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Details van artikel 169 van 178 gevonden artikelen
| Titel: |
The Structure of N-(1-Deoxy-β-D-fructopyranos-1-yl)-L-proline Monohydrate (“D-Fructose-L-proline”) and N-(1,6-Dideoxy-α-L-fructofuranos-1-yl)-L-proline (“L-Rhamnulose-L-proline”) |
| Auteur: |
Mossine, Valeri V. Barnes, Charles L. Mawhinney, Thomas P. |
| Verschenen in: |
Journal of carbohydrate chemistry |
| Paginering: | Jaargang 26 (2007) nr. 4 pagina's 249-266 |
| Jaar: |
2007-05 |
| Inhoud: |
D-Fructose-L-proline is an important food-related precursor for thermally generated aromas. We report the crystal structure analysis of N-(1-deoxy-β-D-fructopyranos-1-yl)-L-proline monohydrate (1) and its analog, N-(1,6-dideoxy-α-L-fructofuranos-1-yl)-L-proline (“L-rhamnulose-L-proline”) (2). The carbohydrate rings adopt the normal 2C5 pyranose chair conformation in 1 and the 5E furanose envelope conformation in 2. Bond lengths and valence angles in 1 and 2 compare well with the average values from related pyranose and furanose structures. All hydroxyl and carboxyl oxygen atoms, ammonium groups, and the water molecule in 1 are involved in an extensive hydrogen bonding, which forms a system of infinite chains with attached side chains. The hydrogen bonding network in 2 is an infinite three-dimensional network and is represented by separate short finite and infinite chains. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 169 van 178 gevonden artikelen
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