126 



TERPENOIDS AND STEROIDS 



TABLE 4. BICYLIC MONOTERPENOIDS, 

 STRUCTURE AND OCCURRENCE 



a-pinene (Pinus spp. 



thujone (Thuja spp. ) 



camphor (Cinnamonium camphora) 



borneol (Dryobalanops aromatica) 



fenchone (Foeniculum vulgar e) 



