Anthocyanins with an unusual acylation pattern from stem of Allium victorialis |
| |
Authors: |
yvind M Andersen and Torgils Fossen |
| |
Institution: | Department of Chemistry, University of Bergen, Allégt. 41, N-5007, Bergen, Norway |
| |
Abstract: | Two novel anthocyanins have been isolated from the stem of Allium victorialis. By means of chemical degradation and spectroscopy, especially homo- and hetero-nuclear two-dimensional NMR techniques, the structures were determined to be cyanidin 3-O-(3″,6″-O-dimalonyl-β-glucopyranoside) (76.6%) and cyanidin 3-O-(3″,O-malonyl-β-glucopyranoside) (13.8%). This is the first report of acylation of the 3-position in the sugar moiety of any anthocyanin. The stability of malonyl substitution in the 3″-position on glucose is higher than the corresponding 6″-malonylation. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|