In an effort to develop new antimicrobial agents, a series of chalconederivatives, 3-60, were prepared by Claisen-Schmidt condensation of appropriate acetophenones and 2-furyl methyl ketones with appropriate aromatic aldehydes, furfural, and thiophene-2-carbaldehyde in an aqueous solution of NaOH and EtOH at room temperature. The synthesized compounds were characterized by means of their IR- and NMR-spectral
36 Novel heterocyclic chalcone derivatives were synthesized and tested for their anti‐bacterial activity. Some compounds presented good anti‐microbial activities against Gram‐positive bacteria (including the multidrug‐resistant clinical isolates). This class of compounds presented high potency against Streptococcus mutans, among which the derivatives F2 with an MIC of 2 µg/mL was as active as the standard
A New Lewis Acid System Palladium/TMSCl for Catalytic Aldol Condensation of Aldehydes with Ketones
作者:Yulin Zhu、Yuanjiang Pan
DOI:10.1246/cl.2004.668
日期:2004.6
catalyzed the aldolcondensation reactions of different ketones with aldehydes in the presence of trimethylsilyl chloride (TMSCI). The following reactions were investigated: (1) aromaticaldehydes with cycloalkanones, (2) aromaticaldehydes with aromatic ketones, (3) cycloalkanones with aliphatic aldehydes, and (4) the self-condensation reactions of aliphatic aldehydes and cycloalkanones.
Effect of solvent polarity on the photophysical properties of chalcone derivatives
作者:Rekha Kumari、Anitha Varghese、Louis George、Sudhakar Y. N.
DOI:10.1039/c7ra01705g
日期:——
and (E)-3-(furan-2-yl)-1-(2-hydroxyphenyl)prop-2-en-1-one (FHPO) were recorded in eighteen different solvents with increasing polarities at room temperature. The solvatochromiceffects on absorption and fluorescence spectra have shown bathochromic shifts from non-polar to polar solvents for the reported molecules due to intramolecular charge transfer (ICT) interactions. It has indicated a large difference
Studies of Cytotoxicity Effects, SARS‐CoV‐2 Main Protease Inhibition, and
<i>in Silico</i>
Interactions of Synthetic Chalcones
作者:Octavio L. Guterres Fernandes、Tiago Tizziani、Bibiana P. Dambrós、Natália Ferreira de Sousa、Carime L. Mansur Pontes、Layzon A. L. da Silva、Luiz A. Escorteganha Pollo、Francisco F. de Assis、Marcus T. Scotti、Luciana Scotti、Antonio L. Braga、Mario Steindel、Louis P. Sandjo
DOI:10.1002/cbdv.202201151
日期:2023.3
SARS-CoV-2 mainprotease (Mpro) plays an essential role in proteolysis cleavage that promotes coronavirus replication. Thus, attenuating the activity of this enzyme represents a strategy to develop antiviral agents. We report inhibitory effects against Mpro of 40 syntheticchalcones, and cytotoxicity activities, hemolysis, and in silicointeractions of active compounds. Seven of them bearing a (E)
SARS-CoV-2 主要蛋白酶 (M pro ) 在促进冠状病毒复制的蛋白水解切割中起着重要作用。因此,减弱这种酶的活性代表了开发抗病毒剂的策略。我们报告了 40 种合成查尔酮对 M pro的抑制作用,以及细胞毒性活性、溶血和活性化合物的计算机相互作用。其中七个带有 ( E )-3-(furan-2-yl)-1-arylprop-2-en-1-one 骨架(10、28和35–39 )显示酶抑制,IC 50范围为 13.76和 36.13 μM。除了35和36, 其他活性化合物对 THP-1 和 Vero 细胞系没有细胞毒性高达 150 μM。化合物10和35-39未显示溶血,而28在 150 μM 时具有弱血液毒性。此外,分子对接显示化合物10和 M pro(PDBID 5RG2 和 5RG3)之间的相互作用与 cys145 和 His41 接近,表明存在共价结合。查尔酮与环己硫醇的反应产物表明这种结合可能是迈克尔加成型。