ALKALOIDS 



257 



CH2'~~CH2 



CHg CHCOOH 



(HY&RINE) 



n 



CHx-CH, 



HOC CHCOOH 



H NH2 

 CLUTAMIC ACID 



-N 



O (ATROPINE) 





(NECINES) 



N' 



(COCAINE) 



J\ 



LYSINE 



CH2 CH2 



CH9 CHCOOH 



X \ 



NHg NH2 



O 



NiCOirNIC k, >'*'^«^«"^^^ 



ACID C^ ■* 



(CONIINE) 



(PSEUDOPELLETIERINE) 



(sparteine) 



(LUPININE) 



CYTISINE) 



FIGURE 12-2: PATHWAYS OF ALKALOID BIOSYNTHESIS 



