期刊
BIOCONJUGATE CHEMISTRY
卷 13, 期 5, 页码 1112-1118出版社
AMER CHEMICAL SOC
DOI: 10.1021/bc0200327
关键词
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BIA 3-202, 1-(3,4-dihydroxy-5-nitrophenyl)-2-phenylethanone 3, is a novel, reversible, and tight-binding peripheral inhibitor of the enzyme catechol-O-methyltransferase (COMT), which is currently under clinical evaluation for the treatment of Parkinson's disease as an adjunct to current L-Dopa/peripheral decarboxylase inhibitor therapy. Chemically pure, well-characterized reference standards of conjugates of 3 were required for investigation of the routes of metabolism in several animal species (including humans) and for pharmacokinetic studies. The lack of suitable literature precedents for efficient, regioselective synthesis of nitrocatechol conjugate metabolites prompted us to develop efficient and highly selective chemical preparations of O-glucuronide and O-sulfate conjugates of 3 such that multigram. quantities of excellent purity can now be conveniently synthesized. It is anticipated that these procedures could be applied to the synthesis of conjugates of other COMT inhibitors, also based on the 3-nitrocatechol pharmacophore.
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