Lignanoids from Solanum lyratum

In the present study, we aimed to investigate the chemical constituents from Solanum lyratum.The constituents were separated by column chromatography on silica gel, Sephadex LH-20 and preparative HPLC. Their structures were elucidated by spectroscopic means. A total of 13 compounds were isolated fromS. lyratumand identified as syringin (1), (+)-isolariciresinol (2), (+)-syringaresinol (3), leptolepisol D (4),(–)-secoisolariciresinol (5), (–)-epi-syringaresinol (6),aviculin(7), zhebeiresinol(8), ciwujiatone(9),(–)-(7′S,8S,8′R)-4,4′-dihydroxy-3,3′,5,5′-tetramethoxy-7′,9-epoxylignan-9′-ol-7-one(10),(+)-lariciresinol(11), (+)-pinoresinol (12) and (+)-medioresinol (13). All the compounds were isolated from S. lyratumfor the first time.