following two lactones were obtained in both (R)-(+) and (S)-(−) enantiomeric forms, β-piperonyl- and β-veratryl-γ-butyrolactones and respectively. These lactones were used as key-intermediates for the syntheses of 17 optically active lignans and lignoids, such as (-1-dimethylmatairesinol (−)-, (−)-kusunokinin (−)- and (+)-diniethylisolariciresinol (+)-.