A new alpha-methylanthraquinone glucoside from Emex spinosus.
A new alpha-methylanthraquinone glucoside, laccaic acid D 8-o-beta-D-glucoside, and six known anthraquinones have been isolated from the aqueous alcoholic extract of Emex spinosus (L.) Campd. (Polygonaceae), together with two known flavonol glycosides. The structures were determined by conventional analytical methods and confirmed by MS and NMR spectral analysis, including 2D experiments for the new compound.
Hawas
Usama W
UW
Phytochemistry and Plant Systematics Department, NRC, Dokki, Cairo, Egypt.
El-Ansari
Mohamed A
MA
Laatsch
Hartmut
H
D000880:Anthraquinones / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D019664:Polygonaceae / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000302:isolation & purification
D000880:Anthraquinones; D005960:Glucosides; C513843:laccaic acid D 8-O-glucoside; C016527:isoquercitrin; D011794:Quercetin