Phenyl-y-benzopyrone

Flavonoids are a group of naturally occurring substances derived from flavone (phenyl-y-benzopyrone) that... 

The main constituents of flavonoid drugs are 2-phenyl-y-benzopyrones (2-phenyl chromones) or structurally related, mostly phenolic, compounds. 

Flavonoids occur in plants as mono- and di-glycosides and derive from 2-phenyl-y-benzopyrone. Their UV spectra depend on the number and substitution of the hydroxy groups in the phenol nucleus. Flavonoid derivatives have been also found in stigmata of Crocus sativus. Among them kaempherol diglycoside has been isolated and identified by mass spectra [38]. 

Synonyms. 2-Phenyl Chromone 2-Phenyl-y-benzopyrone 2-Phenyl-l, 4-benzopyrone. 

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