Efficient syntheses of 2-(3′,5′-difluorophenyl)-3-(4′-methylsulfonylphenyl)cyclopent-2-enone, a potent COX-2 inhibitor

Autor: Nathalie Ouimet, Feng Xu, Cameron Black, Paul J. Reider, Edward J. J. Grabowski, Peppi Prasit, R. D. Tillyer, Dalian Zhao, Cheng-yi Chen
Rok vydání: 1999
Předmět:
Zdroj: Tetrahedron. 55:6001-6018
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(99)00274-4
Popis: 2-(3′,5′-Difluorophenyl)-3-(4′-methylsulfonylphenyl)cyclopent-2-enone (1) displays high selectivity and potency against COX-2. Three efficient syntheses of this diarylcyclopentenone are described. The first approach employs a Suzuki coupling reaction as the key step while the second synthesis features an intramolecular Friedel-Crafts acylation. The third, and preferred route to this compound involves a sequential malonate alkylation and acylation and ring-closure sequence.
Databáze: OpenAIRE