derivatives of 5-phenyl-5H-imidazo[1,2-a][3,1]benzothiazine-2-carboxylic acid, ethyl ester (4), imidazo[2,1-c][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester (5) and 4H-imidazo[2,3-c]pyrido-[2,3-e][1,4]oxazine (6) were prepared.
从容易获得的2-
氨基苯甲
酚(7),3-
氨基-
1,2,4-苯并三嗪(11)和
2-氨基-3-吡啶醇(12)开始,是5-苯基-5 H-
咪唑的新型衍
生物[ 1,2- a ] [3,1]苯并
噻嗪-2-
羧酸乙酯(4),
咪唑并[ 2,1- c ] [1,2,4]苯并三嗪-2-
羧酸乙酯(5)和4 H-
咪唑并[2,3 - c ]
吡啶基-[2,3- e ] [1,4]恶嗪(6)。