Results 21 to 30 of about 13,085 (246)

Amidochromenes for Promising Antileishmanial Activity

open access: yesNatural Product Communications, 2017
Numerous natural products having a 2,2-dimethylchromene (2,2-dimethylbenzopyrane) structural element present interesting biological activities that may, therefore, be considered as privileged pharmacophore.
Abdelhak Neghra   +5 more
doaj   +1 more source

Synthesis of methylenebisamides using CC- or DCMT-activated DMSO

open access: yesBeilstein Journal of Organic Chemistry, 2008
Bisamides are key fragments for the introduction of gem-diaminoalkyl residues into retroinverso pseudopeptide derivatives and in the synthesis of peptidomimetic compounds. The literature methods for these types of compounds have certain drawbacks.
Qiang Wang   +3 more
doaj   +1 more source

NaY Zeolite: A Useful Catalyst for Nitrile Hydrolysis

open access: yesMolecules, 2000
The NaY zeolite catalysed hydrolysis of nitriles to primary amides is reported. It is found that aryl nitriles with strong electron-withdrawing substituents and cyanopyridines are readily hydrolysed in the water suspension, while aliphatic nitriles do ...
Bogdan A. Å olaja   +3 more
doaj   +1 more source

An unprecedented palladium-arsenic catalytic cycle for nitriles hydration

open access: yesFrontiers in Chemistry, 2023
An unprecedented palladium/arsenic-based catalytic cycle for the hydration of nitriles to the corresponding amides is here described. It occurs in exceptionally mild conditions such as neutral pH and moderate temperature (60°C).
Damiano Cirri   +2 more
doaj   +1 more source

Nickel-catalyzed transamidation of aliphatic amide derivatives

open access: yesChemical Science, 2017
We report a two-step approach to achieve the transamidation of secondary aliphatic amides using non-precious metal catalysis.
Jacob E. Dander   +2 more
openaire   +5 more sources

Synthesis, Docking Studies and Acetylcholinesterase Inhibition of Open-Chain Carbohydrate Amides

open access: yesMedical Sciences Forum, 2022
Alzheimer’s disease (AD) is the most common age-related cause of dementia among elderly people. AD is a severe neurodegenerative disorder characterized by progressive memory and cognition loss that leads to disability and inevitably to death and is ...
Maria Isabel Ismael   +6 more
doaj   +1 more source

Structure Elucidation of Calyxoside B, a Bipolar Sphingolipid from a Marine Sponge Cladocroce sp. through the Use of Beckmann Rearrangement

open access: yesMarine Drugs, 2021
Marine sponges are an excellent source of biologically active secondary metabolites. We focus on deep-sea sponges for our discovery study. A marine sponge Cladocroce sp. exhibited cytotoxic activity in the bioactivity screening.
Kenji Sugawara   +7 more
doaj   +1 more source

Mechanistic Aspects of the Electrochemical Oxidation of Aliphatic Amines and Aniline Derivatives

open access: yesMolecules, 2023
The electrochemical oxidation of amines is an essential alternative to the conventional chemical transformation that provides critical routes for synthesising and modifying a wide range of chemically useful molecules, including pharmaceuticals and ...
Ashwin K. V. Mruthunjaya   +1 more
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 94, Revision 1 (FGE.94Rev1): Consideration of aliphatic amines and amides evaluated in an addendum to the group of aliphatic and aromatic amines and amides evaluated by the JECFA (68th meeting)

open access: yesEFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Effect of Added Aliphatic Acids at Amidation of Aliphatic Acid Methylates

open access: yesJournal of Japan Oil Chemists' Society, 1962
It is reported that the ammonolsis rate of aliphatic acid esters is very slow than that of aliphatic acids. Authors carried out experiments on amidation of methylated aliphatic acid in the flow reactor system, semi-batch reactor system and in the batch reactor system.
NITANAI, Seimei   +2 more
openaire   +2 more sources

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