Chemical constituents of the roots of Scorzonera divaricata and their chemotaxonomic significance

• Published in: Biochemical systematics and ecology 2020-12, Vol.93, p.104135, Article 104135
• Main Authors: Meng, Xian-Hua, Yang, Yong-Jin, Gong, Yuan, Zhu, Ying
• Format: Article
• Language: English
• Subjects: Asteraceae; Chemical constituents; Chemotaxonomy; Scorzonera divaricata
• ISSN: 0305-1978; 1873-2925
• DOI: 10.1016/j.bse.2020.104135

The phytochemical study of the roots of Scorzonera divaricata Turcz led to the isolation of 27 compounds, including eight sterols (1–8), one lignan (9), two cumarins (10, 11), five phenylpropanoids (12–16), six benzene derivatives (17–22), methyl-β-D-fructofuranoside (23), monolinolein (24), and three aliphatic acids (25–27). The structures of isolated compounds were identified using NMR and ESI-MS spectroscopic methods and comparing them with those previously reported. Except for β-daucosterol (8), scopoletin (10) and caffeic acid (16) from S. divaricata, this is the first report of the other 24 compounds from S. divaricata. Among them, eleven compounds (2–6, 11, 17, 19, 20, 23, 25) were reported from genus Scorzonera for first time, suggesting that they could be used to distinguish S. divaricata from the other species of Scorzonera. Furthermore, the chemotaxonomic significance of isolated compounds from S. divaricata has also been discussed. •27 compounds were isolated from Scorzonera divaricata.•24 compounds were first reported from S. divaricata.•9 compounds were first reported from the genus Scorzonera.•Chemotaxonomic relationships among S. divaricata, the genus Scorzonera and the family Asteraceae were discussed.