Isofuranonaphthoquinones and phenolic and knipholone derivatives from the roots of Bulbine capitata

Three isofuranonaphthoquinones, 2-hydroxy-3-methoxy-5-(2-propenyl)phenol, knipholone-6′-methyl ether and five known quinones were isolated and characterized on the basis of spectroscopic data. The roots of Bulbine capitata yielded five new compounds, 2-hydroxy-3-methoxy-5-(2-propenyl) phenol, 5,8-di...

Full description

Saved in:
Bibliographic Details
Published in:Phytochemistry (Oxford) 1997-11, Vol.46 (6), p.1063-1067
Main Authors: Bezabih, Merhatibeb, Motlhagodi, Selebo, Abegaz, Berhanu M.
Format: Article
Language:English
Subjects:
Biological and medical sciences
chemical constituents of plants
Chemical constitution
chemical structure
derivatives
Fundamental and applied biological sciences. Psychology
Liliaceae
Liliopsida
medicinal plants
naphthoquinone
nuclear magnetic resonance spectroscopy
phenolic compounds
Plant physiology and development
roots
spectral analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Three isofuranonaphthoquinones, 2-hydroxy-3-methoxy-5-(2-propenyl)phenol, knipholone-6′-methyl ether and five known quinones were isolated and characterized on the basis of spectroscopic data. The roots of Bulbine capitata yielded five new compounds, 2-hydroxy-3-methoxy-5-(2-propenyl) phenol, 5,8-dihydroxy-1-methylnaphtho[2,3-c]furan-4,9-dione, 5-hydroxy-8-methoxy- or 8-hydroxy-5-methoxy-1-methylnaphtho[2,3-c]furan-4,9-dione, 5,8-dihydroxy-1-hydroxymethylnaphtho[2,3-c]furan-4,9-dione and knipholone-6′-methyl ether in addition to the known compounds 8-hydroxy-1-methylnaphtho[2,3-c]furan-4,9-dione, chrysophanol, 10,10′-chrysophanol bianthrone, knipholone and isoknipholone. The structures were determined on the basis of spectroscopic data.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(97)00402-0