268 



NITROGEN BASES 



Erythroxylaceae, e.g. Coca alkaloids, such as Cocaine and 



Tropacocaine. 

 Myrtaceae : Pelletierine, Isopelletlerine, etc., from Punka 



granatum (pomegranate). 

 Papilionaceae: Cytisine (rom Cv^isus Ladurnuvi ; Lupinine 



from Lupinus hiteiis 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 OCOCgHs 



\ / 



c 



/ \ 



CHo CHCOOCH3 



II 



CH., CH„ 

 \/ 



NCH; 



CH2— CH2 



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- 



ceas). 

 {U) Strychnos alkaloids, such as Strychnine and Brucine 



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



rarine from Strychnos toxifera (Loganiaceae). 

 The constitution of quinine is represented by the following 

 formula * : — 



CH„ 



-CHOH— CH- 



CH 



/ \ 

 CHj CH— CH = CHg 



CH2 CH2 



\ / 



N 



-OCH, 



Quinine 



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



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

 synthesis. 



