FURTHER FATE OF AMINO ACIDS 105 

 OH OH 



by oxidative 

 deamination 



CH a 



CHNH, 

 I 

 COOH 



(Tyrosine) 



p.oxyphenyl 



amino-propionic 



acid 



oxidation 

 and 



rearrange- 

 ment 



CH a 



C= O 

 I 

 COOH 



(Ketone acid) 



p.oxyphenyl 



pyroracemic 



acid 



by 

 CO 3 



cleavage 



Hydroquinone 

 pyroracemic acid 



