New potent calcimimetics: II. Discovery of benzothiazole trisubstituted ureas
Bioorganic & Medicinal Chemistry Letters(2013)
摘要
Following the identification of trisubstituted ureas as a promising new chemical series of allosteric modulators of the calcium sensing receptor (CaSR), we further explored the SAR around the urea substitution, leading to the discovery of benzothiazole urea compound 13. This compound is a potent calcimimetic with an EC50=20nM (luciferase assay). Evaluated in an in vivo model of chronic renal failure (short term and long term in 5/6 nephrectomized rats), benzothiazole urea 13 significantly decreased PTH levels after oral administration while keeping calcemia within the normal range.
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关键词
Calcium sensing receptor,Benzothiazole urea,Positive allosteric modulators
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