4,6-dimethoxy-1,3,5-triazin-2-yl-d-glycosaminides: Novel substrates for transglycosylation reaction catalyzed by exo-d-glucosaminidase from amycolatopsis orientalis

Tomonari Tanaka, Tomonori Wada, Masato Noguchi, Masaki Ishihara, Atsushi Kobayashi, Takayuki Ohnuma, Tamo Fukamizo, Ryszard Brzezinski, Shin Ichiro Shoda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A novel sugar adduct, 4,6-dimethoxy-1,3,5-triazin-2-yl-d-glucosaminide (GlcN-DMT), has been prepared by the reaction of d-glucosamine (GlcN) and 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-morpholinium chloride (DMT-MM). The adduct was recognized by exo-d-glucosaminidase (GlcNase) from Amycolatopsis orientalis and transferred the GlcN moiety, giving rise to the corresponding glucosaminides. This chemo-enzymatic process was successfully applied to d-galactosamine (GalN). GalN-DMT prepared directly from GalN and DMT-MM behaved as an efficient glycosyl donor for transfer of the GalN moiety catalyzed by the same enzyme. The introduction of the 4,6-dimethoxy-1,3,5-triazin-2-yl leaving group to the anomeric center significantly enhanced transglycosylating ability, resulting in the efficient glycosidase-catalyzed synthesis of glycosaminides.

Original languageEnglish
Pages (from-to)634-646
Number of pages13
JournalJournal of Carbohydrate Chemistry
Volume31
Issue number8
DOIs
Publication statusPublished - 2012 Oct 1

Keywords

  • Amino sugar
  • Chemo-enzymatic synthesis
  • DMT-glycoside
  • Dehydrative condensing agent
  • Enzymatic transglycosylation
  • Glycosidase

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry

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