Base-Promoted Expedient Access to Spiroisatins: Synthesis and Antitubercular Evaluation of 1<i>H</i>-1,2,3-Triazole-Tethered Spiroisatin–Ferrocene and Isatin–Ferrocene Conjugates
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.
Design, synthesis, anti-proliferative evaluation and docking studies of 1<i>H</i>-1,2,3-triazole tethered ospemifene–isatin conjugates as selective estrogen receptor modulators
A library of 1H-1,2,3-triazole-tethered ospemifene–isatin and ospemifene–spiroisatin conjugates have been synthesized and evaluated for their anti-proliferative activities against MCF-7 and MDA-MB-231 cell lines. The evaluation studies revealed that compound 11j was the most potent with an IC50 value of 1.56 μM against the MCF-7 cell line. Compounds 11k and 11l also displayed a similar trend, with
已合成了1 H -1,2,3-三唑系泊的欧司哌米芬-伊斯汀和欧司哌米芬-螺旋素共轭物的文库,并评估了它们对MCF-7和MDA-MB-231细胞系的抗增殖活性。评估研究表明,化合物11j对MCF-7细胞系的作用最强,IC 50值为1.56μM。化合物11k和11lER +细胞的有效浓度也比ER-细胞低几倍。SAR研究表明,在以乙基/丙基为间隔基的靛蓝环的C-5和C-7位上具有溴取代基的缀合物具有活性,最有效的化合物比他莫昔芬的效价高约30倍。 MCF-7细胞系。评估结果得到对接研究的进一步支持,合成缀合物的较强结合亲和力归因于其更大的结构体积和对ERα活性位点的更大占有。