2(3H)-Benzoxazolone and Bioisosters as “Privileged Scaffold” in the Design of Pharmacological Probes

Author(s): Jacques Poupaert, Pascal Carato, Evelina Colacino

Journal Name: Current Medicinal Chemistry

Volume 12 , Issue 7 , 2005

Become EABM
Become Reviewer
Call for Editor


The 2(3H)-benzoxazolone heterocycle and its bioisosteric surrogates (such as 2(3H)-benzothiazolinone, benzoxazinone, etc.) have received considerable attention from the medicinal chemists owing to their capacity to mimic a phenol or a catechol moiety in a metabolically stable template. These heterocycles and pyrocatechol have indeed similar pKas, electronic charge distribution, and chemical reactivity. Therapeutic applications of this template are very broad, and range from analgesic anti-inflammatory compounds (including PPAR-gamma antagonists) to antipsychotic and neuroprotective anticonvulsant compounds. High affinity ligands have been obtained also for dopaminergic (D2 and D4), serotoninergic (5-HT1A and 5-HT-2A), sigma-1 and sigma-2 receptors. Owing to the high number of positive hits encountered with this heterocycle and its congeners, 2(3H)- benzoxazolone template certainly deserves the title of “privileged scaffold” in medicinal chemistry.

Keywords: bioisosterism, privileged scaffolds, 2(3h)-benzoxazolone, 2(3h)-benzothiazolinone, mixed affinity ligands

Rights & PermissionsPrintExport Cite as

Article Details

Year: 2005
Page: [877 - 885]
Pages: 9
DOI: 10.2174/0929867053507388
Price: $65

Article Metrics

PDF: 19