Synthesis of Novel Ethyl 1-aryl-3-methyl-8-oxo-1,8-dihydropyrano[2′,3′:4,5] Pyrimido[6,1-b]Quinazoline-2-carboxylate Derivatives
作者:Qiu-Zhong Shi、Yong-Nan Cao、Shi-Bing Ma、Guo-Xi Wang、Guang-Fan Han、Zheng Xing
DOI:10.3184/174751916x14798109099372
日期:2016.12
1-aryl-3-methyl-8-oxo-1,8-dihydropyrano[2′,3′:4,5]pyrimido[6,1-b]quinazoline-2-carboxylate derivatives was synthesised by the cyclisation of methyl anthranilate with ethyl 5-cyano-6-[(ethoxymethylene)amino]-2-methyl-4-aryl-4H-pyran-3-carboxylate derivatives, which were obtained from reaction of triethyl orthoformate with 6-amino-5-cyano-2-methyl-4-aryl-4H- pyran-3-carboxylate derivatives. The title compounds possessed
本文介绍了新系列的1-芳基-3-甲基-8-氧代-1,8-二氢吡喃[2',3':4,5]嘧啶基[6,1-b]喹唑啉-2-羧酸乙酯衍生物是通过邻氨基苯甲酸甲酯与 5-氰基-6-[(乙氧基亚甲基)氨基]-2-甲基-4-芳基-4H-吡喃-3-羧酸乙酯衍生物环化合成的,该衍生物是由原甲酸三乙酯与6-氨基-5-氰基-2-甲基-4-芳基-4H-吡喃-3-羧酸衍生物。标题化合物具有良好的荧光特性。此外,5-氰基-6-[(乙氧基亚甲基)氨基]-2-甲基-4-(对甲苯基)-4H-吡喃-3-羧酸乙酯和3-甲基-8-氧代-1-(p -tolyl)-1,8-dihydropyrano[2',3':4,5]pyrimido[6,1-b] quinazoline-2-carboxylate 通过单晶 X 射线衍射分析进一步确定。