Turbiak Anjanette J, Showalter H D Hollis
Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109-1065, USA.
Tetrahedron Lett. 2009 Apr 29;50(17):1996-1997. doi: 10.1016/j.tetlet.2009.02.084.
A new synthesis of N(1)-(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 R(1) substituents.
据报道,一种新的N(1)-(取代)-嘧啶并[5,4-e]-1,2,4-三嗪-5,7(1H,6H)-二酮的合成方法,该化合物是天然产物毒黄素的类似物。预制的烷基或芳基腙与6-氯-3-甲基-5-硝基尿嘧啶缩合,通过三步反应有效地得到嘧啶并三嗪二酮,拓宽了R(1)取代基的范围。