title: Mammillarinin: a new malonylated betacyanin from fruits of Mammillaria.
abstract: A new betacyanin endogenously occurring in fruits of nine Mammillaria species, i.e., M. roseo-alba (Boedecker), M. donatii (Berge), M. coronata (Scheidweiler), M. karwinskiana (Martius), M. gummifera (Engelmann), M. infernillensis (Craig), M. centricirrha (Lemaire), M. krameri (Muehlenpfordt), and M. magnimamma (Haworth), was studied by means of spectroscopic techniques. The betacyanin was identified as betanidin 5-O-(6'-O-malonyl)-beta-sophoroside for which the trivial name mammillarinin is proposed. In some Mammillaria species this compound was reported as a dominating pig-ment. Except for its epimer, two other isomers of mammillarinin were tentatively identified as betanidin/isobetanidin 5-O-(4'-O-malonyl)-beta-sophoroside present in the fruits as acyl migration products.
authors: Department of Chemical Engineering and Technology, Institute C-1, Faculty of Analytical Chemistry, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland. swybran@chemia.pk.edu.pl
authors: Sławomir
authors: S
authors: Wybraniec
authors: Barbara
authors: B
authors: Nowak-Wydra
mesh_terms: D000215:Acylation; D050859:Betacyanins / Q000032:analysis* / Q000737:chemistry; D029421:Cactaceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D003653:Decarboxylation; D004187:Disaccharides / Q000032:analysis* / Q000737:chemistry; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
chemical_list: D050859:Betacyanins; D004187:Disaccharides; C524825:mammillarinin