Chemical constituents from the bark of Platanus acerifolia Wild.

Seven compounds were isolated from the bark of Platanus acerifolia Wild. , and identified as betulinic acid( 1 ), platanic acid( 2 ), β-sistosterol( 3 ), 3-O-acetylbetulin aldehyde( 4 ), 3-O-acetyl oleanolic acid( 5 ), 4′, 5, 7-trihydroxy-8-prenylflavone( 6 )and platanone B( 7 ). Compound 6 was isolated from this genus for the first time; compounds 2 - 5 were isolated from this plant for the first time; and compound 7 was a novel natural product.