AROMATIC COMPOUNDS 



TABLE 6. ACID COMPONENTS OF HYDROLYZABLE TANNINS 



HO, 



61 



HO-^ VcOOH 

 HO 



HO 



HO-C VcOOH 

 HO 



Gallic acid 



HO \ / 

 CH-CH 

 / \ 

 HOOCCH COOH 



CH-COOH 



m-digallic acid 



ellagic acid 



hexaoxydiphenic acid 



chebulic acid 



