Synthesis of New Pyrido[4″,3″:4″,5″]thieno[2″,3″:4,5]pyrimido[2,1-b][1,3,4]thiadiazine Derivatives
作者:Essam Kh. Ahmed
DOI:10.1080/10426500210671
日期:2002.4.1
Ethyl 2-methyl-11-oxo-9, 10-dihydro-1 H , 11 H -pyrido[4",3":4',5']thieno[2',3':4,5]pyrimido[2,1-b][1,3,4]thiadiazine-8(7 H )-carboxylate 7 has been synthesised by the reaction of ethyl 3-amino-4-oxo-2-thioxo-1,3,4,5,6,8-hexahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7(2 H )-carboxylate 2 with allylbromide followed by treatment with bromine and subsequent dehydrobromination of the brominated product
乙基 2-methyl-11-oxo-9, 10-dihydro-1 H , 11 H -pyrido[4",3":4',5']thieno[2',3':4,5]pyrimido[2] ,1-b][1,3,4]thiadiaazine-8(7 H )-carboxylate 7 通过乙基 3-amino-4-oxo-2-thioxo-1,3,4,5 的反应合成, 6,8-六氢吡啶并[4',3':4,5]噻吩并[2,3-d]嘧啶-7(2H)-羧酸酯2与烯丙基溴,然后用溴处理,随后用乙醇氢氧化钠。其异构乙基 2-methyl-11-oxo-9,10-dihydro-3 H,11 H -pyrido[4",3Prime;:4',5']thieno[2',3':4,5]pyrimido [2,1-b][1,3,4]噻二嗪-8(7 H )-羧酸酯 8 是通过 2 与氯丙酮缩合,然后中间体 9 与对甲苯磺酸环化获得的。噻二嗪衍生物