Erschienen in:
01.01.2013 | Note
Phenylethanoid and flavone glycosides from Ruellia tuberosa L.
verfasst von:
Chiobouaphong Phakeovilay, Wannaporn Disadee, Poolsak Sahakitpichan, Somkit Sitthimonchai, Prasat Kittakoop, Somsak Ruchirawat, Tripetch Kanchanapoom
Erschienen in:
Journal of Natural Medicines
|
Ausgabe 1/2013
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Abstract
A new phenylethanoid glycoside, isocassifolioside (8), and two new flavone glycosides, hispidulin 7-O-α-l-rhamnopyranosyl-(1′″ → 2″)-O-β-d-glucuronopyranoside (11) and pectolinaringenin 7-O-α-l-rhamnopyranosyl-(1′″ → 2″)-O-β-d-glucuronopyranoside (12) were isolated from the aerial portions of Ruellia tuberosa L., together with verbascoside (1), isoverbascoside (2), nuomioside (3), isonuomioside (4), forsythoside B (5), paucifloside (6), cassifolioside (7), hispidulin 7-O-β-d-glucuronopyranoside (9) and comanthoside B (10). The structure elucidations were based on analyses of chemical and spectroscopic data including 1D- and 2D-NMR. The isolated compounds 1–12 exhibited radical scavenging activity using ORAC assay.