Two novel sulfur compounds from the seeds of Raphanus sativus L.

Abstract

The seeds of Raphanus sativus L., known as Lai-fu-zi in traditional Chinese Medicine, are always roasted before clinical use for avoiding nausea. During an investigation of the chemical difference between roasted and pre-roasted products, two novel sulfur-containing compounds, which mainly existed in the pre-roasted products, were isolated. Their structures and absolute configurations were established by spectroscopic and X-ray diffraction analysis.

Keywords:

• Raphanus sativus L
• sulfur-containing compound
• processing Chinese medicine

Acknowledgements

We would like to thank Dr Victor Wray (Helmholtz Centre for Infection Research, Germany) for his helpful discussion on NMR. This work was financially supported by the National Natural Science Foundation of China (NSFC 30672665).