Phenolic compounds from Forsythia leaves. II.

Abstract
The phenolic compounds in leaves of four Forsythia species were investigated Phillygenin (1), (+)-pinoresinol (2)m phillyrin (3), (+)-pinoresino-.beta.-D-glucoside (4), forsythiaside (11) and rutin (13) were isolated from Forsythis eruropaea Degen et Bald, arctigenin (5), matairesinol (6), arctiin (7), matairesinoside (8), acteoside (12) and 13 from F. ovata Nakai, and (+)-pinoresinol monomethyl ether (9), (+)-pinoresinol monomethyl ether-.beta.-D-glucoside (10), compounds 1-4, 12 and 13 from F. japonica Makino and F. giraldiana Liel. The distributions of lignans, lignan glucosides, phenylpropanoids and flavonoids in seven Forsythia species investigated so far (F. suspensa, F. viridissima, F. koreana, F. europaea, F. japonica, F. ovata and F. giraldiana) were compared.