制备了一系列咪唑并[1,5- a ]吡嗪的羟吲哚衍生物,并通过1 H NMR,质量和HRMS数据证实。评估了这些化合物对一组来自52种人类肿瘤细胞系的抗癌活性,这些细胞系来自9种不同的癌症类型:白血病,肺癌,结肠癌,中枢神经系统,黑色素瘤,卵巢癌,肾癌,前列腺癌和乳腺癌。其中化合物7l显示出显着的抗癌活性,GI 50值为1.54至13.0μM。用6.5μM(IC 50)浓度的化合物7l处理A549细胞后,在G0 / G1期观察到细胞周期停滞并诱导凋亡。膜联蛋白V-FITC以及DNA片段分析证实了这一点,有趣的是该化合物(7l)不影响正常细胞。
Synthesis of (Z)-3-(arylamino)-1-(3-phenylimidazo[1,5-a]pyridin-1-yl)prop-2-en-1-ones as potential cytotoxic agents
作者:Geeta Sai Mani、Pratibha Anchi、Satish Sunkari、Kavitha Donthiboina、Chandraiah Godugu、Nagula Shankaraiah、Ahmed Kamal
DOI:10.1016/j.bmcl.2020.127432
日期:2020.9
The new derivatives based on (Z)-3-(arylamino)-1-(3-phenylimidazo[1,5-a]pyridin-1-yl)prop-2-en-1-one scaffold was synthesized and evaluated for their in vitro cytotoxic potential against a panel of cancercelllines, viz., A549 (human lung cancer), HCT-116 (human colorectalcancer), B16F10 (murine melanoma cancer), BT-474 (human breast cancer), and MDA-MB-231 (human triple-negative breast cancer). Among
results revealed that among all the hybrids, two (5k and 5r) were identified and exhibited significant cytotoxic effect against A549 cancer cells with IC50 values of 1.65 ± 0.3 and 1.80 ± 0.8 µM respectively. To investigate the reasons for the cytotoxic activity, the conventional biological assays were carried out with 5k and 5r on the A549 cancer cells. Both hybrids led to the arrest of A549 cell lines
3,4-tetrahydroxanthylium heterocyclic system displaying absorption within the near-infrared were synthesized. The photochemical behaviour of these molecules was evaluated in dichloromethane, regarding their ground state absorption properties, fluorescence emission quantum yields and fluorescence lifetimes determinations. The singlet oxygen quantum yields of the new dyes were also obtained. The absorption
Imidazo[1,2-a]pyridine and Imidazo[1,5-a]pyridine: Electron Donor Groups in the Design of D–π–A Dyes
作者:Léa Valla、Delphine Pitrat、Jean-Christophe Mulatier、Tangui Le Bahers、Erwann Jeanneau、Lamiaa M. A. Ali、Christophe Nguyen、Magali Gary-Bobo、Chantal Andraud、Yann Bretonnière
DOI:10.1021/acs.joc.4c00232
日期:2024.6.21
< IIIb < IVb) and (IIa < Ia < IIIa < IVa) underscores the stronger electron-donor character of imidazo[1,5-a]pyridine compared to that of imidazo[1,2-a]pyridine. Furthermore, crystalline powders of imidazo[1,2-a]pyridine derivatives exhibited fluorescence despite minimal emission in solution. Two compounds (Ib and IVa) were successfully formulated into nanoparticles for potential in vivo imaging applications
这项工作研究了两个10-π电子氮桥头双环[5,6]稠环系统、咪唑并[1,2- a ]吡啶和咪唑并[1,5- a ]吡啶环的给电子能力。合成并研究了八种具有不同位置的吸电子部分(TCF 或 DCI)与咪唑并吡啶环偶联的化合物。含 DCI 的化合物 ( Ib – IVb ) 表现出纯偶极性质,具有宽吸收带、弱荧光、大斯托克斯位移和强溶剂化显色现象。相比之下,含 TCF 的化合物 ( Ia – IVa ) 表现出多种特性。咪唑并[1,2- a ]吡啶衍生物Ia和IIa是纯偶极的,而咪唑并[1,5- a ]吡啶衍生物IIIa和IVa表现出类似花青的特性,具有强烈的吸收和更高的发射量子产率。随着电子给体基团 ( IIb < Ib < IIIb < IVb ) 和 ( IIa < Ia < IIIa < IVa ) 的变化,观察到光学性质逐渐红移,强调了咪唑并[1,5- a ]吡啶更强的电子给体特性与咪唑并[1