Coupling to the pyrimido[4,5-<i>b</i>][1,4]oxazine ring system: Synthesis of potential antifolates
作者:Merritt J. Winchester、Lawrence J. Zappone、Charles G. Skinner
DOI:10.1002/jhet.5570180303
日期:1981.5
The ability of 2-amino-4-hydroxy-7H-pyrimido[4,5-b][1,4]oxazine derivatives to inhibit dihydrofolate reductase led to a search for means of synthesizing new side chain substituted analogs of this marginally stable pyrimidooxazine system. A study of the synthesis and use of 6-functionalized pyrimido[4,5-b][1,4]oxazines for coupling side chains was begun and has now revealed methods for coupling p-aminobenzoic
2-氨基-4-羟基-7 H-嘧啶基[4,5- b ] [1,4]恶嗪衍生物抑制二氢叶酸还原酶的能力导致寻找合成这种边际稳定的新侧链取代类似物的方法嘧啶恶嗪系统。开始了对6-官能化嘧啶并[4,5- b ] [1,4]恶嗪偶联侧链的合成和用途的研究,现在已经揭示了将对氨基苯甲酸与2-氨基-4-羟基偶联的方法-6-羧基-7 H-嘧啶基[4,5- b ] [1,4]恶嗪和水解的2-氨基-4-羟基-6-羰基-乙氧基-6,7-二吡啶-5 H-嘧啶基[4 ,5-乙] [1,4]恶嗪。该产品作为潜在的抗叶酸剂值得关注。