(+/-)-5-hydroxy-1,7-bis(phenyl)-3-heptanone

Syringaresinol is a lignan extracted from the sap of Lobelia longifolia with anti-inflammatory activity. syringaresinol causes vasodilation and enhances NO production through phosphorylation and dimerization of endothelial NO synthase.

Kurarinone, a flavanoid derived from shrub Sophora flavescens,Kurarinone exhibits anti-tumor, estrogenic, and anti-inflammatory activities, it also shows strong inhibitory effect on immune responses.?Kurarinone may ameliorate chronic inflammatory skin diseases through the suppression of pathogenic CD4(+) T-cell differentiation and the overall immune response.