Chemical Constituents from the Twigs and Leaves of Endospermum chinense

To study chemical constituents of Endospermum chinense,thirteen known compounds were isolated from the95% ethanol extract of E. chinense with different chromatographic methods. Their structures were identified as pubinernoid A( 1),( E)-linalool-1-oic acid( 2),( 6S)-dehydrovomifoliol( 3),3α-hydroxy-5,6-epoxy-7-megastigmen-9-one( 4),oleanolic acid( 5),3-ketooleanolic acid( 6),3-oleana-9( 11),12-dien-28-oic acid( 7),mangiferonic acid( 8),altissimanin C( 9),7β-hydroxy-β-sitosterol( 10),syringaresinol( 11),ficusesquilignan A( 12),ficusesquilignan B( 13).Compounds 1-4 and 7-13 were obtained from the genus Endospermum for the first time.