Results 261 to 270 of about 2,722,551 (326)

Development of recyclable magnetic cross-linked enzyme aggregates for the synthesis of high value rare sugar d-tagatose in aqueous phase catalysis

, 2021
In this study, a high value rare sugar D-tagatose was synthesized using recyclable magnetic catalysts. A magnetic cross-linked enzyme aggregate (mCLEA) of L-arabinose isomerase (L-AI) was developed for the transformation of D-galactose into D-tagatose ...
S. K. Rai, Varun Kumar, S. Yadav
semanticscholar   +1 more source

Rare sugars and sugar-based synthons by chemo-enzymatic synthesis

Enzyme and Microbial Technology, 2000
The unique catalytic potential of the fungal enzyme pyranose oxidase was demonstrated by preparative conversions of a variety of carbohydrates, and by extensive chemical characterization of the reaction products with NMR spectroscopy. The studies revealed that POx not only oxidizes most substrates very efficiently but also that POx possesses a glycosyl-
, Giffhorn, , Köpper, , Huwig, , Freimund   +3 more
openaire   +2 more sources

Dual-Enzyme Metal Hybrid Crystal for Direct Transformation of Whey Lactose into a High-Value Rare Sugar D-Tagatose: Synthesis, Characterization, and a Sustainable Process.

ACS Biomaterials Science & Engineering, 2020
A dual-enzyme metal-organic hybrid crystal was constructed through self-assembling of manganese phosphate embedded with β-galactosidase and L-arabinose isomerase for facile synthesis of rare sugar D-tagatose.
S. K. Rai, H. Kaur, B. S. Kauldhar, S. Yadav   +3 more
semanticscholar   +1 more source

Convergent Synthesis of a Pentasaccharide Containing a Rare Sugar 4‐amino‐4‐deoxy‐D‐fucose Related to the Cell Wall O‐polysaccharide of Acinetobacter baumannii 90

ChemistrySelect
A convenient synthetic strategy has been developed for the synthesis of a pentasaccharide related to the cell wall O‐polysaccharide of Acinetobacter baumannii (A.
Samim Sahaji, Anup Kumar Misra
semanticscholar   +1 more source

Access to Reverse Glycosyl Azides and Rare Sugar-Based Glycosyl Azides via Radical Decarboxylative Azidation: Divergent Synthesis of 4'-C-Azidonucleosides as Potential Antiviral Agents.

Organic Letters
The radical decarboxylative azidation of structurally diverse uronic acids has been established as an efficient approach to reverse glycosyl azides and rare sugar-derived glycosyl azides under the action of Ag2CO3, 3-pyridinesulfonyl azide, and K2S2O8 ...
Qikai Sun, Jingxuan Ni, Shanshan Li, Han Ding, Peng Wang, Ni Song, Xin Wang, Ming Li   +7 more
semanticscholar   +1 more source

D-allose, a typical rare sugar: properties, applications, and biosynthetic advances and challenges

Critical reviews in food science and nutrition
D-allose, a C-3 epimer of D-glucose and an aldose-ketose isomer of D-allulose, exhibits 80% of sucrose’s sweetness while being remarkably low in calories and nontoxic, making it an appealing sucrose substitute.
Xinrui Tang, Y. Ravikumar, Guoyan Zhang, J. Yun, Mei Zhao, Xianghui Qi   +5 more
semanticscholar   +1 more source

Fluorine-directed 1,2-trans glycosylation of rare sugars

Organic & Biomolecular Chemistry, 2016
To reconcile the urgent need to access well defined β-configured 2,6-di-deoxypyranose analogues for chemical biology, with the intrinsic α-selectivity of the native system, the directing role of fluorine at C2 has been explored.
Nuria Aiguabella, Mareike C. Holland, Ryan Gilmour   +2 more
openaire   +2 more sources

Bioproduction strategies for rare hexose sugars

Naturwissenschaften, 2002
A new strategy for the bioproduction of all ketohexoses was developed using hexitols as intermediates. Biocatalysts used to employ the strategy were D-tagatose 3-epimerase, which epimerizes ketohexoses at the C-3 position, and oxidoreductases, which catalyze oxidation-reduction reactions between ketohexoses and the corresponding hexitols. Arranging all
openaire   +2 more sources

Molybdenum sulfide-2D nanosheets offering multiple metallic sites enable different sugar epimerization reactions to rare sugars in water

Reaction Chemistry & Engineering, 2023
In recent years, significant efforts have been made to formulate health-beneficial low-calorie sugars that can regulate the rising problems of lifestyle disorders, such as obesity and diabetes, in humans.
Senthil M. Arumugam, Sangeeta Mahala, Bhawana Devi, Sandeep Kumar, Ravi Kumar Kunchala, S. Elumalai   +5 more
semanticscholar   +1 more source

Bonumose to make rare sugars in US

C&EN Global Enterprise, 2021
The food ingredient start-up Bonumose has partnered with the French drug services firm Novasep to manufacture rare sugars, including tagatose and allulose.
openaire   +1 more source