Acylated anthocyanins from the violet-blue flowers of Orychophragonus violaceus |
| |
Authors: | Honda Toshio Tatsuzawa Fumi Kobayashi Nao Kasai Hiroko Nagumo Seiji Shigihara Atsushi Saito Norio |
| |
Affiliation: | Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa, Tokyo 142-8501, Japan. honda@hoshi.ac.jp |
| |
Abstract: | 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. |
| |
Keywords: | Orychophragonus violaceus Cruciferae Violet-blue flower color Acylated cyanidin 3-sambubioside-5-glucoside Caffeic acid p-Coumaric acid Ferulic acid Sinapic acid Malonic acid |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|