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1. (Article ID: 11797)
 
Fossen T, Andersen ØM
Delphinidin 3′-galloylgalactosides from blue flowers of Nymphaéa caerulea
Phytochemistry 50(7) (1999) 1185-1188
 

Two novel acylated anthocyanins have been isolated from blue flowers of the African water lily Nymphaéa caerulea (=Nymphaéa capensis). By a combination of chromatography, electrospray MS and homo- and heteronuclear two-dimensional NMR techniques they were identified to be delphinidin 3′-O-(2″-O-galloyl-β-galactopyranoside) (1) and delphinidin 3′-O-(2″-O-galloyl-6″-O-acetyl-β-galactopyranoside) (2). Contrary to other anthocyanidin 3′-glycosides reported, 1 and 2 have the monosaccharide galactose instead of glucose on the B-ring and no glycosyl moiety on the anthocyanidin 3-position. The chemotaxonomic significance of anthocyanidin galloylgalactosides in Nymphaéaceae is discussed.

anthocyanins, water lily, Nymphaéa caerulea, Nymphaéaceae, blue flowers, 3′-galloylgalactosides, delphinidin 3′-O-(2″-O-galloyl-6″-O-acetyl-β-galactopyranoside), delphinidin 3′-O-(2″-O-galloyl-β-galactopyranoside)

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