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The discovery and optimization of a novel series of PTHR1 antagonists are described. Starting from known PTHR1 antagonists, we identified more potent 1,4-benzodiazepin-2-one derivatives by means of a scaffold-hopping approach. The representative compound 23 (DS08210767) exhibited nanomolar-level PTHR1 antagonist activity and potential oral bioavailability in a pharmacokinetic study.
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http://dx.doi.org/10.1016/j.bmcl.2019.07.052 | DOI Listing |
Curr Drug Targets
May 2025
Department of Molecular Medicine, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL33458, USA.
Diseases affecting bone encompass a spectrum of disorders, from prevalent conditions such as osteoporosis and Paget's disease, collectively impacting millions, to rare genetic disorders including Fibrodysplasia Ossificans Progressiva (FOP). While several classes of drugs, such as bisphosphonates, synthetic hormones, and antibodies, are utilized in the treatment of bone diseases, their efficacy is often curtailed by issues of tolerability and high incidence of adverse effects. Developing therapeutic agents for bone diseases is hampered by the fact that numerous pathways regulating bone metabolism also perform pivotal functions in other organ systems.
View Article and Find Full Text PDFJ Am Chem Soc
September 2023
Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States.
We have applied an underexplored backbone modification strategy to generate new analogues of peptides that activate two clinically important class B1 G protein-coupled receptors (GPCRs). Most peptide modification strategies involve changing side chains or, less commonly, changing the configuration at side chain-bearing carbons (i.e.
View Article and Find Full Text PDFAnticancer Drugs
April 2021
Tufts Medical Center, Boston, Massachusetts, USA.
Patients with advanced breast cancer often develop bone metastases. Treatment is limited to palliative care. Parathyroid hormone (PTH)/parathyroid hormone-related peptide (PTHrP) antagonists for bone metastases failed clinically due to short half-life and inadequate concentration in bone.
View Article and Find Full Text PDFBioorg Med Chem
June 2020
End-Organ Disease Laboratories, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan.
Structural modification of a 1,4-benzodiazepin-2-one-based PTHR1 antagonist 5, a novel type of PTHR1 antagonist previously synthesized in our laboratories, yielded compound 10, which had better chemical stability than compound 5. Successive optimization of the lead 10 improved aqueous solubility, metabolic stability, and animal pharmacokinetics, culminating in the identification of DS37571084 (12). Our study paves the way for the discovery of novel and orally bioavailable PTHR1 antagonists.
View Article and Find Full Text PDFJ Bone Miner Res
March 2020
Endocrine Unit, Massachusetts General Hospital, and Harvard Medical School, Boston, MA, USA.
Jansen's metaphyseal chondrodysplasia (JMC) is a rare disease of bone and mineral ion physiology that is caused by activating mutations in PTHR1. Ligand-independent signaling by the mutant receptors in cells of bone and kidney results in abnormal skeletal growth, excessive bone turnover, and chronic hypercalcemia and hyperphosphaturia. Clinical features further include short stature, limb deformities, nephrocalcinosis, and progressive losses in kidney function.
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