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- W2016176980 abstract "Abstract Inhibition of the enzyme catechol O‐methyltransferase offers a therapeutic handle to regulate the catabolism of catecholamine neurotransmitters, providing valuable assistance in the treatment of CNS disorders such as Parkinson's disease. A series of ribose‐modified bisubstrate inhibitors of COMT featuring 2′‐deoxy‐, 3′‐deoxy‐, 2′‐aminodeoxy‐3′‐deoxy‐, and 2′‐deoxy‐3′‐aminodeoxyribose‐derived central moieties and analogues containing the carbocyclic skeleton of the natural product aristeromycin were synthesized and evaluated to investigate the molecular recognition properties of the ribose binding site in the enzyme. Key synthetic intermediates in the ribose‐derived series were obtained by deoxygenative [1,2]‐hydride shift rearrangement of adenosine derivatives; highlights in the synthesis of carbocyclic aristeromycin analogues include a diastereoselective cyclopropanation step and nucleobase introduction with a modified Mitsunobu protocol. In vitro biological evaluation and kinetic studies revealed dramatic effects of the ribose modification on binding affinity: 3′‐deoxygenation of the ribose gave potent inhibitors (IC 50 values in the nanomolar range), which stands in sharp contrast to the remarkable decrease in potency observed for 2′‐deoxy derivatives (IC 50 values in the micromolar range). Aminodeoxy analogues were only weakly active, whereas the change of the tetrahydrofuran skeleton to a carbocycle unexpectedly led to a complete loss of biological activity. These results confirm that the ribose structural unit of the bisubstrate inhibitors of COMT is a key element of molecular recognition and that modifications thereof are delicate and may lead to surprises." @default.
- W2016176980 created "2016-06-24" @default.
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- W2016176980 date "2006-03-01" @default.
- W2016176980 modified "2023-10-17" @default.
- W2016176980 title "Bisubstrate Inhibitors of Catechol <i>O</i>‐Methyltransferase (COMT): the Crucial Role of the Ribose Structural Unit for Inhibitor Binding Affinity" @default.
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- W2016176980 doi "https://doi.org/10.1002/cmdc.200500065" @default.
- W2016176980 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16892369" @default.
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