New anthraquinones from Eleutherine americana

Three minor new anthraquinones were isolated from the bulb of Eleutherine americana Merr. et Heyne. Their structures were elucidated as methyl ethers of 3, 4, 8-trihydroxy-1-methyl-anthra-9, 10-quinone-2-carboxylic acid methyl ester 4-6 by spectral analyses including long-range selective proton deco...

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Veröffentlicht in:	Chemical & pharmaceutical bulletin 1983/11/25, Vol.31(11), pp.4206-4208
Hauptverfasser:	Komura, H, Mizukawa, K, Minakata, H, Huang, H, Qin, G
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences General pharmacology long-range selective proton decoupling (LSPD) Medical sciences Pharmacognosy. Homeopathy. Health food Pharmacology. Drug treatments
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Zusammenfassung:	Three minor new anthraquinones were isolated from the bulb of Eleutherine americana Merr. et Heyne. Their structures were elucidated as methyl ethers of 3, 4, 8-trihydroxy-1-methyl-anthra-9, 10-quinone-2-carboxylic acid methyl ester 4-6 by spectral analyses including long-range selective proton decoupling (LSPD) experiments in 13C-NMR.
ISSN:	0009-2363 1347-5223
DOI:	10.1248/cpb.31.4206