transformation reactions with guanidine. Only after N‐protection (methyl or 2‐(trimethylsilyl)ethoxymethyl group), 2‐desaza analogues of the alkaloid annomontine are accessible via the enaminoketones obtained by condensation with Bredereck's reagent. One of the annomontine analogues is an inhibitor of the Plasmodium falciparum CDC‐like kinases (CLK) and shows antimalarial activity.
1-乙酰
咔唑在用 Bredereck's 试剂处理后很容易转化为 3-desazacanthin-4-ones,但与 canthin-4-ones 相比,它们不会与
胍发生环转化反应。只有在 N-保护(甲基或 2-(三甲基甲
硅烷基)乙氧基甲基)后,才能通过与
Bredereck 试剂缩合获得的烯
氨基酮获得
生物碱胭脂红的 2-脱氮类似物。其中一种胭脂红类似物是恶性疟原虫 CDC 样激酶 (CLK) 的
抑制剂,具有抗疟活性。