258 



NITROGEN BASES 



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



Tropacocaine. 

 Myrtacere : Pelletierine, Isopelletierine, etc., from Punica 



g7-anatuin (pomegranate). 

 Papilionaceae: Cytisine [rom Cyiz'sus Ladurnum ; 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 OCOC«H. 



CH2 CHCOOCH3 



NCH3 



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- 



ceae). 



{])) Strychnos alkaloids, such as Strychnine and Brucine 



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



rarine from Strychnos toxifera (Loganiaceae). 



The constitution of quinine is represented by the following 



formula * : — 



CHj CH 



/ \ 

 CHo CH— CH = CH„ 



11 



CH2 CH2 



CHOH— CH- 



-N 



-OCH, 



Quinine 



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



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

 synthesis. 



