Four new monoterpenoids from the whole plants of Valeriana stenoptera

Abstract

Four new monoterpenoids, including two new acyclic monoterpenoids (2R, 6R)-2, 6-dimethyl-8-isovaleroxyoctan-1-ol (1) and (2S, 6S)-2, 6-dimethyl-8-isovaleroxyoctan-1-ol (2), as well as two new iridoids stenopterins F-G (3 and 4), together with fifteen known compounds (5–19), were isolated from whole dried material of Valeriana stenoptera. Stenopterin F was the first reported iridoids with n-butoxyl in the Valerianaceae family. The structures of new compounds were established on the basis of extensive spectroscopic analysis.

Keywords:

• Valerianaceae
• Valeriana stenoptera
• acyclic monoterpenoids
• iridoids
• triterpenoids

Acknowledgements

The authors are grateful to the staffs of the analytical group at the State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, for measuring the spectral data.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was financially supported by grants from National Natural Science Foundation of China (31860092, 31760100 and 81860760), Yunnan Province (2018FF001-015) and Educational Commission of Yunnan Province (2016zzx117).