Base-Promoted Expedient Access to Spiroisatins: Synthesis and Antitubercular Evaluation of 1H-1,2,3-Triazole-Tethered Spiroisatin–Ferrocene and Isatin–Ferrocene Conjugates
摘要:
The use of sodium hydride provides a convenient access to the synthesis of C-5-functionalized spiroisatins with the absence of the typical drawbacks associated with conventional protocols. The synthesized precursors, viz. N-alkylazido spiroisatins and their unprotected counterparts, were explored in Cu-mediated azide alkyne cycloaddition reactions to probe the antitubercular structure-activity relationships (SAR) within the isatin ferrocene-triazole conjugate family. The antitubercular evaluation studies of the synthesized conjugates revealed an improvement in the minimal inhibitory concentration (MIC) with the introduction of ferrocene nucleus, as evidenced by spiroisatin ferrocene and isatin ferrocene hybrids.
合成了一系列的1 H -1,2,3-三唑连接的二茂铁基-甲氧基-甲基-靛红共轭物,并测定了它们对雌激素反应性和非雌激素反应性细胞系的抗增殖活性。非细胞毒性缀合物7l具有最佳的辛基链间隔基和在isatin的C-5位置的甲基取代基的最佳组合,被证明是很有前途的产品,相对于MCF-7和IC.79 ,IC 50值分别为14.62μM和79.63μM分别针对MDA-MB-231细胞。通过对雌激素受体亚型α和β进行的对接研究进一步证实了所观察到的活性缀合物的抗增殖活性。