Topic
Aldose
About: Aldose is a research topic. Over the lifetime, 1270 publications have been published within this topic receiving 27197 citations. The topic is also known as: aldoses.
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TL;DR: In this article, the authors synthesized Co(II, Ni(II), Cu(II) with N,N′-(aldose)2-thiocarbohydrazide (LH2) and Zn(II)-II with N−N−−thIoBH2 and characterized by analytical means as well as by spectral techniques, FTIR, 1H NMR, EPR, UV spectroscopy, and CD.
Abstract: Complexes of Co(II), Ni(II), Cu(II), and Zn(II) with N,N′-(aldose)2–thiocarbohydrazide (LH2) were synthesized, isolated as solid products and characterized by analytical means as well as by spectral techniques, FTIR, 1H NMR, EPR, UV spectroscopy, and CD. All the metal ions formed M[LH]X complexes. Molar conductance values in DMF indicate non-electrolytic complexes. In DMSO with tetramethylammonium chloride supporting electrolyte, the copper complex displays irreversible cyclic voltammetric responses with E p near −0.621 and 0.461 V versus Ag/AgCl at scan rate of 0.1 V s−1. Probable structures for the complexes are proposed. †Dedicated to our mentor Professor Vinayak B. Mahale on the occasion of his 65th birthday.
4 citations
TL;DR: The kinetics of aminolysis of 1-thio-β-D-glucopyranosyl esters of N-protected alanines in dichloromethane, at 26°, by ethyl glycinate, under pseudo-first-order conditions follows the relationship k- obsd = k 2 [H-Gly-OEt].
4 citations
TL;DR: In this article, the authors presented a method for the synthesis of methyl β-D-glucopyranoside, followed by selective 3-O-tosylation, reductive acetal opening, chlorination, radical deoxygenation and transesterification.
4 citations
Journal Article•
TL;DR: The equilibrium constants of the primary binding of both the initial and produced ketose and also the initial aldose were unequivocally determined by varying the initial substrate concentrations, confirming the hypothesis of flip-flop functioning of the transketolase active sites.
Abstract: A kinetic model of bisubstrate reaction catalyzed by baker's yeast transketolase is proposed. The model considers individual stages of substrates reversible primary binding. The model corresponds to the observed kinetics of product accumulation within a wide range of initial substrate concentrations. Kinetic parameters for the best simulation of the experimental data are defined. The equilibrium constants of the primary binding of both the initial and produced ketose and also the initial aldose were unequivocally determined by varying the initial substrate concentrations. The dissociation constants of the primary enzyme-substrate complex for the initial ketose (xylulose 5-phosphate) and the reaction product (sedoheptulose 7-phosphate) were found to differ by more than by two orders of magnitude. The result is discussed in the context of the hypothesis of flip-flop functioning of the transketolase active sites.
4 citations
TL;DR: In this article, an unsaturated ketohexo-pyranosyl nucleoside of 5-fluorouracil was synthesized using pyridinium dichromate/molecular sieves system.
Abstract: Synthesis of the title compound, an unsaturated ketohexo-pyranosyl nucleoside of 5-fluorouracil is reported. It was prepared by oxidation of the corresponding dibenzoylhexopyranosyl nucleoside with pyridinium dichromate/molecular sieves system.
4 citations