A novel synthesis of N1-(substituted)-pyrimido[5,4-e]-1,2,4-triazine-5,7(1H,6H)-diones
作者:Anjanette J. Turbiak、H.D. Hollis Showalter
DOI:10.1016/j.tetlet.2009.02.084
日期:2009.4
A new synthesis of N1-(substituted)-pyrimido[5,4-e]-1,2,4-triazine-5,7(1H,6H)-diones, which are analogues of the natural product toxoflavin, is reported. Condensation of preformed alkyl or aryl hydrazones with 6-chloro-3-methyl-5-nitrouracil efficiently provides pyrimidotriazinediones in a three-step process that broadens the scope of R1 substituents.
N 1 -(取代)-嘧啶基[5,4- e ]-1,2,4-三嗪-5,7(1 H ,6 H ) -二酮的新合成,它们是天然产物毒素黄素的类似物,被报道。预先形成的烷基或芳基腙与 6-氯-3-甲基-5-硝基尿嘧啶的缩合可通过三步法有效地提供嘧啶并三嗪二酮,从而拓宽了 R 1取代基的范围。