Antiproliferative and antioxidative effects of novel hydrazone derivatives bearing coumarin and chromene moiety
作者:Violina T. Angelova、Nikolay G. Vassilev、Boryana Nikolova-Mladenova、Jasmina Vitas、Radomir Malbaša、Georgi Momekov、Mirjana Djukic、Luciano Saso
DOI:10.1007/s00044-016-1661-4
日期:2016.9
by Fourier transform-infrared spectroscopy, nuclear magnetic resonance, mass spectrometry, and elemental analysis. The nuclear magnetic resonance spectra of the hydrazones 4a–c showed exchange of syn and antiperiplanar conformers around the amide bond, the more stable being the antiperiplanar one. The nuclear Overhauser effect spectroscopy (NOESY) spectra confirm E configuration around C=N bond. The
合成了一系列具有片段的新杂化分子,并通过傅里叶变换红外光谱,核磁共振,质谱和元素分析对其进行了表征。该腙的核磁共振谱图4A-C显示了交换顺式和antiperiplanar围绕酰胺键,更稳定的是所述构象antiperiplanar之一。核Overhauser效应光谱(NOESY)光谱证实EC = N键周围的构型。被测化合物在微摩尔范围内对人肿瘤细胞系表现出浓度依赖性的细胞毒性作用(MTT(3-(4,5-二甲基噻唑-2-基)-2,5-二苯基溴化四唑鎓四唑还原法))。dra 4a被证明是该系列中最有效的抗增殖剂。在抗氧化剂筛选中,8b表现出最高的自由基清除活性(%RSA max)和与2,2-二苯基-1-吡啶甲基肼基反应的最大速率常数。