作者:Regis Leung-Toung、Jolanta Wodzinska、Wanren Li、Jayme Lowrie、Rahul Kukreja、Denis Desilets、Khashayar Karimian、Tim Fat Tam
DOI:10.1016/j.bmc.2003.09.040
日期:2003.12
inhibitor in this series. The enhanced inhibitory potency of 3a is a consequence of its increased enzyme binding affinity (lower K(i)) rather than its increased intrinsic reactivity (higher k(i)). In addition, 3a is inactive againstCathepsin S, is a poor inhibitor of Cathepsin H and is >100-fold more selective for Cat B over papain.
Thiols are trapped, and converted to disulfide compounds, by a process of reacting them with compounds containing a 1,2,4-thiadiazole ring structure carrying a substituent at position 3 of the thiadiazole ring, and being unsubstituted at position N-2. The process is useful pharmacologically, in inhibiting certain thiol-containing enzymes such as H.sup.+ /K.sup.+ -ATPase (the proton pump), and industrially, in selective removal of thiol compounds from gas or liquid mixtures.
Thiadiazole compounds useful as inhibitors of cysteine activity dependent enzymes
申请人:Apotex Inc.
公开号:US06468977B1
公开(公告)日:2002-10-22
Novel 1,2,4-thiadiazole compounds are provided, which are effective as inhibitors of cysteine activity-dependent enzymes and in particular of cysteine proteases. The compounds are useful in treating acne by inhibition of transglutaminase, common cold by inhibition of human rhinovirus 3C protease and inflammatory joint disease by inhibition of cathepsins. The compounds of the present invention are 3,5-disubstituted 1,2,4-thiadazole of the general formula (I):
where Z is a nitrogen containing group with recognition sequence for the enzyme and Y is a substituent that tunes the reactivity of the inhibitor towards the thiol group of the cysteine activity-dependent enzyme. The Y group may also serve in recognition.
The present invention relates to compounds of the formula (I) and pharmaceutically acceptable salts, solvates or tautomers therof, to processes for the preparation of, intermediates used in the preparation of, and compositions containing such compounds, and the uses of such compounds, in particular for the treatment of pain.
Thiadiazole compounds useful as inhibitors of cysteine activity
申请人:Apotex Inc.
公开号:US06162791A1
公开(公告)日:2000-12-19
Novel 1,2,4-thiadiazole compounds are provided, which are effective as inhibitors of cysteine activity-dependent enzymes and in particular of cysteine proteases. The compounds are useful in treating acne by inhibition of transglutaminase, common cold by inhibition of human rhinovirus 3C protease and inflammatory joint disease by inhibition of cathepsins. The compounds of the present invention are 3,5-disubstituted 1,2,4-thiadazole of the general formula (I): ##STR1## where Z is a nitrogen containing group with recognition sequence for the enzyme and Y is a substituent that tunes the reactivity of the inhibitor towards the thiol group of the cysteine activity-dependent enzyme. The Y group may also serve in recognition.