New 3-deoxyanthocyanidins from leaves of Arrabidaea chica.
Two new 3-deoxyanthocyanidins, 6,7,3',4'-tetrahydroxy-5-methoxyflavylium and 6,7,4'-trihydroxy-5-methoxyflavylium, and the pigment carajurin, which has been previously identified, were isolated from dried leaves of Arrabidaea chica, a creeper native to the American tropics. The structures of the components were elucidated by 1H- and 13C-NMR spectroscopy and HPLC-MS, including X-ray crystallographic analysis for carajurin.
Devia
Beatriz
B
Laboratory of Pharmacognosy, Institute of Pharmacy B36, University of Liège, CHU Sart-Tilman, Tour 4, B-4000 Liège, Belgium. beatrizdevia@kikirpa.be
Llabres
Gabriel
G
Wouters
Jan
J
Dupont
Leon
L
Escribano-Bailon
Maria Teresa
MT
de Pascual-Teresa
Sonia
S
Angenot
Luc
L
Tits
Monique
M
D000872:Anthocyanins / Q000737:chemistry* / Q000302:isolation & purification*; D029402:Bignoniaceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*; D013053:Spectrophotometry
D000872:Anthocyanins