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.
Synthesis and Fungicidal Evaluation of Novel Chalcone-Based Strobilurin Analogues
作者:Pei-Liang Zhao、Chang-Ling Liu、Wei Huang、Ya-Zhou Wang、Guang-Fu Yang
DOI:10.1021/jf071064x
日期:2007.7.1
good in vivo fungicidal activities against Pseudoperoniospora cubensis and Sphaerotheca fuliginea at the dosage of 200 microg mL(-1). Two compounds, (E)-methyl 2-[2-(3-[(E)-3-(2-chlorophenyl)acryloyl]phenoxy}methyl)phenyl]-3-methoxyacrylate (1e) and (E)-methyl 2-[2-(3-[(E)-3-(3-bromophenyl)acryloyl]phenoxy}methyl)phenyl]-3-methoxyacrylate (1l), were found to display higher fungicidal activities against
Cytotoxic Activities of Mannich Bases of Chalcones and Related Compounds
作者:Jonathan R. Dimmock、N. Murthi Kandepu、Mark Hetherington、J. Wilson Quail、Uma Pugazhenthi、Athena M. Sudom、Mahmood Chamankhah、Patricia Rose、Eric Pass、Theresa M. Allen、Sarah Halleran、Jen Szydlowski、Bulent Mutus、Marie Tannous、Elias K. Manavathu、Timothy G. Myers、Erik De Clercq、Jan Balzarini
DOI:10.1021/jm970432t
日期:1998.3.1
certain groups of compounds was similar. For some groups of compounds, cytotoxicity was correlated with the sigma, pi, or molar refractivity constants in the aryl ring attached to the olefinic group. In addition, the IC50 values in all three screens correlated with the redox potentials of a number of Mannichbases. X-ray crystallography and molecular modeling of representative compounds revealed various
Mild and Efficient Reductive Deoxygenation of Epoxides to Olefins with Tin(II) Chloride/Sodium Iodide as a Novel Reagent
作者:Naseem Ahmed、Gulab Pathe
DOI:10.1055/s-0034-1378821
日期:——
times and high yields. A highly efficient and green protocol is reported for the reductive deoxygenation of organic epoxides to olefins usingtin(II) chloride/sodium iodide as a novel reagent. The reaction gives an excellent yield (85–96%) in ethanol under reflux within 2–10 minutes, without affecting other functional groups. The advantages of our method are the use of inexpensive reagents, the eco-friendly
Three series of new homoserine lactone analogs were efficiently synthesized starting from methionine and further evaluated for their antiproliferative activity against different cancer cell lines. Among these compounds, some of the chalcone containing compounds 6a-n showed acceptable antiproliferative activity against prostate cancer cells DU145 and PC-3 with the IC50 values less than 10 μM. Compounds
Biocatalytic green alternative to existing hazardous reaction media: synthesis of chalcone and flavone derivatives <i>via</i> the Claisen–Schmidt reaction at room temperature
作者:Kashyap J. Tamuli、Ranjan K. Sahoo、Manobjyoti Bordoloi
DOI:10.1039/d0nj03839c
日期:——
Hook. F. peel ash (MCPA) are used as catalysts to promote an inexpensive, efficient and eco-friendly carbon–carbon bond forming crossed aldol reaction at room temperature in solvent free conditions. Furthermore, the resulting products were subjected to reactions with these promoters in an oxygen atmosphere and led to the formation of novel flavone derivatives. Moreover, the used catalysts were properly