Doc:FL63AG
From Metabolomics.JP
Gallocatechins refer to a subgroup of Flavan 3-ol derivatives (FL63AG). Compared to catechins, they have an additional phenolic hydroxyl group. Catechin gallates are gallic acid esters of the catechins, and (-)-Epigallocatechin gallate (EGCG) is the most abundant catechin in green tea but not in black tea.
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Structure | |||
---|---|---|---|
Name | (+)-Gallocatechin or D-Gallocatechin; GC |
(-)-Epigallocatechin or L-Epigallocatechin; EGC |
(-)-Gallocatechin or L-Gallocatechin |
B-ring stereo | ↓ | ↓ | ↑ |
3-Hydroxyl stereo | ↑ | ↓ | ↓ |
Gallate form | |||
(+)-Gallocatechin gallate or GCG | (-)-Epigallocatechin gallate or EGCG | (-)-Gallocatechin gallate | |
B-ring stereo | ↓ | ↓ | ↑ |
3-Hydroxyl stereo | ↑ | ↓ | ↓ |
Catechins | (+)-Catechin | (-)-Epicatechin | ent-Catechin |