Anthocyanins acylated with gallic acid from chenille plant, Acalypha hispida.
Three anthocyanins were isolated from the red flowers of chenille plant, Acalypha hispida Burm. (Euphorbiaceae) by a combination of chromatographic techniques. Their structures were elucidated mainly by homo- and heteronuclear nuclear magnetic resonance spectroscopy and electrospray mass spectrometry, and supported with complete assignments of 13C NMR resonances. The novel pigment, cyanidin 3-O-(2"-galloyl-6"-O-alpha-rhamnopyranosyl-beta-galactopyranoside) (5%), contains the disaccharide robinoside. The other anthocyanins were identified as cyanidin 3-O-(2"-galloyl-beta-galactopyranoside) (85%), and cyanidin 3-O-beta-galactopyranoside (5%). Anthocyanins acylated with gallic acid have previously been identified in species from the families Nymphaeaceae and Aceraceae, and tentatively in Abrus precatorius (Leguminosae).
Reiersen
Bergitte
B
Department of Chemistry, University of Bergen, Allégt. 41, N-5007 Bergen, Norway.
Kiremire
Bernard T
BT
Byamukama
Robert
R
Andersen  M
Øyvind M
ØM
D000215:Acylation; D000872:Anthocyanins / Q000737:chemistry* / Q000302:isolation & purification; D019665:Euphorbiaceae / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry; D005707:Gallic Acid / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
D000872:Anthocyanins; D005707:Gallic Acid