Acylated anthocyanins from the violet-blue flowers of Orychophragonus violaceus
- 作者：Toshio Honda ; Fumi Tatsuzawa ; Nao Kobayashi ; Hiroko Kasai ; Seiji Nagumo ; Atsushi Shigihara and Norio Saito
- 关键词：Orychophragonus violaceus ; Cruciferae ; Violet-blue flower color ; Acylated cyanidin 3-sambubioside-5-glucoside ; Caffeic acid ; p-Coumaric acid ; Ferulic acid ; Sinapic acid ; Malonic acid
- 刊名：Phytochemistry
- 出版年：2005
- 期刊代码：85_00319422
- 类别：ch
- 出版时间：2005
- 卷：66
- 期：15
- 页码：1844-1851
- 文件大小：140 K
摘要
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-(β-d-glucopyranosyl)-trans-caffeoyl)-β-d-glucopyranosyl)-trans-caffeoyl)-β-d-xylopyranosyl)-6-O-(4-O-(β-d-glucopyranosyl)-trans-acyl)-β-d-glucopyranoside]-5-O-(6-O-malonyl-β-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-(β-d-glucopyranosyl)-trans-caffeoyl)-β-d-glucopyranosyl)-trans-caffeoyl)-β-d-xylopyranosyl)-6-O-(4-O-(β-d-glucopyranosyl)-trans-feruloyl)-β-d-glucopyranoside]-5-O-β-d-glucopyranoside. In these flowers, the anthocyanins 2 and 3 were present as dominant pigments, and 1 was obtained in rather small amounts.