2-氨基喹喔啉 、 3-溴丙酮酸乙酯 以
乙二醇二甲醚 为溶剂,
反应 16.0h,
以to obtain 1.58 g of 2-amino-carbethoxycarbonylmethyl-quinoxalinium bromide in the form of a pale yellow crystalline solid的产率得到1-carbethoxy-carbonylmethyl-2-amino-quinoxalinium bromide
参考文献:
名称:
Imidazo[2,1-C]quinolines, useful as antiallergic agents
Substituted imidazo 1,2-a-quinoxaline-4-(5H)ones, their compositions and
申请人:Roussel Uclaf
公开号:US04474784A1
公开(公告)日:1984-10-02
Novel compounds of the formula ##STR1## wherein A is selected from the group consisting of nitrogen and .dbd.CH--, G is selected from the group consisting of --0--, ##STR2## Z is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms or taken with Y forms a carbon-nitrogen or carbon-carbon bond, Z' is selected from the group consisting of hydrogen and halogen, Y is hydrogen, or taken with Z is a carbon-nitrogen or carbon-carbon bond or taken with X is .dbd.0 and X is hydrogen or taken with Y is .dbd.0, R is selected from the group consisting of hydroxymethyl, formyl, tetrazol-5-yl, N-(tetrazol-5-yl) carbamoyl, aminomethyl and carbamoyl, R.sub.1 is selected from the group consisting of hydrogen, halogen and alkoxy of 1 to 5 carbon atoms and its non-toxic, pharmaceutically acceptable acid addition salts having anti-allergic activity and their preparation.
Novel compounds of the formula ##STR1## wherein A is selected from the group consisting of nitrogen and .dbd.CH--, G is selected from the group consisting of ##STR2## Z is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms or taken with Y forms a carbon-nitrogen or carbon-carbon bond, Z' is selected from the group consisting of hydrogen and halogen, Y is hydrogen, or taken with Z is a carbon-nitrogen or carbon-carbon bond or taken with X is .dbd.O and X is hydrogen or taken with Y is .dbd.O, R is selected from the group consisting of hydroxymethyl, formyl, tetrazol-5-yl, N-(tetrazol-5-yl) carbamoyl, aminomethyl and carbamoyl, R.sub.1 is selected from the group consisting of hydrogen, halogen and alkoxy of 1 to 5 carbon atoms and its non-toxic, pharmaceutically acceptable acid addition salts having antiallergic activity and their preparation.