Journal
TETRAHEDRON LETTERS
Volume 58, Issue 2, Pages 159-162Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2016.11.123
Keywords
Flavylium derivatives; Cycloaddition reactions; Pyrano-3-deoxyanthocyanins; Photosensitizers; NMR spectroscopy
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Funding
- FCT/MEC [PTDC/QEQ-QFI/1971/2014]
- FEDER [UID/QUI/50006/2013 - POCI/01/0145/FEDER/007265]
- FCT [SFRH/BPD/72652/2010]
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The synthesis and structural characterization by LC-MS and NMR of novel pyranoluteolinidin derivatives are reported. The compounds result from the reactions between luteolinidin and three different carboxylic acids in wine model-like solutions. The three pigments possess different substituents attached to the D ring (methyl, catechol and dimethylaminophenyl groups) and the same catechol group in the B ring, yielding a wide spectrum of colors from yellow to pink-purple. (C) 2016 Elsevier Ltd. All rights reserved.
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