Studies in the heterocyclic series. XXI. A novel tetraaza-analog of phenothiazine
作者:Charles O. Okafor、Imaga O. Uche、Leonard E. S. Akpanisi
DOI:10.1002/jhet.5570180820
日期:1981.12
As a continuation of our search for new pharmaco-active phenothiazine compounds, the synthesis of 1,4,6,8-tetraazabenzo[b]phenothiazine ring system is described. Derivatives of this new heterocycle were prepared by converting 4,5-diamino-6-hydroxypyrimidine to 4,5-diaminopyrimidine-6-(1H)thione followed by the action of 2,3-dichloroquinoxaline in refluxing DMF or DMAC. The reaction of mixed nitric
作为我们对新的具有药物活性的吩噻嗪化合物的探索的继续,描述了1,4,6,8-四氮杂苯并[ b ]吩噻嗪环系统的合成。该新杂环的衍生物是通过将4,5-二氨基-6-羟基嘧啶转化为4,5-二氨基嘧啶-6-(1 H)硫酮,然后在回流的DMF或DMAC中作用2,3-二氯喹喔啉来制备的。硝酸和硫酸的混合溶液与9-氨基-12-氯-1,4,6,8-四氮杂苯并[ b ]吩噻嗪的反应生成9-氨基-12-氯-13-硝基-1,4,6,8 -四氮杂苯并[ b ]吩噻嗪5-氧化物,收率令人满意。9-氨基-1,4,6,8-四氮杂苯并[ b ]吩噻嗪的重氮化反应生成1,4,6,8-四氮杂三唑[4,5,1- kl作为新的杂环化合物的]苯并[ b ]吩噻嗪和该环系统的母体化合物。还提出了这些化合物的机理途径。