1-[(6-methyl-2-pyridinyl)methyl]-2H-pyrido[2,3-d][1,3]oxazine-2,4(1H)-dione 、
N-butyl-3-azaisatoic anhydride 生成 3-(1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-1-[(6-methyl-2-pyridinyl)methyl]-1,8-naphthyridin-2(1H)-one 、 1-butyl-3-(1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-1,8-naphthyridin-2(1H)-one