Results 171 to 180 of about 8,066 (202)

Endo‐α‐Mannosidase‐Catalyzed Transglycosylation

ChemBioChem, 2017
AbstractIn order for facilitating the synthesis of oligosaccharides, transglycosylation reactions mediated by glycoside hydrolases have been studied in various contexts. In this study, we examined the transglycosylating activity of a Golgi endo‐α‐mannosidase.
Shogo, Iwamoto, Yuta, Kasahara, Yayoi, Yoshimura, Akira, Seko, Yoichi, Takeda, Yukishige, Ito, Kiichiro, Totani, Ichiro, Matsuo   +7 more
openaire   +2 more sources

Transglycosylation specificity of glycosyl donors in transglycosylation of stevioside catalysed by cyclodextrin glucanotransferase

Food Chemistry, 2014
Specificity of glycosyl donors is a critical issue in transglycosylation of stevioside, the main methodology to improve edulcorant quality of stevioside. The most popular glucanotransferase applied in this reaction is cyclodextrin glucanotransferase (CGTase) that catalyses cyclisation, coupling, hydrolysis and disproportionation simultaneously; which ...
Tong, Lu, Yong-mei, Xia
openaire   +2 more sources

Transglycosylation of Guanine Nucleosides

Nucleosides and Nucleotides, 1987
Abstract Tetraacetylguanosine was converted into fully acetylated derivatives of acyclovir and 9-β-D-xylofuranosyl guanine in a novel transglyco-sylation ...
Jeratzy Boryski, Bozenna Golankiewicz
openaire   +1 more source

An Enzymatic Transglycosylation of Purine Bases

Nucleosides, Nucleotides & Nucleic Acids, 2007
An enzymatic transglycosylation of purine heterocyclic bases employing readily available natural nucleosides or sugar-modified nucleosides as donors of the pentofuranose fragment and recombinant nucleoside phosphorylases as biocatalysts has been investigated.
Jarkko, Roivainen, Tatiana, Elizarova, Seppo, Lapinjoki, Igor A, Mikhailopulo, Roman S, Esipov, Anatoly I, Miroshnikov   +5 more
openaire   +2 more sources

Transglycosylation Reactions of 6-Thioguanine Acyclonucleosides

Nucleosides, Nucleotides and Nucleic Acids, 2000
9-(2-Acetoxyethoxy)methyl-N2-acetyl-6-thoguanine (2) undergoes two different transglycosylation reactions: i) the 79 isomerization, which gives the respective 7-regioisomer (3) as the major product, ii) the 9S6 glycosyl migration, which leads to a 9,S6-disubstituted product (4). S6-Methylation completely stopped the reversibility of transglycosylation.
A, Manikowski, J, Boryski
openaire   +2 more sources

Oligosaccharide synthesis by enzymatic transglycosylation

Glycoconjugate Journal, 1990
Agricultural Research Service, United States Department of Agriculture, Northern Regional Research Center, 1815 N. University St., Peoria, IL 61604, U.S.A. 2 Biochemical and Food Process Engineering, Agricultural Engineering Department, Purdue University, West Lafayette, IN 47907, U.S.A.
Gregory L Cote, Bernard Y Tao
openaire   +1 more source

[Transglycosylation of L-ascorbic acid].

Prikladnaia biokhimiia i mikrobiologiia, 2007
Cyclodextrin glucanotransferases (CGTase, EC 2.4.1.19) produced by mesophilic, thermophilic, and halophilic bacilli, as well as maltase (EC 3.2.1.20) produced by various strains of Saccharomyces cerevisiae have been applied for transglycosylation of L-ascorbic acid using starch, maltodextrin, gamma-cyclodextrin, and maltose as donors of glucosyl ...
A A, Markosian, L A, Abelian, M O, Adamian, Zh I, Akopian, V A, Abelian   +4 more
openaire   +3 more sources

Transglycosylation Reaction of 6-Thioguanosine

Nucleosides and Nucleotides, 1999
Abstract Peracetylated 6-thioguanosine (2) undergoes the so far unknown N→S transglycosylation reaction to form a stable 9,S6 -bis(ribosyl) derivative (3) and N2-acetyl-6-thioguanine (4). The reaction takes place at elevated temperatures with no catalyst, or in solution in the presence of acidic catalysts.
Andrzej Manikowski, Jerzy Boryski
openaire   +1 more source

Enzymatic transglycosylation of xylose using a glycosynthase

Carbohydrate Research, 2005
The application of the hyperactive glycosynthase derived from Agrobacterium sp. beta-glucosidase (AbgE358G-2F6) to the synthesis of xylo-oligosaccharides by using alpha-D-xylopyranosyl fluoride as donor represents the first successful use of glycosynthase technology for xylosyl transfer.
Young-Wan, Kim, Hongming, Chen, Stephen G, Withers   +2 more
openaire   +2 more sources