alexa Mechanistic aspects of the tyrosinase oxidation of hydroquinone.


Journal of Pigmentary Disorders

Author(s): Ramsden CA, Riley PA, Ramsden CA, Riley PA

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Abstract Contradictory reports on the behaviour of hydroquinone as a tyrosinase substrate are reconciled in terms of the ability of the initially formed ortho-quinone to tautomerise to the thermodynamically more stable para-quinone isomer. Oxidation of phenols by native tyrosinase requires activation by in situ formation of a catechol formed via an enzyme generated ortho-quinone. In the special case of hydroquinone, catechol formation is precluded by rapid tautomerisation of the ortho-quinone precursor to catechol formation. Copyright © 2014 Elsevier Ltd. All rights reserved. This article was published in Bioorg Med Chem Lett and referenced in Journal of Pigmentary Disorders

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