Inhaltsstoffe von Cupuliferae, 9. Ein ungewöhnlicher Diester des Astragalins mit cis??und trans??p??Cumarsäure aus Quercus ilex L.
…, B Parodi, F Sancassan
Index: Romussi, Giovanni; Parodi, Brunella; Sancassan, Fernando Liebigs Annalen der Chemie, 1984 , # 11 p. 1867 - 1868
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Citation Number: 5
Abstract
In Fortsetzung unserer Arbeit uber Acylflavonoide aus Quercus;/ex L.-4) untersuchten wir eine Verbindung, deren UV-Spektrum (s. Experimenteller Teil) auf einen p-Cumarsaureester eines Kampferol-3-0-glycosids hinwies' v3). Alkalische Hydrolyse lieferte Kampfero~-3-O-~- D-glucopyranosid (Astragalin, 2) sowie cis-und trans-p-Cumarsaure. Vier Dubletts im 'H- NMR-Spektrum der persilylierten Verbindung bei 6= 7.52,(1 H, J= 16 Hz) und 6= 6.16 (IH, ...
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