Leptosidin was the first
aurone
An aurone is a heterocyclic chemical compound which is a type of flavonoid. There are two isomers of the molecule, with (''E'')- and (''Z'')-configurations. The molecule contains a benzofuran element associated with a benzylidene linked in pos ...
to be isolated in ''
Coreopsis grandiflora
''Coreopsis grandiflora'' is a North American species of perennial plant in the family Asteraceae. The common name is large-flowered tickseed. It is found in eastern Canada (Quebec, Ontario, New Brunswick) and much of the United States, especial ...
'' by Geissman T.A. and Heaton C.D. in 1943. Leptosidin blocks the active residues of
PRKACA.
References
Aurones
Catechols
Phenol ethers
{{Aromatic-stub