Sinapic acid derivatives from the seeds of Raphanus nussatirus L.

Abstract

A new disulfide glycoside, raphthioglucoside (1), and a new sinapic acid derivative, sinapic acid 5-hydroxymethylfurfural ester (2), together with sinapic acid (3) have been isolated from the seeds of Raphanus nussatirus L. The structures of compounds 1-3 were determined based on chemical analysis and spectroscopic methods (UV, 1D and 2D NMR, HRFABMS, HREIMS and elemental analysis).

Keywords:

• Raphanus nussatirus L
• Disulfide glycoside
• Sinapic acid derivatives

Acknowledgements

This work was financially supported by the National Nature Science Foundation of China (NO. 90209041). The authors were grateful to Dr. Wangwei for NMR and HRFABMS measurements.