56 



AROMATIC COMPOUNDS 



TABLE 4. SOME FURANO- AND PYRANOCOUMARINS, 

 STRUCTURES AND OCCURRENCE 



psoralen 



(Psoralen corylifolia) 



_ angelicin 



(Archangelica officinalis) 



CH3O 



CHo-CH^^O 



^ I 

 CHo 



0^0 



peucedanin 

 (Peucedanum officinale) 



seselin 



(Seseli indicum) 



xanthoxyletin 

 (Xanthoxylum americanum) 



