154 



TERPENOIDS AND STEROIDS 



TABLE 13. SOME BITTER PRINCIPLES, STRUCTURE AND OCCURRENCE 



lactucin (Cichorium intybus) 



tenulin (Helenium spp. ) 



columbin (Jatrorrhiza palmata) 



0-^-D-GLUCOSE 

 



0-^0 



gentiopicrin (Gentiana lutea) 



