Abstract
Starting from a PDE IV inhibitor hit derived from high throughput screening of the compound collection, a key pyrrolidine cyanamide pharmacophore was identified. Modifications of the pyrrolidine ring produced enhancements in cathepsin K inhibition. An X-ray co-crystal structure of a cyanamide with cathepsin K confirmed the mode of inhibition.
MeSH terms
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Animals
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Cathepsin K
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Cathepsins / antagonists & inhibitors*
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Crystallography, X-Ray
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Cyanamide / chemistry*
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Cyclization
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Cysteine Proteinase Inhibitors / chemical synthesis*
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Cysteine Proteinase Inhibitors / pharmacology
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Inhibitory Concentration 50
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Pyrrolidines / chemistry
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Structure-Activity Relationship
Substances
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Cysteine Proteinase Inhibitors
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Pyrrolidines
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Cyanamide
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Cathepsins
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Cathepsin K
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pyrrolidine