Synthese von C-Glycosiden der N-Acetylneuraminsäure und weiteren Derivaten
Synthesis of C-Glycosides of N-Acetylneuraminic Acid and Other DerivativesReaction of the β-pyranosyl chloride 1 of N-acetylneuraminic acid with allyl(tributyl)stannane under radical-induced conditions affords a mixture of the allyl C-glycosides 2/3. After deprotection, the pure allyl α-C-glycoside 5 and the analogous β isomer 7 can be isolated. The allyl C-glycosides 2 and 3 are converted into the corresponding epoxypropyl C-glycosides 9 and 11 by epoxidation of the allylic group. Further modified allyl C-glycosides are prepared from the C-3-hydroxylated N-acetylneuraminic acid, which are available as pure α- and β-C-glycosides 19 and 21 after deprotection. At C-3 modified compounds are also synthesized which have allyl and azido residues at C-3. All compounds are interesting as potential inhibitors of sialidases, CMP sialate syntheses, and viral infection..
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
1991 |
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Erschienen: |
1991 |
Reproduktion: |
Wiley InterScience Backfile Collection 1832-2000 |
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Enthalten in: |
Zur Gesamtaufnahme - volume:1991 |
Enthalten in: |
Liebigs Annalen - 1991(1991) vom: Mai, Seite 487-495 |
Sprache: |
Deutsch |
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Beteiligte Personen: |
Paulsen, Hans [Sonstige Person] |
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Links: |
dx.doi.org [Deutschlandweit zugänglich] |
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Umfang: |
9 |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLEJ162401191 |
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520 | |a Synthesis of C-Glycosides of N-Acetylneuraminic Acid and Other DerivativesReaction of the β-pyranosyl chloride 1 of N-acetylneuraminic acid with allyl(tributyl)stannane under radical-induced conditions affords a mixture of the allyl C-glycosides 2/3. After deprotection, the pure allyl α-C-glycoside 5 and the analogous β isomer 7 can be isolated. The allyl C-glycosides 2 and 3 are converted into the corresponding epoxypropyl C-glycosides 9 and 11 by epoxidation of the allylic group. Further modified allyl C-glycosides are prepared from the C-3-hydroxylated N-acetylneuraminic acid, which are available as pure α- and β-C-glycosides 19 and 21 after deprotection. At C-3 modified compounds are also synthesized which have allyl and azido residues at C-3. All compounds are interesting as potential inhibitors of sialidases, CMP sialate syntheses, and viral infection. | ||
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