ALKALOIDS 



163 



Pyrrolidine derivatives. 



Tropane derivatives. 



N- 

 CHs 



CH2COCH3 



^CHoOH 

 -0— COCH 



C6H5 



hygrin 



hyoscyamin 



Pyrrolizidine derivatives. 



H 



OH 



^^% /^\ 2 /C-CH3 

 H3C C ^CH C=0 



C^ CHa O 



o o .063 



Imidazole derivatives. 



CHc 



N- 



-CHo- 



iCaH 



V 



2^5 



O^^O 



pilocarpine 



senecionme 



Sterol derivatives. 



CH3 CH3 

 H3C 



HO 



H3C 



solanidine 



Terpene derivatives 



P^/OCOCsH 



6^15 

 OCH3 



OCOCH3 



CH2 OCH3 



OCH3 



aconitine'^ 



Purine derivatives. 

 O 



J 



H3CN 



O^^N-^N^ 

 CH3 



caffeine 



NCH3 



2 After Wiesner et al, 1959 and Bachelor et al, 1960. 



