Synthesis and neuroprotective effect of E-3,4-dihydroxy styryl aralkyl ketones derivatives against oxidative stress and inflammation
摘要:
E-3,4-Dihydroxy styryl aralkyl ketones as well as their 3,4-diacetylated derivatives as the analogues of neuroprotective agent CAPE were designed and synthesized for improving stability and lipid solubility. The neuroprotective activities of target compounds 10a-g and 11a-g were tested by three models in vitro, including 1,1-diphenyl-2-picrylhydrazyl radical scavenging capacity, neuronal protecting effect against damage induced by H2O2 in PC12 cells and nitric oxide suppression effect in BV2 microglial cells. The results demonstrated that compounds 10f and 11f exhibited the most potent neuroprotective effect against oxidative stress and inflammation, which is higher than that of the lead compound CAPE. (C) 2013 Elsevier Ltd. All rights reserved.
Novel diarylheptanoids as inhibitors of TNF-α production
作者:Sameer Dhuru、Dilip Bhedi、Dnyaneshwar Gophane、Kiran Hirbhagat、Vijaya Nadar、Dattatray More、Sapna Parikh、Roda Dalal、Lyle C. Fonseca、Firuza Kharas、Prashant Y. Vadnal、Ram A. Vishwakarma、H. Sivaramakrishnan
DOI:10.1016/j.bmcl.2011.04.040
日期:2011.6
β-hydroxyketone by the reaction of substituted 4-phenyl butan-2-ones with pyridine-3-carboxaldehyde in presence of LDA and the subsequent dehydration of the same to obtain the α,β-unsaturated ketones. Compounds 4i, 5b, 5d, and 5g significantly inhibit lipopolysaccharide (LPS)-induced TNF-α production from human peripheral blood mononuclear cells in a dose-dependent manner. Of note, the in vitro TNF-α inhibition
Discovery of curcumin inspired sulfonamide derivatives as a new class of carbonic anhydrase isoforms I, II, IX, and XII inhibitors
作者:P. V. Sri Ramya、Srinivas Angapelly、Andrea Angeli、Chander Singh Digwal、Mohammed Arifuddin、Bathini Nagendra Babu、Claudiu T. Supuran、Ahmed Kamal
DOI:10.1080/14756366.2017.1380638
日期:2017.1.1
inhibited by the new sulfonamides, with KIs in the range of 0.75-8.8 nM. hCA IX, a tumor-associated isoform involved in cancer progression and metastatic spread was potently inhibited by the new sulfonamides, with KIs in the range of 2.3-87.3 nM, whereas hCA XII, and antiglaucoma and anticancer drug target, was inhibited with KIs in the range of 6.1-71.8 nM. It is noteworthy that one of the new compounds
Solvent Dependent Divergent Reactivity of Electron‐Rich Dienones with and without Visible Light: Access to Cyclopropanated Furans and Butenolides
作者:Jayanta Saha、Indrajit Das
DOI:10.1002/adsc.201901273
日期:2020.2.6
hexafluoroisopropanol (HFIP) as an additive promotes intramolecular radical cascade cyclization to afford cyclopropanated furans. Molecular dioxygen in the air serves as a redoxcatalyst in this reaction which is proposed to proceed through a radical cation intermediate generated by single‐electron transfer (SET) from a phototransient dienone to oxygen. By changing the solvent from isopropanol to HFIP
Enantioselective Synthesis of Unsymmetrical Diaryl-Substituted Spirocyclohexanonepyrazolones through a Cascade [4+2] Double Michael Addition
作者:Jin-Xin Zhang、Nai-Kai Li、Zhao-Min Liu、Xiao-Fei Huang、Zhi-Cong Geng、Xing-Wang Wang
DOI:10.1002/adsc.201200925
日期:2013.3.11
ortho‐fluorobenzoic acid is an efficient catalyst system for the doubleMichaeladdition of arylidenepyrazolones with α,β‐unsaturated ketones, providing chiral unsymmetrical 6,10‐diaryl‐substituted spiro[cyclohexanone‐pyrazolone] derivatives in high yields (up to 98%) with good diastereoselectivities and excellent enantioselectivities (up to 88:12 dr, 99% ee).
Selenocyanation of Aryl and Styryl Methyl Ketones in the Presence of Selenium Dioxide and Malononitrile: An Approach for the Synthesis of α-Carbonyl Selenocyanates
作者:Ibakyntiew D. Marpna、Kmendashisha Wanniang、Tyrchain Mitre Lipon、O. Risuklang Shangpliang、Bekington Myrboh
DOI:10.1021/acs.joc.0c02630
日期:2021.1.15
α-carbonyl selenocyanates from aryl methyl ketones/styryl methyl ketones using selenium dioxide as the selenating agent under simple reaction conditions. This reaction has notable advantages over the traditional methods in terms of accessibility and affordability of the starting materials. The method features the interaction of aryl methyl ketones/styryl methyl ketones with selenium dioxide and malononitrile