A new acylated flavonol glycoside from the aerial parts of Cardamine tangutorum

Abstract

A new acylated flavonol glycoside, kaempferol-3-O-β-d-(2-feruloylglucopyranosyl) (1 → 6)-[β-d-glucopyranosyl(1 → 2)]-β-d-glucopyranoside, named tangutorumoside A (1), together with 12 known compounds, was isolated from 50% acetone extract of Cardamine tangutorum. Their structures were elucidated by NMR and MS experiments. In addition, compound 1 could promote the proliferation of splenic lymphocytes and thymic lymphocytes with ConA in vitro.

Keywords:

• Cardamine tangutorum
• acylated flavonol glycoside
• Cruciferae

Acknowledgments

This work was financially supported by the Ministry of Education of China (2003078) and program for Science & Technology Innovation Talents in Universities of Henan Province (2010HASTIT014). We thank Prof. Cheng-Ming Dong (Henan University of Traditional Chinese Medicine, China) for the original plant collection and identification.