title: Cyanosalvianin, a supramolecular blue metalloanthocyanin, from petals of Salvia uliginosa.
abstract: A metalloanthocyanin, cyanosalvianin, was found in blue petals of Salvia uliginosa. Cyanosalvianin consisted of 3-O-(6-O-p-coumaroylglucopyranosyl)-5-O-(4-O-acetyl-6-O-malonylglucopyranosyl) delphinidin, 7,4'-di-O-glucopyranosylapigenin and magnesium ion. We reproduced the same blue color as the petals by mixing the three components together. An ESI-MS measurement gave a molecular weight of 9014 indicating the composition of cyanosalvianin to be six molecules of the anthocyanin component, six molecules of the flavone component and two magnesium ions. The special arrangement of the organic components in cyanosalvianin was analyzed by CD and 2D-NMR spectroscopy. It was clarified that cyanosalvianin has a similar structure to that of commelinin, a metalloanthocyanin isolated from blue dayflower, Commelina communis.
authors.affiliation: Graduate School of Human Informatics, Nagoya University, Chikusa, Nagoya 464-8601, Japan.
authors.forename: Mihoko
authors.initials: M
authors.lastname: Mori
authors.forename: Tadao
authors.initials: T
authors.lastname: Kondo
authors.forename: Kumi
authors.initials: K
authors.lastname: Yoshida
mesh_terms: D000872:Anthocyanins / Q000737:chemistry* / Q000378:metabolism; D035264:Flowers / Q000737:chemistry* / Q000378:metabolism; D046911:Macromolecular Substances; D008958:Models, Molecular; D015394:Molecular Structure; D010860:Pigments, Biological; D027544:Salvia / Q000737:chemistry* / Q000378:metabolism
chemical_list: D000872:Anthocyanins; D046911:Macromolecular Substances; D010860:Pigments, Biological; C539280:cyanosalvianin