Gallates, chemical structure

Suzuki, M., Sano, M., Yoshida, R., Degawa, M., Miyase, T., and Maeda-Yamamoto, M., Epimerization of tea catechins and 0-methylated derivatives of (—)-epigallocatechin-3-0-gallate relationship between epimerization and chemical structure, J. Agric. Food Chem., 51, 510, 2003. 

Figure 6.3 Chemical structures of curcuminoids, resveratrol, and gallates.

Figure 4. Chemical structures of different alkyl gallates.

FIGURE 15.3. Chemical structure of the four major black tea theaflavins. These Include (a) theaflavins (TF1), (b) Theaflavln-3-gallate (TF2a), (c) Theaflavln-3 -gallate (TF2b) and (d) Theaflavln-3,3 -gallate. 

FIGURE 14.1 Chemical structures of gallic acid (a) and alkyl gallates (b). 

H. Ikawa, T. Tsurumi, M. Ishimori, K. Urabe and S. Udagawa, Chemical composition and crystal structure of p-alumina type R -gallate (R = K, NH4 ), j. Solid State Chem. 60 (1985) 51-61. 

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