在此,我们提出了一种简便的四步合成方法,用于合成新型2-芳基取代的7,8-二氢喹啉-6(5 H )-酮作为细胞毒剂。关键步骤是使用苯乙酮衍生的曼尼希盐作为迈克尔受体,与环己烷-1,4-二酮单乙烯缩醛反应,得到1,5-二羰基化合物,用乙酸铵处理,得到7,8-二羰基化合物。二氢喹啉-6(5 H )-酮。针对七种细胞系评估了合成化合物的细胞毒活性。观察数据显示对慢性粒细胞白血病株K-562具有良好的选择性。该合成路线简单,适用于各种含官能团的底物。这些类型的化合物可用作癌症研究和药物发现中的先导化合物。
在此,我们提出了一种简便的四步合成方法,用于合成新型2-芳基取代的7,8-二氢喹啉-6(5 H )-酮作为细胞毒剂。关键步骤是使用苯乙酮衍生的曼尼希盐作为迈克尔受体,与环己烷-1,4-二酮单乙烯缩醛反应,得到1,5-二羰基化合物,用乙酸铵处理,得到7,8-二羰基化合物。二氢喹啉-6(5 H )-酮。针对七种细胞系评估了合成化合物的细胞毒活性。观察数据显示对慢性粒细胞白血病株K-562具有良好的选择性。该合成路线简单,适用于各种含官能团的底物。这些类型的化合物可用作癌症研究和药物发现中的先导化合物。
2-(3-Aryl-3-oxopropen-1-yl)-9-<i>tert</i>-butyl-paullones: A New Antileishmanial Chemotype
作者:Christina Reichwald、Orly Shimony、Ute Dunkel、Nina Sacerdoti-Sierra、Charles L. Jaffe、Conrad Kunick
DOI:10.1021/jm7012166
日期:2008.2.1
A screening program directed to find new agents against Leishmania donovani, the parasite causing visceral leishmaniasis, revealed that paullones attenuate the proliferation of axenic amastigotes. Because these structures were not active in a test system involving infected macrophages, a structure optimization campaign was carried out. Concomitant introduction of an unsaturated side chain into the 2-position and a tert-butyl substituent into the 9-position of the parent scaffold led to compounds inhibiting also parasites dwelling in macrophages. By inclusion of the so elaborated scaffold into a chalcone substructure, the toxicity against uninfected host cells was significantly reduced. For the synthesis of this new compound class, a novel modification of the Heck-type palladium-catalyzed C,C-cross coupling strategy was used, employing a ketone Mannich base as precursor for the alkene reactant. The so-prepared compounds exhibited improved antileishmanial activity both on axenic amastigotes (GI(50) < 1 mu M) as well as on parasites in infected macrophages.