FIELD OF THE INVENTION
This invention relates to the isolation of two compounds namely (-)- Matairesinol (4,4.sup.1 -dihydroxy-3, 3.sup.1 -dimethoxylignan-9, 9.sup.1 -olide) and (-) wikstromol (4,4.sup.1,8-trihydroxy-3, 3.sup.1 -dimethoxyliganan-9, 9.sup.1 -olide) from the plant source Cedrus