1-Alkyl-4-phenyl-6-alkoxy-1H-quinazolin-2-ones: A Novel Series of Potent Calcium-Sensing Receptor Antagonists
摘要:
Parathyroid hormone (PTH) is an effective bone anabolic agent. However, only when administered by daily sc injections exposure of short duration is achieved, a prerequisite for an anabolic response. Instead of applying exogenous PTH, mobilization of endogenous stores of the hormone can be envisaged. The secretion of PTH stored in the parathyroid glands is mediated by a calcium Sensing receptor (CaSR) a GPCR localized at the cell surface. Antagonists of CaSR (calcilytics) mimic a state of hypocalcaemia and stimulate PTH release to the bloodstream. Screening of the internal compound collection for inhibition of CaSR signaling function afforded 2a. In vitro potency Could be improved > 1000 fold by optimization of its chemical structure. The binding mode of our compounds was predicted based oil molecular modeling and confirmed by testing with Mutated receptors. While the Compounds readily induced PTH release after iv application a special formulation was needed for oral activity. The required profile was achieved by using microemulsions. Excellent PK/PD correlation was found in rats and dogs. High levels of PTH were reached in plasma within Minutes which reverted to baseline in about 1-2 h in both species.
[EN] DERIVATIVES OF ARYL-QUINAZOLINE/ARYL-2AMINO-PHENYL METHANONE WHICH PROMOTE THE RELEASE OF PARATHYROID HORMONE [FR] DERIVES D'ARYL-QUINAZOLINE/ARYL-2AMINO-PHENYL METHANONE
Use of compound of formula (I), wherein, is, or, and wherein the symbols are as defined, or a pharmaceutically-acceptable and-cleavable ester, or acid addition salt thereof, for the preparation of a medicament for promoting the release of parathyroid hormone, e.g. for preventing or treating bone conditions which are associated with increased calcium depletion or resorption or in which stimulation of bone formation and calcium fixation in the bone is desirable.
1
A compound of formula (I): wherein R1, R2, R3 and Y are as defined herein, or a pharmaceutically-acceptable and -cleavable ester, or acid addition salt thereof, useful for promoting the release of parathyroid hormone, e.g. for preventing or treating bone conditions which are associated with increased calcium depletion or resorption or in which stimulation of bone formation and calcium fixation in the bone is desirable.
A compound of formula (I) or a pharmaceutically acceptable salt or prodrug ester thereof:
wherein R is as defined in the specification.
化合物式(I)或其药学上可接受的盐或前药酯:
其中R的定义在说明书中。
BENZOQUINAZOLINE DERIVATIVES
申请人:Ammon Sandra
公开号:US20100166765A1
公开(公告)日:2010-07-01
A compound of formula (I) or a pharmaceutically acceptable salt or prodrug ester thereof, wherein the groups R2, R3, R4, Q, X and Y are as defined in the specification, is useful in the treatment of bone conditions related to increased calcium depletion or resorption.
Quinazoline derivatives which promote the release of parathyroid hormone
申请人:Beerli René
公开号:US08476286B2
公开(公告)日:2013-07-02
Use of compound of formula (I), wherein, is, or, and wherein the symbols are as defined, or a pharmaceutically-acceptable and -cleavable ester, or acid addition salt thereof, for the preparation of a medicament for promoting the release of parathyroid hormone, e.g. for preventing or treating bone conditions which are associated with increased calcium depletion or resorption or in which stimulation of bone formation and calcium fixation in the bone is desirable.