Designing, synthesis, and characterization of some novel coumarin derivatives as probable anticancer drugs
作者:Darla Mark Manidhar、Rajesh Kumar Kesharwani、N. Bakthavatchala Reddy、C. Suresh Reddy、Krishna Misra
DOI:10.1007/s00044-012-0299-0
日期:2013.9
activity. The chemical syntheses of 4-methyl-7-hydroxycoumarin and its 8-formyl derivative were carried out using Pechmann’s condensation followed by Duffs reaction. Treatment of the 8-formyl derivative with nine different N,N-di substituted cyanoacetamides in the presence of piperidine afforded the corresponding nine new 8-substituted-4-methyl-7-hydroxycoumarin derivatives. These compounds were characterized
香豆素是具有多种医学性质的天然存在的氧杂环,因此用作设计新的有效类似物的先导化合物。基于含有香豆素核的抑制剂与人NAD(P)H:醌氧化还原酶-1和人磷酸二酯酶4B酶的复合物的X射线晶体结构,某些新型香豆素衍生物已被设计为专门用于胰腺癌的抑制剂。这两种酶在各种肿瘤中过表达,前者特别在胰腺癌中表达。通过电子药效团和对接研究进行的计算分析表明,4-甲基-7-羟基香豆素第8位的特定基团具有抗小鼠皮肤癌的抗癌活性,并可以增强抗肿瘤活性。使用Pechmann缩合然后进行Duffs反应进行4-甲基-7-羟基香豆素及其8-甲酰基衍生物的化学合成。用九种不同的方法处理8-甲酰基衍生物在哌啶存在下,N,N-二取代的氰基乙酰胺提供了相应的九种新的8-取代的-4-甲基-7-羟基香豆素衍生物。这些化合物的特征在于IR,1 H,1313 C NMR,质谱和元素分析。有趣的是,分子对接表明九种香豆素衍生物相对于香豆素本