙酸乙酯 作用下,
反应 21.0h,
以to obtain 0.15 g of 1-(2-(4-((2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-1,7-naphthyridin-2(1H)-one hydrochloride as a yellow solid的产率得到1-(2-(4-((2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-1,7-naphthyridin-2(1H)-one hydrochloride