Secondary metabolites from Eremostachys laciniata

Ihsan Calis, Aysegül Güvenc, Metin Armagan, Mehmet Koyuncu, Charlotte Held Gotfredsen, Søren Rosendal Jensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

From the aerial parts of Eremostachys laciniata (Lamiaceae), a new acidic iridoid glucoside, 5-desoxysesamosidic acid (1) was isolated in addition to thirteen known iridoid glucosides, 5-desoxysesamoside (2), sesamoside (3), 6β-hydroxy-7-epi-loganin (4), chlorotuberoside (5), 5-deoxypulchelloside I (6), lamalbide (7), lamalbidic acid (8), phloyosides I (7-epi-phlomiol) (9), and II (10), phlomiol (11), shanzhiside (12), shanzhiside methyl ester (13), and barlerin (8-O-acetylshanzhiside methyl ester) (14), four phenylethanoid glycosides, verbascoside (15), leucosceptoside A (16), martynoside (17), and forsythoside B (18), and five flavone derivatives, luteolin (19), luteolin 7-O-β-D-glucopyranoside (20), luteolin 7-O-(6''-O-β-D-apiofuranosyl)-β-D-glucopyranoside (21), apigenin 7-O-β-D-glucopyranoside (22), and apigenin 7-O-(6''-O-p-coumaroyl)-β-D-glucopyranoside (23). The structures of the metabolites were elucidated from spectroscopic (UV, IR, 1D- and 2D-NMR) and ESI-MS evidence, as well as from their specific optical rotation. The presence of these metabolites of three different classes strongly supports the close relationship of the genera Eremostachys and Phlomis.
Original languageEnglish
JournalNatural Products Communications
Volume3
Issue number2
Pages (from-to)117-124
ISSN1934-578X
Publication statusPublished - 2008

Keywords

  • 5-desoxysesamosidic acid
  • Lamiaceae
  • phenylethanoid glycosides
  • iridoids
  • Eremostachys laciniata
  • flavonoids

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