Anti-inflammatory Prenylated Flavonoids from Helminthostachys zeylanica

July 28, 2017

Title

Anti-inflammatory Prenylated Flavonoids from Helminthostachys zeylanica

Author

Li-Hua Su, Yan-Ping Li, Hong-Mei Li, Wei-Feng Dai, Dan Liu, Lang Cao, Rong-Tao Li

Year

2016

Journal

Chemical and Pharmaceutical Bulletin

Abstract

Two new [neougonins A (1) and B (2)] and nine known prenylated flavonoids were isolated from the whole plants of Helminthostachys zeylanica. The structures of the new isolates were elucidated by extensive NMR techniques, including one and two dimensional (1D)- and (2D)-NMR experiments, as well as comparison with spectroscopic data of known analogous compounds. Moreover, compound 1 inhibited lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.7 cells with an IC50 value of 3.32 µM.

Instrument

J-715

Keywords

Circular dichroism, Absolute configuration, Pharmaceutical