Results 241 to 250 of about 15,268,560 (303)

Ultra-sonication Assisted Synthesis of D-Glucosamine Based β-CD Inclusion complex and Its Application as an Aqueous Heterogeneous Organocatalytic System.

Journal of Organic Chemistry, 2020
For the first time, inclusion has been crafted between a carbohydrate based molecule and β-CD hydrophobic cavity for the asymmetric catalytic applications.
Dhiraj Rani, Aaftaab Sethi, Khushwinder Kaur, J. Agarwal   +3 more
semanticscholar   +1 more source

Enzymatic Microdetermination of D-Glucosaminate with D-Glucosaminate Dehydratase

Analytical Letters, 1982
Abstract A simple spectrophotometric method for the dectermination of D-glucosaminate with bacterial D-glaucosaminate dehydratase (EC 4.2.1.26) has been developed. The method is based on the enzymatic dehydration of D-gluco-saminatie and the spectrophotomeric determination of the product, 2-keto-3-deoxy-D-gluconate, as its semicarbazone.
Y. Imanga, R. Iwamoto
openaire   +2 more sources

Enzymatic synthesis of d-glucosaminic acid from d-glucosamine

Carbohydrate Research, 2005
D-glucosaminic acid (2-amino-2-deoxy-D-gluconic acid), a component of bacterial lipopolysaccharides and a chiral synthon, is easily prepared on a multigram scale by air oxidation of D-glucosamine (2-amino-2-deoxy-D-glucose) catalysed by glucose oxidase.
Helene Therisod, Fabio Pezzotti, Michel Therisod   +2 more
openaire   +2 more sources

Efficient production of d-glucosamine by diacetylchitobiose deacetylase catalyzed deacetylation of N-acetyl-d-glucosamine

Biotechnology Letters, 2022
D-Glucosamine (GlcN) is an important amino sugar with various applications in medicine, food & beverages, nutritional supplements, and dairy products. This study aimed to produce GlcN from N-acetyl-D-glucosamine (GlcNAc) with an efficient deacetylase, and apply different strategies to enhance GlcN production.We screened a series of deacetylases that ...
Lei Wang, Meirong Hu, Yong Tao
openaire   +2 more sources

SYNAPTOSOMAL PHOSPHORYLATION OF D‐GLUCOSAMINE

Journal of Neurochemistry, 1978
Abstract— Synaptosomal fractions from rat brains can phosphorylate d‐glucosamine once it is transported across the synaptosomal membrane. Intrasynaptosomal phosphorylation of d‐glucosamine was rapid; up to 80% of the d‐glucosamine was recovered as the phosphorylated amino sugar during 15 min of incubation with the substrate.
C. H. Tan, E. Raghupathy, N. A. Peterson
openaire   +3 more sources

A synthesis of phytosphingosine from D-glucosamine

Tetrahedron Letters, 1965
D-ribo-2-Benzamido-1,3,4-trihydroxyoctadecane (N-benzoyl-C18-phytosphingosine) and D-ribo-2-benzamido-1,3,4-trihydroxyeicosane (N-benzoyl-C20-phytosphingosine) have been synthesised by Wittig reactions between the aldehyde (IX) derived from 2-amino-2-deoxy-D-glucose and the appropriate long-chain phosphoranes.
Jill Cunningham, C. D. Warren, Roy Gigg
openaire   +4 more sources

An efficient enzymatic production of N-acetyl-d-glucosamine from crude chitin powders

Green Chemistry, 2016
In this study, we present an efficient affinity adsorption–enzymatic reaction integrated approach to produce N-acetyl-D-glucosamine (GlcNAc) from crude chitin powders (CP). Chitinase was first purified from the crude enzyme mixture by affinity adsorption
Alei Zhang, Cong Gao, Wang Jing, Kequan Chen, Pingkai Ouyang   +4 more
semanticscholar   +1 more source

In vivo antiviral activity of D-glucosamine

Archives of Virology, 1976
Intraperitoneal treatments with D-glucosamine, an inhibitor of the glycosylation of the viral envelope, decreased the growth rate of tumors induced in quails or in chicks by Rous sarcoma virus and increased the survival of mice inoculated with human influenza virus.
G. H. Werner, F. Floc'h
openaire   +2 more sources

Comparison of acidity and metal ion affinity of D-Glucosamine and N-acetyl-D-glucosamine, a DFT study

Journal of Molecular Graphics and Modelling, 2020
The derivatives of glucose such as glucosamine (β-D-GlcN) and N-acetyl-D-β-glucosamine (GlcNAc) are significant in several biological systems. D-GlcN has been used widely to treat osteoarthritis in humans and animal models as well as GlcNAc has been proposed as a treatment for autoimmune diseases.
Alireza Fattahi, Zahrabatoul Mosapour Kotena   +1 more
openaire   +3 more sources

The antioxidative and immunostimulating properties of d-glucosamine

International Immunopharmacology, 2007
The objective of the present study was to investigate the antioxidant activity and immunostimulating property of glucosamine (GlcN) using various in vitro and in vivo tests. Results showed that GlcN possessed excellent antioxidant activities as manifested by strong chelating effect on ferrous ions and protection of macromolecules such as protein, lipid,
Han Baoqin, Liu Bing, Liu Wanshun, Yang Yan, Wang Chang-hong, Fu Chenwei, Chen Liehuan   +6 more
openaire   +3 more sources