High-Field 1H-nmr Spectral Analysis of Some Cucurbitacins

High-Field 1H-nmr Spectral Analysis of Some Cucurbitacins

1H-nmr spectra of the natural products cucurbitacins A, B, C, D, E, F, I, L, 23, 24-dihydrocucurbitacin F, and hexanorcucurbitacin F, as well as three acetylated derivatives, were measured at 360 MHz in pyridine-d5. Chemical shifts and coupling constants were tabulated. In addition to all of the rin...

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Veröffentlicht in:Journal of natural products (Washington, D.C.) D.C.), 1985-05, Vol.48 (3), p.429-434
Hauptverfasser: Che, Chun-tao, Fang, Xinde, Phoebe, Charles H, Kinghorn, A. Douglas, Farnsworth, Norman R, Yellin, Benjamin, Hecht, Sidney M
Format: Artikel
Sprache:eng
Schlagworte:
Biological and medical sciences
Cucurbitacins
ELAEOCARPUS
elaeocarpus dolichostylus
General pharmacology
HIDROCARBUROS
HYDROCARBONS
HYDROCARBURE
Magnetic Resonance Spectroscopy
Medical sciences
NUCLEAR MAGNETIC RESONANCE
Pharmacology. Drug treatments
Physicochemical properties. Structure-activity relationships
Plants, Medicinal - analysis
SPECTRAL ANALYSIS
Triterpenes - analysis
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Zusammenfassung:1H-nmr spectra of the natural products cucurbitacins A, B, C, D, E, F, I, L, 23, 24-dihydrocucurbitacin F, and hexanorcucurbitacin F, as well as three acetylated derivatives, were measured at 360 MHz in pyridine-d5. Chemical shifts and coupling constants were tabulated. In addition to all of the ring and side-chain protons, it was possible to assign several of the hydroxy group signals of these compounds. These compiled data should be useful for the structure determination of new compounds in this series.
ISSN:0163-3864
1520-6025
DOI:10.1021/np50039a010