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Dibasic inhibitors of human mast cell tryptase. Part 2: structure-activity relationships and requirements for potent
K D Rice1, V R Wang, A R Gangloff
1Department of Medicinal Chemistry, Axys Pharmaceuticals, Inc., South San Francisco, CA 94080, USA.
Abstract:
Detailed structure activity relationships (SARs) for a series of dibasic human tryptase inhibitors are presented. The structural requirements for potent inhibitory activity are remarkably broad with a range of core template modifications being well tolerated. Optimized inhibitors demonstrate potent anti-asthmatic activity in a sheep model of allergic asthma. APC-2059, a dibasic tryptase inhibitor with subnanomolar activity, has been advanced to phase II clinical trials for the treatment of both psoriasis and ulcerative colitis.
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