نتایج جستجو برای: carboxylate
تعداد نتایج: 7252 فیلتر نتایج به سال:
Electron detachment dissociation (EDD) Fourier transform mass spectrometry has recently been shown to be a useful method for tandem mass spectrometry analysis of sulfated glycosaminoglycans (GAGs). EDD produces abundant glycosidic and cross-ring fragmentations that are useful for localizing sites of sulfation in GAG oligosaccharides. Although EDD fragmentation can be used to characterize GAGs i...
It was reported that oseltamivir (Tamiflu) absorption was mediated by human peptide transporter (hPEPT) 1. Understanding the exact mechanism(s) of absorption is important in the context of drug-drug and diet-drug interactions. Hence, we investigated the mechanism governing the intestinal absorption of oseltamivir and its active metabolite (oseltamivir carboxylate) in wild-type [Chinese hamster ...
Acetyl-CoA synthetase catalyzes the activation of acetate by the acetylation of the thiol group of Coenzyme A, while hydrolyzing ATP to AMP and pyrophosphate. The Arabidopsis thaliana acetyl-CoA synthetase (atACS) was compared to other acyl-CoA synthetases, and was computationally modeled on the available crystal structures of the Saccharomyces cerevisiae ACS1 and Salmonella enterica ACS. This ...
Quantum mechanics (B3LYP density functional theory) combined with solvation (Poisson-Boltzmann polarizable continuum solvent model) was used to investigate six mechanisms for the aerobic oxidation of alcohols catalyzed by (NHC)Pd(carboxylate)(2)(H(2)O) complexes (NHC = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene). Of these, we find that "reductive beta-hydride elimination", in which the be...
The local adsorption site of the monotartrate and bitartrate species of R,R-tartaric acid deposited on Cu(110) have been determined by scanned-energy mode photoelectron diffraction (PhD). In the monotartrate phase the molecule is found to adsorb upright through the O atoms of the single deprotonated carboxylic acid (carboxylate) group, which are located in different off-atop sites with associat...
Novel series of quinoline derivatives incorporating cyclopropyl ring and sulfone linkage as substituents have been synthesized, oxidation ethyl-2-cyclopropyl-4-(substituted phenylthio)quinoline-3-carboxylate was carried out to set phenyl sulfonyl)quinoline-3-carboxylate. An ecofriendly synthesis by the reaction glacial acetic acid 30% hydrogen peroxide at room temperature. The synthesized evalu...
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