COX-1/COX-2 inhibitors based on the methanone moiety
作者:G Dannhardt
DOI:10.1016/s0223-5234(01)01330-7
日期:2002.2
This paper focuses on the synthesis and the in vitro testing of dual COX-1/COX-2 inhibitors. Starting from structures of non-steroidal anti-inflammatory drugs (NSAIDs) the diaryl methanone element was chosen as a lead. Modifications were carried out on this scaffold to obtain potent inhibitors of the COX enzymes. The N-(2-aroylphenyl)sulphonamides and -amides were studied in detail, and to consolidate the data evaluated the corresponding 3- and 4-regioisomers were also investigated. The potency and the enzyme selectivity were varied by structural modifications of the lead. (C) 2002 Published by Editions scientifiques et medicales Elsevier SAS.
There are provided compounds of the general formula ##STR1## in which Ar represents a phenyl group which is unsubstituted or substituted by a halogen atom or a lower alkyl group, or represents a thienyl group, R.sub.1 represents a hydrogen or halogen atom or, when the Ar--CO-- grouping is in the meta-position with respect to the nitrogen atom, a lower alkyl group, R.sub.2 represents a hydrogen atom, or a lower alkyl or an acyl group, and R.sub.3 represents a hydrogen atom, a lower alkyl or a phenyl group and a physiologically acceptable salt thereof. The compounds of the general formula I and their salts have therapeutic utility, especially as analgesics.