Six new flavonolignans from Sasa veitchii (Carr.) Rehder

From dry leaves of Sasa veitchii (Carr.) Rehder, six new flavonolignans , each consisting of a tricin unit linked to a guaiacylglyceryl derivative were isolated and their structures were determined on the basis of spectroscopic data and chemical evidence. These flavonolignans were found to be three pairs of stereoisomers.