Synthesis and anti-neuroinflammatory activity of N-heterocyclic analogs based on natural biphenyl-neolignan honokiol
作者:Yue Yuan、Lalita Subedi、Daesung Lim、Jae-Kyung Jung、Sun Yeou Kim、Seung-Yong Seo
DOI:10.1016/j.bmcl.2018.11.014
日期:2019.1
Novel isoxazole and pyrazole analogs based on natural biphenyl-neolignan honokiol were synthesized and evaluated for their inhibitory activities against nitric oxide production in lipopolysaccharide-activated BV-2 microglial cells. The isoxazole skeleton was constructed via nitrile oxide cycloaddition from oxime 3 and pyrazole was generated by condensation of 4-chromone and alkylhydrazine. Among the analogs, 13b and 14a showed stronger inhibitory activities with IC50 values of 8.9 and 1.2 mu M, respectively, than honokiol.