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Pyrones
Keto-pyrans.
Year introduced: 1991(1975)
Coumarins
Synthetic or naturally occurring substances related to coumarin, the delta-lactone of coumarinic acid.
Polygala
A plant genus of the family POLYGALACEAE that contains onjisaponins, xanthones, pyrones, and benzophenones. The name is similar to other snakeroots such as ASARUM; SANICULA; ARISTOLOCHIA; AGERATINA; and others.
Year introduced: 2003
macrophomate synthase [Supplementary Concept]
catalyzes the multistep conversion of 2-pyrones to benzoates
Date introduced: May 22, 2000
tricyclic pyrones [Supplementary Concept]
synthetic pyrone derivatives characterized by three unsaturated, six-membered rings
Date introduced: March 13, 2018