A new lignan from the seeds of Sphaerophysa salsula

A new compound, sphaerophysin A ( 1 ), together with 16 known compounds ( 2 - 17 ) were obtained from the ethanolic extract of the seeds of Sphaerophysa salsula . The structure of 1 was elucidated on the basis of spectral and chemical evidence. Compounds 2 - 17 were isolated from the plant for the first time.