AROMATIC COMPOUNDS 



57 



TABLE 5. SOME LIGNANS, STRUCTURES AND OCCURRENCE 



CH, W OH 



^0 



0-/ ^CH2-CH— CH2 



cubebin 

 (Piper cuheba) 



CH2-CH— CH-\ J 



OCH. 



OH 



OCH, 



OCH 



/rCH — CH — CH5 



\ 



/ 



CHj— CH — CH-^ 



pinoresinol 

 (Pinus and Picea 

 spp. ) 



podophyllotoxin 

 {Podophyllum spp. ) 



sesamin 

 {Sesamum spp. ) 



