Chemical constituents from the aerial part of Sheareria nana S. Moore

Seventeen compounds were isolated from the aerial parts of Sheareria nana S. Moore. Their structures were elucidated by spectroscopic methods and by comparison of the reported spectral data. They consisted of two sterols (1 and 12), five triterpenoids (2-6), two lignanoids (7 and 16), two diterpenoids (8 and 9), two phenylpropanoids (10 and 11), three flavonoids (13, 15 and 17) and one quinone (14). The taxonomic influence of these compounds in the position of this species within the Compositae family was discussed. As the result, the neo-clerodane diterpenes (soulidiol and soulidiol 18-O-β-D-glucoside), sterol (α-spinasterol-3-O-β-D-glucoside) and triterpenoids (urs-12-ene and olean-12-ene) might depict the taxonomic position for S. nana in Compositae and demonstrate the relationships between S. nana and some species of Astereae and Inuleae.