Two new phenylpropanoid esters of rhamnose from Lagotis yunnanensis

Abstract

Two new phenylpropanoid esters of rhamnose, lagotoside B (1) and lagotoside C (2), together with three known compounds (3–5), were isolated from Lagotis yunnanensis. The structures of 1 and 2 were elucidated by spectroscopic methods. Compounds 3–5 have been obtained from this species for the first time.

Keywords:

• Scrophulariaceae
• Phenylpropanoids
• Lagotoside B
• Lagotoside C

Acknowledgements

This work was supported by funds from the Unida Research Institute of the Unida Company. We are grateful to the faculty of the instrument group of Kunming Institute of Botany, Chinese Academy of Sciences for the measurement of all the spectra, and to Mr A. Dou for the identification of the plant material.