Article ID Journal Published Year Pages File Type
2538460 Fitoterapia 2014 8 Pages PDF
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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