Kur'ianov VO, Tokarev MK, Chupakhina TA, Chirva VI. [Synthesis of heteroaromatic N-beta-glycosides of N-acetylghicosamine under phase transfer conditions. III. 1,2,4-triazoIin-3-ones glucosaminides].
RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2012;
37:672-8. [PMID:
22332363 DOI:
10.1134/s1068162011050104]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The catalytic phase transfer reactions of 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-a-D-glucopyranosyl chloride with thiosubstituted 4-phenyl-5-R-thio-Delta2-1,2,4-triazolin-3-ones in solid alkali-organic solvent and in aqueous alkali-organic solvent were studied. The main products ofglucosaminilation reaction are the appropriate N-beta-glucosaminides. The effect of reaction conditions on the yield and composition of products formed was elucidated on the example of the reaction alpha-D-glucosaminyl chloride with 5-methylthio-4-phenyl-Delta2-1,2,4-triazolin-3-one. The optimal conditions of phase transfer glycosylation were established. N-1,2-trans-grycosidic bond formation was proved by 1H NMR and IR data as well as a comparison with spectral data obtained previously for the glycosides of similar structure.
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