The mechanism of the irreversible inhibition of estrone sulfatase (ES) through the consideration of a range of methane- and amino-sulfonate-based compounds
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We report the results of our study into a series of simple phenyl and alkyl sulfamates and alkyl methanesulfonates as potential inhibitors of the enzyme estrone sulfatase (ES). The results of the study show that the substituted phenyl sulfamates are good irreversible inhibitors; the alkyl sulfamate compounds were found to lack inhibitory activity; whilst the large alkyl chain containing methanesulfonate-based compounds were found to possess weak reversible inhibitory activity. Using the results of the inhibition study, we postulate the probable mechanism for ES and suggest that an attack by the gem-diol is a major requirement prior to the hydrolysis of the sulfamate group, following which, attack on the active site CO occurs and which therefore leads to the production of an imine type functionality, resulting in irreversible inhibition.
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Bioorganic & Medicinal Chemistry Letters, 2002, 12 pp. 1279 - 1282