1H and 13C NMR signal assignment of cucurbitacin derivatives from Citrullus colocynthis (L.) Schrader and Ecballium elaterium L. (Cucurbitaceae).
2D NMR-derived 1H and 13C NMR signal assignments of six structurally closely related cucurbitacin derivatives are presented. The investigated 2-O-beta-D-glucopyranosylcucurbitacins I, J, K, and L were obtained from Citrullus colocynthis (L.) Schrader whereas the aglyca cucurbitacin E and I were isolated from Ecballium elaterium L.
Seger
Christoph
C
Institute of Pharmacy, Department of Pharmacognosy, University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria.
Sturm
Sonja
S
Mair
Maria-Elisabeth
ME
Ellmerer
Ernst P
EP
Stuppner
Hermann
H
D002247:Carbon Isotopes; D029773:Citrullus / Q000737:chemistry*; D019662:Cucurbitaceae / Q000737:chemistry*; D054728:Cucurbitacins; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D008968:Molecular Conformation; D011522:Protons; D012015:Reference Standards; D014315:Triterpenes / Q000737:chemistry*
D002247:Carbon Isotopes; D011522:Protons; D014315:Triterpenes; D054728:Cucurbitacins