Brønsted acid catalysed eco friendly synthesis of quaternary centred C-3 functionalized oxindole derivatives
作者:Nataraj Poomathi、Ravichandran Balaji、Narayanan Uma Maheswari、Narayanasamy Mathivanan、Paramasivan T. Perumal、Kalpattu K. Balasubramanian、Veluchamy Amutha Barathi、Seeram Ramakrishna
DOI:10.1039/c8nj02276c
日期:——
A facile atom economic and eco friendly protocol for the synthesis of biologically important quaternary centered C-3 functionalized oxindole derivatives, with a novel nucleus, in high yields has been demonstrated by employing 3-hydroxy-2-oxindole, isoxazolone/pyrazolone and environmentally benevolent p-toluene sulphonic acid as a catalyst. The advantages of this protocol are the wide substrate scope
通过使用3-羟基-2-氧吲哚,异恶唑酮/吡唑啉酮和对环境有益的方法,已证明了以高收率合成具有生物学核心的生物学上重要的季中心C-3官能化羟吲哚衍生物的简便,经济,环保的方案。对甲苯磺酸作为催化剂。该方案的优点是广泛的底物范围,实用的简便性,良性溶剂和良好的收率。评价所有合成的化合物的体外抗微生物活性。几种化合物表现出与已建立的标准药物相当的良好活性。此外,化合物3g和3m的抗癌活性已初步证明为使用基于MTT的检测方法,以市售标准药物顺铂为阳性对照,对人肿瘤细胞MCF-7和Hep-2进行体外评估。令人欣慰的是,化合物3g和3m对Hep-2和MCF-7细胞系表现出良好的体外抑制活性。这些结果表明3-吲哚基羟吲哚取代的异恶唑类似物可能是用于进一步生物学筛选的潜在先导化合物。