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The enzyme pyrogallol hydroxytransferase uses benzene-1,2,3,5-tetrol and benzene-1,2,3-triol (pyrogallol), whereas its two products are benzene-1,3,5-triol ...
Pyrogallol was also used as a developing agent in the 19th and early 20th centuries in black-and-white developers. Hydroquinone is more commonly used today. Its use is largely historical except for special purpose applications.
Hydroxyquinol is a common intermediate in the biodegradation of many aromatic compounds. These substrates include monochlorophenols, dichlorophenols, and more complex species such as the pesticide 2,4,5-T. [5]
C 6 H 3 (OH) 3 + 3 NH 2 OH → (CH 2) 3 (C=NOH) 3 + 3 H 2 O. But it behaves also like a benzenetriol as the three hydroxyl groups can be methylated to give 1,3,5-trimethoxybenzene. [4] For the neutral compound, the keto tautomers are undetectable spectroscopically. Upon deprotonation, the keto tautomer predominates. [5]
Thus, the two substrates of this enzyme are 1,2,3,5-tetrahydroxybenzene and 1,2,3-trihydroxybenzene (pyrogallol), whereas its two products are 1,3,5-trihydroxybenzene (phloroglucinol) and 1,2,3,5-tetrahydroxybenzene. This enzyme participates in benzoic acid degradation via CoA ligation.
It is a metabolite in the degradation of 3,4,5-trihydroxybenzoate (gallic acid) by Eubacterium oxidoreducens. [ 1 ] The enzyme pyrogallol hydroxytransferase uses 1,2,3,5-tetrahydroxybenzene and 1,2,3-trihydroxybenzene ( pyrogallol ), whereas its two products are 1,3,5-trihydroxybenzene ( phloroglucinol ) and 1,2,3,5-tetrahydroxybenzene.
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Gallic acid (3,4,5-trihydroxybenzoic acid) Phloroglucinol carboxylic acid (2,4,6-trihydroxybenzoic acid) O-methylated trihydroxybenzoic acids are: Eudesmic acid;