Two new secoiridoid glycosides from the leaves of Olea europaea L.

Abstract

Two new secoiridoid glycosides, oleuricines A (1) and B (2), together with five known triterpenoids, β-amyrin, oleanolic acid, erythrodiol, urs-2β,3β-dihydroxy-12-en-28-oic acid, and β-maslinic acid, were isolated from the EtOAc-soluble part of EtOH extract of the leaves of Olea europaea L. The structures of these compounds were elucidated by various spectroscopic methods, including intensive 1D, 2D NMR, and HR-ESI-MS techniques.

Keywords:

• Olea europaea L.
• secoiridoid glycosides
• oleuricine A
• oleuricine B

Acknowledgements

This work was financially supported by the ‘Hundred Talents Program’ of Chinese Academy of Sciences.