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Indoleacetic acid derivatives from the seeds of Ziziphus jujuba var. spinosa

Authors
Journal
Fitoterapia
0367-326X
Publisher
Elsevier
Identifiers
DOI: 10.1016/j.fitote.2014.09.001
Keywords
  • Ziziphus Jujuba
  • Chemical Ingredients
  • Indoleacetic Acid Derivatives
  • Flavone C-Glycosides
  • Antioxidant Activity

Abstract

Abstract A pair of diastereoisomers, the N-glycosylated derivatives of dioxindole-3-hydroxy-3-acetic acid 1–2, and their conjugates with flavonoids 3–8, was isolated from the seeds of Ziziphus jujuba var. spinosa. Their structures were elucidated by NMR spectroscopic analyses, and the absolute configurations were determined by circular dichroism method. Compounds 3–10 were evaluated for the antioxidant capacity, using the radical absorbance capacity (ORAC) assay.

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