Chemical constituents of Vernonanthura crassa (Vell.) H. Rob. (Asteraceae)

Phytochemical study of aerial parts of Vernonanthura crassa (Vell.) H. Rob. afforded the known compounds β–sitosterol (1), stigmasterol (2), lupeol (3), α-amyrin (4), β-amyrin (5), 8-α-methacryloyloxy-10-α-hydroxy-13-O-methylhirsutinolide (6), loliolide (7), vitexin (8) and 2-(S)/2-(R)-eriodictyol-7-O-glucoronide (9). The structures of the isolated compounds were established with basis on their spectroscopic data and comparison with literature. Compounds 6, 7 and 9 are being isolated for the first time from Vernonanthura genus.