Synthesis, antiviral activity, 3D-QSAR, and interaction mechanisms study of novel malonate derivatives containing quinazolin-4(3H)-one moiety
摘要:
A series of novel malonate derivatives containing quinazolin-4(3H)-one moiety were synthesized and evaluated for their antiviral activities against cucumber mosaic virus (CMV). Results indicated that the title compounds exhibited good antiviral activities. Notably, compounds g15, g16, g17, and g18 exhibited excellent curative activities in vivo against CMV, with 50% effective concentration (EC50) values of 208.36, 153.78, 181.47, and 164.72 mu g/mL, respectively, which were better than that of Ningnanmycin (256.35 mu g/mL) and Ribavirin (523.34 mu g/mL). Moreover, statistically valid three-dimensional quantitative structure-activity relationship (3D-QSAR) models with good correlation and predictive power were obtained with comparative molecular field analysis (CoMFA) steric and electrostatic fields (r(2) = 0.990, q(2) = 0.577) and comparative molecular similarity indices analysis (CoMSIA) with combined steric, electrostatic, hydrophobic and hydrogen bond acceptor fields (r(2) = 0.977, q(2) = 0.516), respectively. Based on those models, compound g25 was designed, synthesized, and showed better curative activity (146.30 mu g/mL) than that of compound g16. The interaction of between cucumber mosaic virus coat protein (CMV CP) and g25 with 1:1.83 ratio is typically spontaneous and exothermic with micromole binding affinity by isothermal titration calorimetry (ITC) and fluorescence spectroscopy investigation. (C) 2015 Elsevier Ltd. All rights reserved.
Co(II) and Fe(II) phthalocyanines have been successfully prepared and their structural characterization have been done using with different spectroscopic methods (IR, 1H-NMR, UV–Vis, mass spectroscopies and elemental analysis). Substituted phenolic compounds as substrate, different kinds of oxidants and novel Co(II) and Fe(II) phthalocyanines as catalyst have been used in all oxidation reactions. Temperature
Anti-Tumor Activity of New Artemisinin-Chalcone Hybrids
作者:Lijun Xie、Xin Zhai、Chun Liu、Peng Li、Yangxiong Li、Guoxian Guo、Ping Gong
DOI:10.1002/ardp.201000391
日期:2011.10
develop potent and selective anti‐tumor agents, three new series of artemisinin–chalconehybrids 10a–10g, 11a–11g and 12a–12h were designed, synthesized and screened for their anti‐tumor activity against five cell lines (HT‐29, A549, MDA‐MB‐231, HeLa and H460) in vitro. Among compounds 10a–g and 11a–11g, most of them displayed enhanced activity and good selectivity toward HT‐29 and HeLa cell lines
Enhanced photo-ablation effect of positively charged phthalocyanines-detonation nanodiamonds nanoplatforms for the suppression of Staphylococcus aureus and Escherichia coli planktonic cells and biofilms
作者:Yolande Ikala Openda、Tebello Nyokong
DOI:10.1016/j.jphotochem.2021.113200
日期:2021.4
charged chalcone substituted zinc (3a) and indium (4a) metalated phthalocyanines (Pcs) were synthesized and were π-π interacted with detonation nanodiamonds (DNDs) nanoparticles to form new water soluble nanoplatfoms 3a@DNDs and 4a@DNDs. The conjugates generated high singlet oxygen quantum yields (ΦΔ) in water (1% DMSO, used for PACT studies) with values of 0.46 and 0.47 for 3a@DNDs and 4a@DNDs, respectively
AbstractA series of novel chalcone derivatives containing a benzothiazole scaffold were synthesized to develop novelantibacterial agents for solving the problem of drug resistance. Most compounds exhibited excellent antibacterial activity against Xanthomonas oryzae pv. Oryzae (Xoo), Xanthomonas axonopodis pv. Citri (Xac), and Ralstonia solanacearum (Rs) compared to a reference drug, bismerthiazol
Stilbenes and chalcones for the prevention and treatment of cardiovascular diseases
申请人:Wong C.W. Norman
公开号:US20060205792A1
公开(公告)日:2006-09-14
The present disclosure provides non-naturally occurring polyphenol compounds that upregulate the expression of Apolipoprotein A-I (ApoA-I). The disclosed compositions and methods can be used for treatment and prevention of cardiovascular disease and related disease states, including cholesterol or lipid related disorders, such as, e.g., atherosclerosis.