268 NITROGEN BASES 



Erythroxylaceae, e.g. Coca alkaloids, such ;is Cocaine and 



Tropacocaine. 

 Myrtaceae : Pelletierine, Isopelletierine, etc., from Pttnica 



granatum (pomegranate). 

 Papilionacese: Cytisine from Cytisus Laburnum ; Lupinine 



from Lupinus luteus and Lupinus niger. 

 Most of the above alkaloids have a very complex consti- 

 tution, and the formula of only one will be given, namely, 

 cocaine : 



H, CH 2 

 Cocaine 



IV. Quinoline Alkaloids. These fall into two groups : 

 (a) Cinchona alkaloids, such as Quinine, Cinchonine, etc., 



from the bark of various species of Cinchona (Rubia- 



ceae). 

 (ti) Strychnos alkaloids, such as Strychnine and Brucine 



from Strychnos mix rcmtca, S. Ignatii, etc., and Cu- 



rarine from Strychnos toxifera (Loganiaceae). 

 The constitution of quinine is represented by the following 

 formula * : 



CH 8 - CH 



CH, CH CH = CH, 



CH 8 CH, 



CHOH CH N 



-OCH 8 



Quinine 

 from which it will be seen to contain a quinoline ring. 



*This formula, though probably correct, has not yet been confirmed by 

 synthesis. 



