Acylated anthocyanins from the violet-blue flowers of Orychophragonus violaceus.
Three acylated cyanidin 3-sambubioside-5-glucosides (1-3) were isolated from the violet-blue flowers of Orychophragonus violaceus, and their structures were determined by chemical and spectroscopic methods. Two of those acylated anthocyanins (1 and 3) were cyanidin 3-O-[2-O-(2-O-(4-O-(6-O-(4-O-(beta-D-glucopyranosyl)-trans-caffeoyl)-beta-D-glucopyranosyl)-trans-caffeoyl)-beta-D-xylopyranosyl)-6-O-(4-O-(beta-D-glucopyranosyl)-trans-acyl)-beta-D-glucopyranoside]-5-O-(6-O-malonyl-beta-D-glucopyranoside)s, in which the acyl groups were p-coumaric acid for 1, and sinapic acid for 3, respectively. The last anthocyanin 2 was cyanidin 3-O-[2-O-(2-O-(4-O-(6-O-(4-O-(beta-D-glucopyranosyl)-trans-caffeoyl)-beta-D-glucopyranosyl)-trans-caffeoyl)-beta-D-xylopyranosyl)-6-O-(4-O-(beta-D-glucopyranosyl)-trans-feruloyl)-beta-D-glucopyranoside]-5-O-beta-D-glucopyranoside. In these flowers, the anthocyanins 2 and 3 were present as dominant pigments, and 1 was obtained in rather small amounts.
Honda
Toshio
T
Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa, Tokyo 142-8501, Japan. honda@hoshi.ac.jp
Tatsuzawa
Fumi
F
Kobayashi
Nao
N
Kasai
Hiroko
H
Nagumo
Seiji
S
Shigihara
Atsushi
A
Saito
Norio
N
D000872:Anthocyanins / Q000737:chemistry* / Q000302:isolation & purification; D002934:Cinnamates / Q000302:isolation & purification; D003116:Color; D035264:Flowers / Q000737:chemistry*; D007564:Japan; D008314:Malonates / Q000302:isolation & purification; D009005:Monosaccharides / Q000302:isolation & purification
D000872:Anthocyanins; D002934:Cinnamates; D008314:Malonates; D009005:Monosaccharides; C017154:cyanidin