(13)C, (15)N CPMAS NMR and GIAO DFT calculations of stereoisomeric oxindole alkaloids from Cat's Claw (Uncaria tomentosa)

Oxindole alkaloids, isolated from the bark of Uncaria tomentosa [Willd. ex Schult.] Rubiaceae, are considered to be responsible for the biological activity of this herb. Five pentacyclic and two tetracyclic alkaloids were studied by solid-state NMR and theoretical GIAO DFT methods. The (13)C and (15...

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Veröffentlicht in:	Solid state nuclear magnetic resonance 2008-11, Vol.34 (4), p.202-209
Hauptverfasser:	Paradowska, Katarzyna, Wolniak, Michał, Pisklak, Maciej, Gliński, Jan A, Davey, Matthew H, Wawer, Iwona
Format:	Artikel
Sprache:	eng
Schlagworte:	Alkaloids - chemistry Cat's Claw - chemistry Chloroform - chemistry Deuterium - chemistry Indoles - chemistry Magnetic Resonance Spectroscopy Quantum Theory Stereoisomerism
Online-Zugang:	Volltext
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