4-Hydroxygrenoblone, Another Uncommon C-Prenylated Flavonoid from Platanus acerifolia buds

Bioassay-Guided Isolation of New Flavonoid Glycosides from Platanus × acerifolia Leaves and Their Staphylococcus aureus Inhibitory Effects

“…Previous phytochemical studies on the buds [ 8 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ] and the bark [ 21 , 22 , 23 , 24 , 25 ] of P. occidentalis and P. orientalis led to the isolation and characterization of a large number of secondary metabolites, including flavonoids, glycosides, furan coumarins, terpenoids, sterols and organic acids. However, as a hybrid of these two medicinally used plants [ 4 , 11 ], P .× acerifolia is still lacking phytochemical and biological investigations to a large extent.…”

“…Reportedly, a wide range of secondary metabolites (e.g., flavonoids, glycosides, furan coumarins, terpenoids, sterols and organic acids) have been isolated from the buds [ 8 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ] and the bark [ 21 , 22 , 23 , 24 , 25 ] of P. occidentalis and P. orientalis . While being very much abundant in China, only a few flavonols have been obtained from the leaves of P. × acerifolia [ 26 ].…”