Results 11 to 20 of about 107,424 (195)

A simple and efficient process for the extraction of naringin from grapefruit peel waste

open access: yesGreen Processing and Synthesis, 2018
An improved method to obtain naringin, a bitter flavored flavanone glicoside with proven biological activities, from grapefruit (Citrus x paradisi L.) peel waste is described. The proposed modification of the known process, which involves extraction with
Victor Mauricio M.   +4 more
doaj   +1 more source

1,2-Naphthoquinone-4-sulfonic acid salts in organic synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2022
Several low molecular weight naphthoquinones are very useful in organic synthesis. These compounds have given rise to thousands of other naphthoquinones that have been tested against various microorganisms and pharmacological targets, including being ...
Ruan Carlos B. Ribeiro   +5 more
doaj   +1 more source

Synthesis of platinum and palladium complexes with bis-(hydroxy imines)

open access: yesOrbital: The Electronic Journal of Chemistry, 2012
The Schiff bases are an important class of compounds well used as ligands in coordination chemistry. The functionalized bis-imines, that represent a specific group of Schiff base, have been studied in our research group both for the evaluation of ...
Lucas M. Arantes   +2 more
doaj   +1 more source

Selenonium Salt as a Catalyst for Nucleophilic Substitution Reactions in Water: Synthesis of Thiocyanites and Selenocyanates

open access: yesMolecules, 2023
Organothiocyanates and selenocyanates are valuable compounds, both in terms of functional group interconversion and due to their biological activities. In this contribution, we report the synthesis of a series of these important substances in a mixture ...
Alix Y. Bastidas Ángel   +2 more
doaj   +1 more source

One-pot preparation of substituted pyrroles from α-diazocarbonyl compounds

open access: yesBeilstein Journal of Organic Chemistry, 2008
In this work an efficient one-pot synthesis of substituted pyrroles 7a–n is described, which involves the in situ formation of dihydrofurans ethyl 5-butoxy-2-methyl-4,5-dihydrofuran-3-carboxylate (4), 1-(5-butoxy-2-methyl-4,5-dihydrofuran-3-yl)ethanone ...
Fernando de C. da Silva   +5 more
doaj   +1 more source

Analysis of metabolites from plants of the Swartzia genus using chemical indexes: evolutionary tendencies

open access: yesEclética Química, 2018
The chemical indexes, suggested by Gottlieb et al., have not been used before regarding evolutionary tendency of species in the Swartzia genus. However, the importance of this work encour- aged for an analysis of the Swartzia genus using the metabolites ...
Aderbal F. Magalhães   +3 more
doaj   +1 more source

Benzylamines as highly potent inhibitors of the sterol biosynthesis pathway in Leishmania amazonensis leading to oxidative stress and ultrastructural alterations

open access: yesScientific Reports, 2022
Leishmaniasis is a neglected disease caused by protozoan parasites of the Leishmania genus. Benzylamines are a class of compounds selectively designed to inhibit the squalene synthase (SQS) that catalyzes the first committed reaction on the sterol ...
Sara Teixeira de Macedo-Silva   +6 more
doaj   +1 more source

HPLC Quantification of Cytotoxic Compounds from Aspergillus niger

open access: yesJournal of Chemistry, 2017
A high-performance liquid chromatography method was developed and validated for the quantification of the cytotoxic compounds produced by a marine strain of Aspergillus niger.
Paula Karina S. Uchoa   +5 more
doaj   +1 more source

Synthetic model of a new deoxybenzoin derivative from Deguelia hatschbachii A.M.G. Azevedo

open access: yesEclética Química, 2018
In this paper we describe the synthesis of 2 ́,4 ́-dimethoxy-8-(propyl-2-one)-deoxybenzoin, a new compound employed as a model for the comparison with the respective spectral data for 6’,4- dihydroxy-3’-(3,3- dimethylallyl)-2",2"-dimethylchromene(5",6":5’
A. F. Magalhães   +3 more
doaj   +1 more source

Rational Design and Multicomponent Synthesis of Lipid–Peptoid Nanocomposites towards a Customized Drug Delivery System Assembly

open access: yesMolecules, 2023
Nanotechnology has assumed a significant role over the last decade in the development of various technologies applied to health sciences. This becomes even more evident with its application in controlled drug delivery systems.
Thaissa Pasquali F. Rosalba   +3 more
doaj   +1 more source

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