Anthrone C-glucosides from Rheum emodi.
In a study of the anthraderivatives in roots of Rheum emodi, three new anthrone C-glucosides, named 10-hydroxycascaroside C (1), 10-hydroxycascaroside D (2) and 10R-chrysaloin 1-O-beta-D-glucopyranoside (3) were isolated besides the rare compounds cascaroside C (4), cascaroside D (5) and cassialoin (6). Additionally the investigation resulted in the isolation of an acetylated chrysophanol glucoside, 8-O-beta-D-(6'-O-acetyl)glucopyranosyl-chrysophanol (7). The structures were established by comprehensive spectroscopic investigations.
Krenn
Liselotte
L
Institute of Pharmacognosy, University of Vienna, Austira. liselotte.krenn@univie.ac.at
Pradhan
Riddhi
R
Presser
Armin
A
Reznicek
Gottfried
G
Kopp
Brigitte
B
D000107:Acetylation; D000873:Anthracenes / Q000737:chemistry* / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000032:analysis; D018517:Plant Roots / Q000737:chemistry; D012250:Rheum / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D000095322:Anthrones
D000873:Anthracenes; D005960:Glucosides; D010936:Plant Extracts; C493017:10-hydroxycascaroside C; C493018:10-hydroxycascaroside D; C493019:10R-chrysaloin 1-O-beta-D-glucopyranoside; C004522:anthrone; D000095322:Anthrones