C₁₉-Diterpenoid alkaloids from Delphinium umbrosum

Abstract

Three new C₁₉-diterpenoid alkaloids, umbrosumines A–C (1–3), and 11 known compounds (4–14) were isolated from the roots of Delphinium umbrosum. Their structures were elucidated on the basis of the spectroscopic data interpretation.

Keywords:

• Delphinium umbrosum
• C₁₉-diterpenoid alkaloids
• umbrosumine A
• umbrosumine B
• umbrosumine C

Acknowledgements

We are grateful to the National Natural Science Foundation of China (No. 30873147) for the financial support of this research.