Pyrones or pyranones are a class of cyclic chemical compounds. They contain an unsaturated six membered ring containing one oxygen atom and a ketonefunctional group. There are two isomers denoted as 2-pyrone and 4-pyrone. The 2-pyrone structure is found in nature as part of the coumarin ring system. 4-Pyrone is found in some natural chemical compounds such as maltol and kojic acid.
References
Introduction to Organic Chemistry, Andrew Streitwieser, Jr. and Clayton H. Heathcock, Third Edition, pp 1038-1040. ISBN 0-02-418140-4
