tert-butyl (2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(1-(2-(2-oxo-1,8-naphthyridin-1(2H)-yl)ethyl)piperidin-4-yl)carbamate 、 ethyl acetate hydrochloride 在
乙醇 、
乙酸乙酯 、 resultant residue 作用下,
反应 24.0h,
以to obtain 1.2 g of 1-(2-(4-((2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-1,8-naphthyridin-2(1H)-one hydrochloride as a white solid的产率得到1-(2-(4-((2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-1,8-naphthyridin-2(1H)-one hydrochloride