A new lignan from the seeds of Arctium lappa

Abstract

A new compound, neoarctin A (1), together with nine known compounds (2–10), were obtained from the ethanolic extract of the seeds of Arctium lappa. The structure of 1 was elucidated on the basis of spectral and chemical evidence.

Keywords:

• Arctium lappa
• Seeds
• Lignans
• Neoarctin A

Acknowledgements

The authors are grateful to the Analytical Group of the Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences, for the spectral measurements.