A novel three-step synthesis of 3-aryl β-carbolin-1-ones from non-indole starting materials has been developed. The two nitrogen atoms in β-carbolin-1-one were introduced efficiently by Michael addition of ethyl acetamidocyanoacetate to chalcone. The desired pyridone and indole rings were assembled by an intramolecular ketoneânitrile annulation mediated by aqueous HClâHOAc and a Cu(I)-catalyzed intramolecular N-arylation of the amide, respectively. The target compounds were found to possess significant activity against tumor cell proliferaton.
一种新颖的三步合成3-芳基β-卡巴啉-1-酮的方法已经开发。通过将乙酰
氨基
氰基
乙酸乙酯与
查尔酮进行迈克尔加成,高效引入了β-卡巴啉-1-酮中的两个氮原子。所需的
吡啶酮和
吲哚环分别通过
水合
盐酸-
醋酸介导的分子内酮- nitrile环化以及
铜(I)催化的分子内
氨基的N-芳基化组合而成。目标化合物在抑制肿瘤细胞增殖方面显示出显著活性。