Structural simplification of bioactive natural products with multicomponent synthesis. 4. 4H-Pyrano-[2,3-b]naphthoquinones with anticancer activity
摘要:
4H-Pyrano-[2,3-b]naphthoquinone is a structural motif commonly found in natural products manifesting anticancer activities. As part of a program aimed at structural simplification of bioactive natural products utilizing multicomponent synthetic processes, we developed a compound library based on this heterocyclic scaffold. We found that several library members displayed low micromolar antiproliferative activity and induced apoptosis in human cancer cells. Selected compounds showed promising activity against cancer cell lines resistant to proapoptotic stimuli, demonstrating their potential in treating cancers with dismal prognoses. (c) 2012 Elsevier Ltd. All rights reserved.
Facile one-pot green synthesis of 2-amino-4<i>H</i>-benzo[<i>g</i>]chromenes in aqueous ethanol under ultrasound irradiation
作者:Shabalala Nhlanhla Gracious、Nagaraju Kerru、Suresh Maddila、Werner E. van Zyl、Sreekantha B. Jonnalagadda
DOI:10.1080/00397911.2020.1761393
日期:2020.7.2
Abstract We report an efficient green one-pot approach for the synthesis of eighteen novel dihydro-4H-benzo[g]chromene derivatives underultrasoundirradiation conditions. The three-component condensation reaction proceeded through Knoevenagel-Michael reaction of chosen active methylene compounds and 2-hydroxynaphthalene-1,4-dione with different substituted aldehydes in the presence of ammonium acetate