Zwei weitere Iridoid‐glycoside und ein Monoterpen‐glycosid aus Sambucus ebulus L. (Caprifloiaceae). 3. Mitteilung über die Inhaltsstoffe der Zwergholunderwurzel

Abstract

New Iridoid Glycosides and a Monoterpene Glycoside from Sambucus ebulus L. (Caprifloiaceae)From the roots of Sambucus ebulus L., two novel valeriana‐type ester iridoid glycosides, 6′‐O‐apiosylebuloside (1) and 7,7‐O‐dihydroebuloside (3), along with the open‐chain monoterpene glycoside 5 were isolated. Their structure elucidation is based mainly on one‐ and two‐dimensional NMR methods. 1H,1H‐COSY experiments permitted complete assignment of signals arising from the disaccharide unit in 1. Biogenetically, 3 seems to represent the equivalent of loganin in the valeriana‐type series of iridoid glycosides.