1,2,4 Benzothiadiazine 1,1-dioxide. V: 1 synthesis of built-in hydroxuguanidine tricycles as potential anticancer agents
作者:Ji-Wang Chern、Jiann-Gwo Rong
DOI:10.1016/0040-4039(91)80654-o
日期:1991.6
Two representative built in hydroxyguanidine tricycles, 10-N-hydroxy-2,3-dihydroimidazol [1,2-][1,2,4]benzothiadiazine 5,5-dioxide (a) and 11-N-hydroxy-2,3-dihydro-4H-pyrimido-[l,2-c] [l,2,4]benzothiadiazine 6,6-dioxide (b), were obtained in 78% and 30% yields, respectively by a treatment of 1-(2-nitrobenzenesulfonyl)-2-benzylthio-2-imidazolidine and -4,5-dihydro-6H-pyrimidine with zinc in acetic acid
Studies on 1,2,4-Benzothiadiazine 1,1-Dioxides VII and Quinazolinones IV: Synthesis of Novel Built-In Hydroxyguanidine Tricycles as Potential Anticancer Agents
作者:Ji-Wang Chern、Yen-Chywan Liaw、Chien-Shu Chen、Jiann-Gwo Rong、Chien-Lin Huang、Chao-Han Chan、Andrew H.-J. Wang
DOI:10.3987/com-92-6285
日期:——
Two representative built-in hydroxyguanidine tricycles containing 1,2,4-benzothiadiazine 1,1-dioxides (3) and quinazolinones (4) were prepared by reductive cyclization of 1-(2-nitrophenyl-sulfonyl)-2-benzylthio-2-imidazoline (9a), 1-(2-nitrophenylsulfonyl)-2-benzylthio-1,4,5,6-tetrahydropyrimidine (9b), 1-(2-nitrobenzoyl)-2-benzylthio-2-imidazolidine (10a) and 1-(2-nitrobenzoyl)-2-benzyl-thio-1,4,5,6-tetrahydropyrimidine hydrobromide respectively (10b) with zinc dust in acetic acid under ice-cooling. 2,10-Dihydro-10-hydroxy-3H-imidazo[1,2-b][1,2,4]benzothiadiazine 5,5-dioxide (3a) and 2,3,4,11-tetrahydro-11-hydroxypyrimido[1,2-b][1,2,4]benzothiadiazine 6,6-dioxide (3b) were found to be active against solid tumor cell lines such as KB, Colo 205, HeLa, and Hepa-2.