碳-碳三键的水合是一种重要的原子经济合成转化。在此,我们报告了一种温和且选择性的催化马尔科夫尼科夫水合 ( E )-芳基烯炔生成相应烯酮的方法,该方法通过稳定的铵盐三(4-溴苯基)六氯锑酸铵 (TBPA) 介导。化学选择性和非对映选择性方法在中性无金属条件下进行,从末端和内部炔烃单元提供出色的产品收率。生物学上重要的 ( E )-3-苯乙烯基异香豆素的合成,包括天然产物 achlisocoumarin III 的正式合成,证明了这种新型转化的效用。
Design, synthesis, antiviral activity, and mechanisms of novel ferulic acid derivatives containing amide moiety
作者:Ting Yuan、Zhengxing Wang、Shichao Lan、Xiuhai Gan
DOI:10.1016/j.bioorg.2022.106054
日期:2022.11
To explore the novel compounds with high antiviralactivity, three series ferulic acid derivatives containing amide moiety were gradually designed and synthesized based on antiviralactivity tracking. The bioassay results exhibited that some target compounds had notable antiviralactivities against tomato spotted wilt virus (TSWV) and cucumber mosaic virus (CMV). Compounds Y1, Y2, Y8, Z1 and Z2 presented
Novel Vanillin‐based hybrids inhibit quorum sensing and silences phenotypical expressions in
<i>Pseudomonas aeruginosa</i>
作者:Tamanna Dua、Surabhi Mangal、Goel Akshita、Harshdeep、Ankit K. Atri、Purshotam Sharma、Kusum Harjai、Vasundhara Singh
DOI:10.1002/ddr.22011
日期:2023.2
phytochemicals- Zingerone (Z), Eugenol (E), Guaiacol (G), Cinnamaldehyde (C), and Ferulic acid (F) to form the hybrids named as VTZ (1), VTE (2), VTG (3), VTC (4), and VTF (5), respectively. Molecular docking studies revealed the strong binding affinity of the designed hybrids with quorum-sensing receptors (LasR, Rh1R, and PqsR). The synthesized hybrids were also evaluated for anti-quorum sensing activities to examine
Provided herein are anti-fibrotic compounds, in particular those of Formula (I), that inhibit the TGF-beta signaling pathway. Also provided are pharmaceutical compositions comprising the anti-fibrotic compounds, and methods of treating diseases or conditions associated with fibrosis, inflammation, and benign or malignant neoplastic diseases in a subject by administering a compound or composition described herein. (Formula (I))
Synthesis, QSAR and anticandidal evaluation of 1,2,3-triazoles derived from naturally bioactive scaffolds
作者:Mohammad Irfan、Babita Aneja、Umesh Yadava、Shabana I. Khan、Nikhat Manzoor、Constantin G. Daniliuc、Mohammad Abid
DOI:10.1016/j.ejmech.2015.02.007
日期:2015.3
In the present study, we used eight natural precursors (1a-h) with most of them having promising antimicrobial activities and synthesised their novel 1,2,3-triazole derivatives (3a-h). In the reaction sequences, the precursor compounds (1a-h) were converted to their respective alkyne (2a-h) followed by addition of benzyl azide freshly prepared by the reaction of benzyl bromide with sodium azide using [3 + 2] azide-alkyne cycloaddition strategy. Structural elucidation of all the triazole derivatives was done using FT-IR, H-1, C-13 NMR, mass and elemental analysis techniques. The single crystal X-ray diffraction for 3d was also recorded. The result of in vitro anticandidal activity performed against three different strains of Candida showed that compound 3e was found superior/comparable to fluconazole (FLC) with IC50 values of 0.044 mu g/mL against Candida albicans (ATCC 90028), 12.022 mu g/mL against Candida glabrata (ATCC 90030), and 3.60 mu g/mL against Candida tropicalis (ATCC 750). Moreover, at their IC50 values, compounds 3e and 3h showed <5% hemolysis which indicates the non-toxic behaviour of these inhibitors. Cytotoxicity assay was also performed on VERO cell line and all the derivatives were found nontoxic up to the concentration of 10.0 mu g/mL. The in silico technique of 3D-QSAR was applied to establish structure activity relationship of the synthesized compounds. The results reveal the molecular fragments that play an essential role in improving the anticandidal activity. (C) 2015 Elsevier Masson SAS. All rights reserved.