Design of 2,5-Dimethyl-3-(6-dimethyl-4-methylpyridin-3-yl)-7-dipropylaminopyrazolo[1,5-a]pyrimidine (NBI 30775/R121919) and Structure−Activity Relationships of a Series of Potent and Orally Active Corticotropin-Releasing Factor Receptor Antagonists
摘要:
We have previously shown that 3-phenylpyrazolo[1,5-a]pyrimidines exemplified by 8 were potent antagonists of the human corticotropin-releasing factor-1 receptor. A series of 3-pyridylpyrazolo[1,5-a]pyrimidines 15, 25-30, 34, and 35 containing a weakly basic pyridine ring at the 3-position of the bicyclic nucleus was designed to reduce lipophilicity from the initial leads such as 7. Here, we showed that these 3-pyridyl compounds exhibited potent antagonists at the human CRF1, receptor. Moreover, the hydrophilic and weakly basic pyridine moiety increased the water solubility of some analogues. Compound 26h exhibited good binding affinity at the human CRF1 receptor with a K-i value of 3.5 nM. As a functional antagonist, it dose-dependently inhibited CRF-stimulated cAMP production in cells expressing the CRF1 receptor [IC50 = 50 nM), and CRF-stimulated ACTH release from cultured rat pituitary cells [IC50 = 20 nM). 26h had a log P value of 4.9 and water solubility of greater than 10 mg/mL. Pharmacokinetic studies in rats showed that 26h was orally bioavailable and able to penetrate into the brain. 26h has been demonstrated in vivo efficacy in animal behavioral models that measure anxiolytic activity. These results suggest that analogues from this series were potent CRF1, receptor antagonists with proper physicochemical properties and good pharmacokinetic profiles. 26h was developed into a clinical compound and exhibited efficacy in patients with major depression.
[EN] SUBSTITUTED ARYL 1.4-PYRAZlNE DERIVATIVES BACKGROUND OF THE INVENTION<br/>[FR] DERIVES D'ARYL-1,4-PYRAZINE
申请人:PFIZER PROD INC
公开号:WO2006114666A1
公开(公告)日:2006-11-02
[EN] The invention is directed to compounds of Formula (I), described herein, as well as pharmaceutically acceptable salts thereof, which act as CRF1 antagonists and are useful in the treatment of disorders and diseases associated with CRF1 receptors, including CNS- related disorders and diseases. [FR] L'invention concerne les composés décrits, représentés par la formule (I), ainsi que les sels pharmaceutiquement acceptables de ces composés, qui agissent comme antagonistes du facteur CRF1, et peuvent être utilisés pour le traitement des troubles et des maladies associés aux récepteurs de CRF1, notamment les troubles et les maladies du SNC.
Substituted aryl 1,4-pyrazine derivatives
申请人:Verhoest R. Patrick
公开号:US20060211710A1
公开(公告)日:2006-09-21
The invention is directed to compounds of Formula I, described herein, as well as pharmaceutically acceptable salts thereof, which act as CRF
1
antagonists and are useful in the treatment of disorders and diseases associated with CRF
1
receptors, including CNS-related disorders and diseases.
Design of 2,5-Dimethyl-3-(6-dimethyl-4-methylpyridin-3-yl)-7-dipropylaminopyrazolo[1,5-<i>a</i>]pyrimidine (NBI 30775/R121919) and Structure−Activity Relationships of a Series of Potent and Orally Active Corticotropin-Releasing Factor Receptor Antagonists
作者:Chen、Keith M. Wilcoxen、Charles Q. Huang、Yun-Feng Xie、James R. McCarthy、Thomas R. Webb、Yun-Fei Zhu、John Saunders、Xin-Jun Liu、Ta-Kung Chen、Haig Bozigian、Dimitri E. Grigoriadis
DOI:10.1021/jm040058e
日期:2004.9.1
We have previously shown that 3-phenylpyrazolo[1,5-a]pyrimidines exemplified by 8 were potent antagonists of the human corticotropin-releasing factor-1 receptor. A series of 3-pyridylpyrazolo[1,5-a]pyrimidines 15, 25-30, 34, and 35 containing a weakly basic pyridine ring at the 3-position of the bicyclic nucleus was designed to reduce lipophilicity from the initial leads such as 7. Here, we showed that these 3-pyridyl compounds exhibited potent antagonists at the human CRF1, receptor. Moreover, the hydrophilic and weakly basic pyridine moiety increased the water solubility of some analogues. Compound 26h exhibited good binding affinity at the human CRF1 receptor with a K-i value of 3.5 nM. As a functional antagonist, it dose-dependently inhibited CRF-stimulated cAMP production in cells expressing the CRF1 receptor [IC50 = 50 nM), and CRF-stimulated ACTH release from cultured rat pituitary cells [IC50 = 20 nM). 26h had a log P value of 4.9 and water solubility of greater than 10 mg/mL. Pharmacokinetic studies in rats showed that 26h was orally bioavailable and able to penetrate into the brain. 26h has been demonstrated in vivo efficacy in animal behavioral models that measure anxiolytic activity. These results suggest that analogues from this series were potent CRF1, receptor antagonists with proper physicochemical properties and good pharmacokinetic profiles. 26h was developed into a clinical compound and exhibited efficacy in patients with major depression.