Related Experiment Videos
2,3'-anhydrosucrose.
1Biotechnology Centre, Institute of Chemical Technology, Prague, Czechoslovakia.
Carbohydrate Research
|September 19, 1990
Summary
Alkaline hydrolysis of a sucrose derivative yields 2,3'-anhydrosucrose. Further chemical modifications and synthesis confirmed the structure of this and related anhydro-sucrose compounds.
Area of Science:
- Carbohydrate Chemistry
- Organic Synthesis
- Structural Elucidation
Background:
- Sucrose derivatives are important in various chemical and biological processes.
- Understanding the reactivity of anhydro sugars provides insights into glycosidic bond formation and cleavage.
Purpose of the Study:
- To investigate the alkaline hydrolysis of alpha-D-glucopyranosyl 3,4-anhydro-beta-D-ribo-hexulofuranoside.
- To elucidate the structure of the resulting 2,3 -anhydrosucrose and its derivatives.
- To confirm structural assignments through further chemical transformations and unambiguous synthesis.
Main Methods:
- Alkaline hydrolysis of the starting anhydro-sucrose derivative.
- Nuclear Magnetic Resonance (NMR) and mass spectrometry for structural analysis.
- Selective protection and derivatization of hydroxyl groups (tritylation, isopropylidenation).
- Chemical conversion and synthesis of related anhydro-sucrose compounds.
Main Results:
- Alkaline hydrolysis of compound 1 yielded 2,3 -anhydrosucrose (2).
- The structure of 2 was confirmed via its hexa-acetate (3) using NMR and mass spectrometry.
- Several derivatives (4, 5, 6) were synthesized from 2, aiding structural confirmation.
- A dianhydro-galacto-sucrose derivative (7) was synthesized and its structure confirmed.
Conclusions:
- The study successfully characterized 2,3 -anhydrosucrose and its derivatives.
- NMR, mass spectrometry, and chemical synthesis were crucial for structural determination.
- The findings contribute to the understanding of anhydro sugar chemistry and reactivity.