Phenylethanoid and flavone glycosides from Ruellia tuberosa L

  • J Nat Med. 2013 Jan;67(1):228-33. doi: 10.1007/s11418-012-0658-7.
Chiobouaphong Phakeovilay  1 ,  Wannaporn Disadee ,  Poolsak Sahakitpichan ,  Somkit Sitthimonchai ,  Prasat Kittakoop ,  Somsak Ruchirawat ,  Tripetch Kanchanapoom
Affiliations
  • 1. Chemial Biology Program, Chulabhorn Graduate Institute, Bangkok, Thailand.
PMID: 22447282 DOI: 10.1007/s11418-012-0658-7
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.

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