Phenylethanoid and flavone glycosides from Ruellia tuberosa L.

Chiobouaphong Phakeovilay, Wannaporn Disadee, Poolsak Sahakitpichan, Somkit Sitthimonchai, Prasat Kittakoop, Somsak Ruchirawat, Tripetch Kanchanapoom

Journal of natural medicines 2013 Jan

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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.

Citation

Chiobouaphong Phakeovilay, Wannaporn Disadee, Poolsak Sahakitpichan, Somkit Sitthimonchai, Prasat Kittakoop, Somsak Ruchirawat, Tripetch Kanchanapoom. Phenylethanoid and flavone glycosides from Ruellia tuberosa L. Journal of natural medicines. 2013 Jan;67(1):228-33