Natural Derivatives of 4H-pyran-4-one

Michal Uher, Olga Rajniaková

Department of Organic Chemistry, Technical University, Bratislava, Slovak Republic

Summary

In nature, the quantity of gamma-pyranone derivatives is small, which is compensated by the enormous number of naturally occurring chromones (flavones, isoflavones, flavanones). All the compounds with gamma-pyranone skeleton form an important group of six-member heterocycles in the chemistry of naturally occurring compounds. Currently, the attention being paid to the synthetic utility of these oxygen heterocycles is not proportional to their importance, but there is hope, that the situation will change in the near future.