Flavones from the stem of Andrographis paniculata Nees

Abstract

Chemical investigation of Andrographis paniculata Nees (Acanthaceae) resulted in the isolation of three flavones identified as 5-hydroxy-7,8, 2′-trimethoxyflavone 1, 5-hydroxy-7,8-dimethoxyflavone 2 and 5-hydroxy-7,8,2′,5′-tetramethoxyflavone 3 from the hexane, methanol and chloroform extracts of the root and stem.