Beecham Group Plc

Beecham Pharmaceuticals (pte) Limited

Beecham Group P.l.c. of Beecham House

Ian Hughes

Roger Edward Markwell

Robert William Ward

Stephen A Smith

Laramie Mary Gaster

Novel compounds of formula (I), and pharmaceutically acceptable salts thereof; their preparation; compositions containing them; and their use in the treatment of conditions in which degradation of connective tissue and other proteinaceous components of the body occurs: ##STR1## in which, R.sub.1 is --OH; alkoxy; aryloxy or aralkyloxy in each of which the aryl group is optionally substituted; --NR.sub.6 R.sub.7, where each of R.sub.6 and R.sub.7 is independently hydrogen or alkyl, or R.sub.6 and R.sub.7 together with the nitrogen atom to which they are bonded form a 5-, 6- or 7-membered ring with an optional oxygen or sulphur atom or an optionally substituted second nitrogen atom in the ring; or a group:

Lactam derivatives

Novel compounds of formula (I), salts, solvates and hydrates thereof: ##STR1## in which: R.sub.1 and R.sub.2 are independently hydrogen; alkyl; alkoxy; halogen; or CF.sub.3 ;

Dipeptide collagenase inhibitors

Novel compounds of the formula (I), processes for their preparation and their use as collagenase inhibitors are described: ##STR1## in which R.sub.1 is hydroxy; alkoxy; aryloxy; aralkyloxy; --NR.sub.6 R.sub.7 where R.sub.6 and R.sub.7 are hydrogen or alkyl, or R.sub.6 and R.sub.7 together with the N-atom to which they are bonded form a 5- to 7-membered ring with an optional heteroatom; --NHCH(R.sub.8)COR.sub.9 is hydrogen; alkyl optionally substituted by hydroxy, alkoxy, --NR.sub.6 R.sub.7, quanidine; CO.sub.2 H, CONH.sub.2, SH, or S-alkyl; or CH.sub.2 --AR where Ar is optionally substituted aryl; and R.sub.9 is hydroxy, alkoxy or --NR.sub.6 R.sub.7.

Thiol carboxylic acid derivatives and their use as collagenase inhibitor

Novel compounds of the formula (I), a process for their preparation and their use as collagenase inhibitors are described: ##STR1## in which, R.sub.1 is hydrogen, alkyl, or optionally substituted aryl;

Novel compounds

Novel compounds of the formula (I), processes for their preparation and their use as collagenase inhibitors are described: ##STR1## in which R.sub.1 is hydroxy; alkoxy; aryloxy; aralkyloxy; --NR.sub.6 R.sub.7 where R.sub.6 and R.sub.7 are hydrogen or alkyl, or R.sub.6 and R.sub.7 together with the N-atom to which they are bonded form a 5- to 7-membered ring with an optional heteroatom; --NHCH(R.sub.8)COR.sub.9 where R.sub.8 is hydrogen; alkyl optionally substituted by hydroxy, alkoxy, --NR.sub.6 R.sub.7, quanidine, CO.sub.2 H, CONH.sub.2, SH, or S-alkyl; or CH.sub.2 -AR where Ar is optionally substituted aryl; and R.sub.9 is hydroxy, alkoxy or --NR.sub.6 R.sub.7.

Thiol carboxylic acid derivatives and their use as colagenase inhibitors

Compounds of the formula (I): ##STR1## wherein: X is NR wherein R is hydrogen, C.sub.1-6 alkyl; oxygen; sulphur; SO; or SO.sub.2 ; or R and R.sub.3 taken together are C.sub.4-6 polymethylene;

Pharmacologically useful pyrazolopyridines

A compound of the formula (1) or a salt or solvate thereof: ##STR1## in which: R.sub.0 is hydrogen or C.sub.1-6 alkyl;

Certain anti-inflammatory pyrazolo [4,3-b] pyridine 7-amines

Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein: X is NR wherein R is hydrogen or C.sub.1-6 alkyl, oxygen, sulphur, SO or SO.sub.2 ;

Growing community of inventors

Harlow, United Kingdom

Ian Hughes