Abstract
Structure-based drug design enabled the discovery of 8, HTL22562, a calcitonin gene-related peptide (CGRP) receptor antagonist. The structure of 8 complexed with the CGRP receptor was determined at a 1.6 Å resolution. Compound 8 is a highly potent, selective, metabolically stable, and soluble compound suitable for a range of administration routes that have the potential to provide rapid systemic exposures with resultant high levels of receptor coverage (e.g., subcutaneous). The low lipophilicity coupled with a low anticipated clinically efficacious plasma exposure for migraine also suggests a reduced potential for hepatotoxicity. These properties have led to 8 being selected as a clinical candidate for acute treatment of migraine.
MeSH terms
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Animals
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Binding Sites
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Calcitonin Gene-Related Peptide Receptor Antagonists / chemical synthesis
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Calcitonin Gene-Related Peptide Receptor Antagonists / metabolism
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Calcitonin Gene-Related Peptide Receptor Antagonists / pharmacology*
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Calcitonin Gene-Related Peptide Receptor Antagonists / toxicity
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Dogs
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Drug Design
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Humans
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Indazoles / chemical synthesis
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Indazoles / metabolism
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Indazoles / pharmacology*
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Indazoles / toxicity
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Macaca fascicularis
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Migraine Disorders / drug therapy
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Molecular Docking Simulation
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Molecular Structure
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Rats
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Receptors, Calcitonin Gene-Related Peptide / metabolism*
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Spiro Compounds / chemical synthesis
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Spiro Compounds / metabolism
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Spiro Compounds / pharmacology*
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Spiro Compounds / toxicity
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Structure-Activity Relationship
Substances
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Calcitonin Gene-Related Peptide Receptor Antagonists
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Indazoles
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Receptors, Calcitonin Gene-Related Peptide
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Spiro Compounds