[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
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.
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): 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.
Derivatives of aryl-quinazoline/aryl-2-amino-phenyl methanone which promote the release of parathyroid hormone
申请人:Novartis Pharma AG
公开号:EP1844780A2
公开(公告)日:2007-10-17
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.
式 I 的化合物
其中 R1、R2、R3 和 Y 如本文所定义、
或其药学上可接受和可清除的酯或酸加成盐、
可用于促进甲状旁腺激素的释放,例如用于预防或治疗与钙消耗或吸收增加有关的骨病,或用于刺激骨形成和钙在骨中的固定。
Pharmaceutical compositions comprising a calcilytic agent
申请人:Novartis AG
公开号:EP1964548A1
公开(公告)日:2008-09-03
Provided is a pharmaceutical composition comprising a calcilytic agent which, when administered orally to a subject induces a rapid and short-lasting absorption of the calcilytic agent and/or a rapid and short-lasting release of the parathyroid hormone.