Synthesis and cytotoxicity of new alkyne derivatives of pentacyclic triterpenoids
作者:E. Yu. Yamansarov、I. V. Saltykova、S. V. Kovalev、R. A. Petrov、D. O. Shkil’、E. I. Seleznev、E. K. Beloglazkina、A. G. Majouga
DOI:10.1007/s11172-019-2496-1
日期:2019.4
Pentacyclic triterpene hydroxy acids were transformed into acetylene-containing derivatives: propargyl esters at the carboxy group and O-(hex-5-ynoyl) derivatives at the hydroxy group. The cytotoxicity of the synthesized compounds was examined against HepG2 and Huh7 hepatocarcinoma cells and PC3 prostate cancer cells. The primary analysis of the structure—activity relationships was performed; glycyrrhetic
A Gold(I) Complex Containing an Oleanolic Acid Derivative as a Potential Anti‐Ovarian‐Cancer Agent by Inhibiting TrxR and Activating ROS‐Mediated ERS
作者:Mianli Bian、Ying Sun、Yuanhao Liu、Zhongren Xu、Rong Fan、Ziwen Liu、Wukun Liu
DOI:10.1002/chem.202000045
日期:2020.6.2
vulnerable to further oxidative impairment triggered by agents generating reactive oxygen species (ROS). Therefore, the classical design and development of inhibitors that target antioxidant defense enzymes such as thioredoxin reductase (TrxR) can be a promising anticancer strategy. Herein, it is shown that a gold(I) complex containing an oleanolic acid derivative (4 b ) induces apoptosis of ovarian cancer
Silaborative Assembly of Allenamides and Alkynes: Highly Regio‐ and Stereocontrolled Access to Bi‐ or Trimetallic Skipped Dienes
作者:Tapas R. Pradhan、Mukti Paudel、Taisiia Feoktistova、Paul Ha‐Yeon Cheong、Jin Kyoon Park
DOI:10.1002/anie.202116154
日期:2022.4.19
A highly stereo- and regiocontrolled reaction between allenamides, alkynes, and a bis-metallative reagent (Me2PhSiBpin and Et3SiBpin) is reported for the first time. This new method for accessing functionalized 1,4-dienes under phosphine-free palladium catalysis has good functional group compatibility as showcased through late-stage diversification. By virtue of computational calculations and experimental
首次报道了丙二酰胺、炔烃和双金属试剂(Me 2 PhSiBpin 和 Et 3 SiBpin)之间的高度立体和区域控制反应。这种在无膦钯催化下获得功能化 1,4-二烯的新方法具有良好的官能团兼容性,如后期多样化所示。凭借计算计算和实验证据,证实了区域和立体化学洞察力。
Design and synthesis of novel glycyrrhetinic acid-triazole derivatives that exert anti-plasmodial activity inducing mitochondrial-dependent apoptosis in <i>Plasmodium falciparum</i>
作者:Deepak Singh Kapkoti、Saurabh Kumar、Ashish Kumar、Mahendra P. Darokar、Anirban Pal、Rajendra Singh Bhakuni
DOI:10.1039/d2nj05302k
日期:——
efficacy. Therefore, in the present study, a click chemistry approach was used to design and synthesize glycyrrhetinic acid-triazole derivatives and determine their antiplasmodial activity against a chloroquine-sensitive (NF-54) strain of P. falciparum. Among the sixteen glycyrrhetinicacidderivatives, compound-17 was found to be the most active against the chloroquine-sensitive (NF-54) strain of P. falciparum
liver diseases caused by hepatitis B virus (HBV) are the accepted main cause leading to liver cirrhosis, hepatic fibrosis, and hepatic carcinoma. Sodium taurocholate cotransporting polypeptide (NTCP), a specific membrane receptor of hepatocytes for triggering HBV infection, is a promising target against HBVentry. In this study, pentacyclictriterpenoids (PTs) including glycyrrhetinic acid (GA), oleanolic