Three new constituents from the parasitic plant balanophora laxiflora

Abstract

Three new constituents (1-3) were isolated from the whole plant of Balanophora laxiflora. Their chemical structures were elucidated by extensive analysis of high-resolution electrospray ionization mass spectrometry and nuclear magnetic resonance spectroscopy. Absolute configurations of new compounds were determined by circular dichroism spectra and modified Mosher's method. The isolated compounds weakly inhibited on both NO production and COX-2 mRNA expression in RAW264.7 macrophages.