Converting maslinic acid into an effective inhibitor of acylcholinesterases
作者:Stefan Schwarz、Anne Loesche、Susana Dias Lucas、Sven Sommerwerk、Immo Serbian、Bianka Siewert、Elke Pianowski、René Csuk
DOI:10.1016/j.ejmech.2015.09.007
日期:2015.10
to act as inhibitors of cholinesterases, up to now maslinic acid has not been part of such studies. For this reason, three series of maslinic acid derivatives possessing modifications at different centers were synthesized and subjected to Ellman's assay to determine their inhibitory strength and type of inhibitory action. While parent compound maslinic acid was no inhibitor in these assays, some of
Microwave-assisted synthesis, anti-inflammatory and anti-proliferative activities of new maslinic acid derivatives bearing 1,5- and 1,4-disubstituted triazoles
作者:Karim Chouaïb、Stéphanie Delemasure、Patrick Dutartre、Hichem Ben Jannet
DOI:10.1080/14756366.2016.1193733
日期:2016.11.2
In this work, 40 analogs with a natural maslinic acid core (from Olea europaea L.) and various aromatic azides were synthesized. A regiospecific, facile and practical synthesis of 1,5-triazolyl derivatives by Ru(II)-catalyzed azide-alkyne cycloaddition (RuAAC), and mono-, bis- and tri-1,4-triazolyl derivatives by Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) was described. All the reactions were
Strong Inhibitory Activity and Action Modes of Synthetic Maslinic Acid Derivative on Highly Pathogenic Coronaviruses: COVID-19 Drug Candidate
作者:Raya Soltane、Amani Chrouda、Ahmed Mostafa、Ahmed A. Al-Karmalawy、Karim Chouaïb、Abdelwaheb dhahri、Rami Adel Pashameah、Ahlam Alasiri、Omnia Kutkat、Mahmoud Shehata、Hichem Ben Jannet、Jawhar Gharbi、Mohamed A. Ali
DOI:10.3390/pathogens10050623
日期:——
(17) structural analogues prepared from natural maslinic and oleanolic acids, screened against SARS-CoV-2 main protease. Furthermore, we experimentally validated the virtual data by measuring the half-maximal cytotoxic and inhibitory concentrations of each compound. Interestingly, the chlorinated isoxazole linked maslinic acid (compound 17) showed promising antiviral activity at micromolar non-toxic
Maslinic and oleanolic acids derivatives for treating SARS-CoV-2 infection
申请人:King Abdulaziz University
公开号:US11266632B1
公开(公告)日:2022-03-08
Provided are methods of using oleanolic acid and derivatives for treating coronavirus infection. The method includes using propargyl-moiety containing oleanolic acid derivatives for inhibiting coronavirus growth by impairing the viral replication of SARS-CoV-2 through inhibition of the viral function of SARS-CoV-2 main protease.
Esters and amides of maslinic acid trigger apoptosis in human tumor cells and alter their mode of action with respect to the substitution pattern at C-28
作者:Bianka Siewert、Elke Pianowski、René Csuk
DOI:10.1016/j.ejmech.2013.10.016
日期:2013.12
Cancer is one of the most commonly diagnosed diseases worldwide; its mortality rate is high, and there is still a demand for the development of antitumor active drugs. Triterpenoic acids show many pharmacological effects, among them antitumor activity. One of these, maslinic acid-1 is of interest because of its antitumor profile. It is not only cytotoxic but also triggers apoptosis in various human tumor cell lines. To improve the cytotoxicity of parent 1 we set out to synthesize a series of esters and amides differing in structure and lipophilicity. These compounds were tested in a sulforhodamine B assay for cytotoxicity, and screened for their ability to induce apoptosis using an acridine orange/propidium iodide assay, DNA laddering and cell cycle experiments. Esters containing small-chain, lipophilic residues increased the cytotoxicity whereas amides as well long-chain esters led to a decrease in activity. The antitumor activity seems to be independent from the substitution pattern at position C-28 for esters and amides but alters their mode of action. (C) 2013 Elsevier Masson SAS. All rights reserved.