Phenolic Compounds from the Immature Fruits of Solanum nigrum L.

Solanum nigrum L. has been traditionally used as traditional Chinese medicine and food all over the world. Phytochemical investigations of immature fruits S. have carried out five coumarins (1-5) phenolic compounds (6-11) were obtained. Their structures elucidated on basis spectroscopic chemical methods, including IR, MS, 1H 13C-NMR. They identifies 6,7-dimethoxycoumarin (1), 6-methoxy-7-hydroxycoumarin (2), 6,8-dimethoxycoumarin (3), (4), umbelliferone (5), vanillin (6), vanillic acid (7), syringic aldehyde (8), isovanillic (9), ethyl 3,4-dihydroxybenzoate (10), 3,4-dihydroxyphenylacetate (11).