A novel and efficient method has been developed for the chemoselective conjugate reduction of α,β-unsaturatedketones with tosylhydrazine as a hydrogen source to the corresponding saturatedketones in moderate to good yields. The present protocol does not require the use of transitionmetal, and is efficient being applicable to a wide range of substrates (25 examples).
18 µM). The anticancer activity of potent derivatives (3b and 3d) against A549 cancer cell line was further confirmed by flow cytometry based approach. DNAbinding interactions of the pyrazoline derivatives 3b and 3d have been carried out with calf thymus DNA (Ct-DNA) using absorption, fluorescence and viscosity measurements, circular dichroism and cyclic voltammetry. Antioxidant potential of N-formyl
isolate as well. In silico analysis of ADMET properties showed that the evaluated chalcones displayed satisfactory pharmacokinetic parameters. In conclusion, the obtained data demonstrate that at least two of the studied chalcones, compounds 4 and 5, are promising antimycobacterial and anti-inflammatory agents, especially focusing on an anti-tuberculosis dual treatment approach.
Ligand-Free Nickel-Catalysed 1,4-Addition of Arylboronic Acids to α,β-Unsaturated Carbonyl Compounds
作者:Wen Chen、Lu Sun、Xi Huang、Jiayi Wang、Yanqing Peng、Gonghua Song
DOI:10.1002/adsc.201400761
日期:2015.5.4
catalytic system has been developed for the 1,4‐addition of arylboronic acids to α,β‐unsaturatedcarbonylcompounds. With catalyst loadings of 1–2 mol%, a series of 1,4‐adducts from chalcones and cinnamates was obtained in moderate to excellent yields within 5–30 min under a nitrogen atmosphere and microwave irradiation. The 1,4‐addition of arylboronic acids to acrylates is less efficient.
Characterization of the Fluorescence Properties of 4-Dialkylaminochalcones and Investigation of the Cytotoxic Mechanism of Chalcones
作者:Bo Zhou、Peixin Jiang、Junxuan Lu、Chengguo Xing
DOI:10.1002/ardp.201500434
日期:2016.7
structure–activity relationship in their cellular cytotoxicity, leading to the identification of structurally similar cytotoxic and non‐cytotoxic fluorescent chalcones as chemical probes. Confocal microscopy results revealed the co‐localization of the cytotoxic probe C8 and tubulin in cells, supporting tubulin as the direct cellular target responsible for the cytotoxicity of chalcones.