Iridoid Glucosides from Lamium garganicum subsp. laevigatum

Authors: TAYFUN ERSÖZ, DUYGU KAYA, FUNDA NURAY YALÇIN, CAVİT KAZAZ, ERHAN PALASKA, CHARLOTT H. GOTFREDSEN, SOREN R. JENSEN, İHSAN ÇALIŞ

Abstract: Phytochemical investigations on the above-ground parts of Lamium garganicum subsp. laevigatum resulted in the isolation of 7 iridoid glucosides: shanzhiside methyl ester (1), barlerin (8-O-acetylshanzhiside methyl ester) (2), 6-O-syringyl-8-O-acetylshanzhiside methyl ester (3), 6\beta-hydroxyipolamiide (4), lamalbide (5), dehydropenstemoside (6), and sesamoside (7). The structure of the iridoids was elucidated by spectroscopic (UV, IR, 1D- and 2D-NMR, and ESI-MS) evidence.

Keywords: Lamium garganicum L. subsp. laevigatum, Lamiaceae, iridoid glucosides

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