Synthesis and antifolate activity of 2,4-diamino-5,6,7,8-tetrahydropyrido[4,3-<i>d</i>]pyrimidine analogues of trimetrexate and piritrexim
作者:Andre Rosowsky、Clara E. Mota、Sherry F. Queener
DOI:10.1002/jhet.5570320155
日期:1995.1
compound and appropriate aralkyl bromides in N,N-dimethylformamide solution containing a catalytic amount of sodium iodide. An improved method of preparation of 2,4-diamino-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine from 2-amino-6-benzyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one was also developed, in which N2 was protected by reaction with pivalic anhydride and the resulting product was subjected
由N 6-未取代的化合物和适当的芳烷基溴化物在N中合成2,4-二氨基5,6,7,8-四氢吡啶并[4,3- d ]嘧啶在6位上被二和三甲氧基芳烷基取代。含有催化量碘化钠的N-二甲基甲酰胺溶液。一种由2-氨基-6-苄基-5,6,7,8-四氢吡啶并[4,]制备2,4-二氨基-5,6,7,8-四氢吡啶并[4,3- d ]嘧啶的改进方法。还开发了3- d ]嘧啶-4(3 H)-one,其中N 2通过与新戊酸酐的反应来保护N 2,然后使所得产物连续与4-氯苯基二氯二氯膦酸酯和1,2,4-三唑反应,进行氨解反应以取代4-咪唑并基并除去N 2-新戊酰基,并进行催化氢解。除去6-苄基。在产品抑制卡氏肺孢子虫,弓形虫和大鼠肝中二氢叶酸还原酶能力的测定中,所测试化合物中活性最高的是2,4-二氨基-6-(2'-bromo-3',4' ,5'-三甲氧基苄基)-5,6,7,8-四氢吡啶并[4,3- d ]嘧啶。由50%需要抑制酶活性,该化合物的浓度为0