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Syntheses of branched-chain sugars with push-pull functionality.

K Peseke1, H Feist, E Cuny

  • 1Fachbereich Chemie, Universität Rostock, Germany.

Carbohydrate Research
|June 16, 1992
PubMed
Summary
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This study details the synthesis of novel carbohydrate derivatives. New bis(alkylthio)methylene and pyrazole derivatives of methyl 4,6-O-benzylidene-erythro-hexopyranosid-uloses were successfully created.

Area of Science:

  • Carbohydrate Chemistry
  • Organic Synthesis
  • Medicinal Chemistry

Background:

  • Methyl 4,6-O-benzylidene-erythro-hexopyranosid-uloses are versatile carbohydrate scaffolds.
  • Exploring novel functionalization of these scaffolds can lead to new chemical entities.

Purpose of the Study:

  • To synthesize novel bis(alkylthio)methylene and pyrazole derivatives from a specific hexopyranosid-ulose.
  • To investigate the reactivity of these new derivatives with aromatic amines and hydrazine hydrate.

Main Methods:

  • Reaction of methyl 4,6-O-benzylidene-3(2)-deoxy-alpha-D-erythro-hexopyranosid-2(3)-ulose with carbon disulfide, alkyl iodide, and sodium hydride.
  • Subsequent reactions of the intermediate with aromatic amines and hydrazine hydrate.

Main Results:

Related Experiment Videos

  • Synthesis of methyl 4,6-O-benzylidene-3(2)-[bis(alkylthio)methylene]-3(2)-deoxy-alpha-D-erythro-hexopyranosid-2(3)-uloses.
  • Formation of N-aryl-2-aryliminomethyl derivatives via rearrangement upon reaction with aromatic amines.
  • Generation of a 5-methylthio pyrazole derivative through reaction with hydrazine hydrate.

Conclusions:

  • The study successfully demonstrates a new synthetic route to functionalized carbohydrate derivatives.
  • The observed rearrangement and pyrazole formation highlight the diverse reactivity of the synthesized intermediates.