نتایج جستجو برای: lawsone

تعداد نتایج: 154  

2011
Wan Nik F. Zulkifli

Corrosion behaviour of aluminium alloy inhibited by henna was investigated by using weight loss analysis, Fourier Transform Infrared (FTIR), electrochemical impedance spectroscopy (EIS) and potendiodynamic polarization study. Lawsonia inermis or also known as henna was extracted by using ethyl acetate and methanol. The result from these characterization shows that henna extracted in ethyl aceta...

Journal: :Molecules 2014
Lars-Oliver Klotz Xiaoqing Hou Claus Jacob

Naphthoquinones may cause oxidative stress in exposed cells and, therefore, affect redox signaling. Here, contributions of redox cycling and alkylating properties of quinones (both natural and synthetic, such as plumbagin, juglone, lawsone, menadione, methoxy-naphthoquinones, and others) to cellular and inter-cellular signaling processes are discussed: (i) naphthoquinone-induced Nrf2-dependent ...

Journal: :Journal of the Brazilian Chemical Society 2021

Furanaphthoquinones are well known in medicinal chemistry for exhibiting relevant structural heterogeneity and bioactivities. In this work, it was synthesized a series of furanaphthoquinones through tandem reaction between lawsone (8) cyclic ketones the presence morpholine. This strategy provides an efficient general method synthesizing with activity against epimastigote form Trypanosoma cruzi ...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2004
Botros R Mikhaeil Farid A Badria Galal T Maatooq Mohamed M A Amer

The immunomodulatory bioassay-guided fractionation of the methanolic extract of henna (Lawsonia inermis L.; syn. Lawsonia alba L.) leaves resulted in the isolation of seven compounds; three have been isolated for the first time from the genus, namely p-coumaric acid, 2-methoxy-3-methyl-1,4-naphthoquinone and apiin, along with the previously isolated compounds: lawsone, apigenin, luteolin, and c...

Journal: :The Journal of biological chemistry 2003
Jacques J Kessl Benjamin B Lange Torsten Merbitz-Zahradnik Klaus Zwicker Philip Hill Brigitte Meunier Hildur Pálsdóttir Carola Hunte Steve Meshnick Bernard L Trumpower

Atovaquone is a substituted 2-hydroxynaphthoquinone that is used therapeutically to treat Plasmodium falciparum malaria, Pneumocystis carinii pneumonia, and Toxoplasma gondii toxoplasmosis. It is thought to act on these organisms by inhibiting the cytochrome bc1 complex. We have examined the interaction of atovaquone with the bc1 complex isolated from Saccharomyces cerevisiae, a surrogate, nonp...

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