Abstract
The genus Magnolia plays a role in American as well as in Asian medicinal systems such as TCM or Japanese Kampo medicine [1, 2]. Main lignan constituents in the seeds of the north american Magnolia grandiflora are honokiol (1) and 4'-O-methyl-honokiol. They are known to possess anti-inflammatory activities with COX-2 inhibitory activity (IC50) of about 0.1 to 3 μM.