TERPENOIDS 



255 



Table 13-3. Triterpene composition of some giant cacti (Djerassi, 1957). 



Machaerocereus 



Nyctocereus 



treleasei 



defi-ciens 



weberi 



queretaroensis 



montanus 



thurberi 



laetus 



humilis 



dumortieri 



beneckei 



quevedonis 



gummosus 



eruca 

 guatemalensis 



thurberogenin, oxyallobetulin 



oleanolic acid, stellatogenin, treleasegenic acid, 

 thurberogenin 



traces (unidentified) 



none 



oleanolic acid, queretaroic acid 



oleanolic acid, queretaroic acid (;8-sitosterol) 



oleanolic acid, thurberogenin 



none 



traces (unidentified) 



dumortierigenin 



oleanolic acid, quertetaroic acid 



oleanolic acid, betulinic acid, longispinogenin 



gummosogenin, 

 machaeric acid, 

 machaerinic acid 



betulinic acid, stellatogenin 



none 



