Identification and Optimization of Benzimidazole Sulfonamides as Orally Bioavailable Sphingosine 1-Phosphate Receptor 1 Antagonists with in Vivo Activity
摘要:
We report here a novel series of benzimidazole sulfonamides that act as antagonists of the S1P(1) receptor, identified by exploiting an understanding of the pharmacophore of a high throughput screening (HTS)-derived series of compounds described previously. Lead compound 2 potently inhibits SIP-induced receptor internalization in a cell-based assay (EC50 = 0.05 mu M), but has poor physical properties and metabolic stability. Evolution of this compound through structure-activity relationship development and property optimization led to in vivo probes such as 4. However, this compound was unexpectedly found to be a potent CYP3A inducer in human hepatocytes, and thus further chemistry efforts were directed at addressing this liability. By employing a pregnane X receptor (PXR) reporter gene assay to prioritize compounds for further testing in human hepatocytes, we identified lipophilicity as a key molecular property influencing the likelihood of P450 induction. Ultimately, we have identified compounds such as 46 and 47, which demonstrate the desired S1P(1) antagonist activity while having greatly reduced risk of CYP3A induction in humans. These compounds have excellent oral bioavailability in preclinical species and exhibit pharmacodynamic effects of S1P(1) antagonism in several in vivo models following oral dosing. Relatively modest antitumor activity was observed in multiple xenograft models, however, suggesting that selective S1P(1) antagonists would have limited utility as anticancer therapeutics as single agents.
Discovery of Aminofurazan-azabenzimidazoles as Inhibitors of Rho-Kinase with High Kinase Selectivity and Antihypertensive Activity
摘要:
The discovery, proposed binding mode, and optimization of a novel class of Rho-kinase inhibitors are presented. Appropriate substitution on the 6-position of the azabenzimidazole core provided subnanomolar enzyme potency in vitro while dramatically improving selectivity over a panel of other kinases. Pharmacokinetic data was obtained for the most potent and selective examples and one (6n) has been shown to lower blood pressure in a rat model of hypertension.
HETEROCYCLYC SULFONAMIDES HAVING EDG-1 ANTAGONISTIC ACTIVITY
申请人:Grewal Gurmit
公开号:US20100029643A1
公开(公告)日:2010-02-04
The invention relates to chemical compounds of formula (I), (Ia) and (Ib) or pharmaceutically acceptable salts thereof, which possess Edg-1 antagonistic activity and are accordingly useful for their anti-cancer activity and thus in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of said chemical compounds, to pharmaceutical compositions containing them and to their use in the manufacture of medicaments for use in the production of an anti-cancer effect in a warm-blooded animal, such as man.
HETEROCYCLYC SULFONAMIDES HAVING EDG-I ANTAGONISTIC ACTIVITY
申请人:AstraZeneca AB
公开号:EP2094670A1
公开(公告)日:2009-09-02
[EN] HETEROCYCLYC SULFONAMIDES HAVING EDG-I ANTAGONISTIC ACTIVITY<br/>[FR] SULFONAMIDES HÉTÉROCYCLIQUES À ACTIVITÉ ANTAGONISTE DE EDG-1
申请人:ASTRAZENECA AB
公开号:WO2008056150A1
公开(公告)日:2008-05-15
[EN] The invention relates to chemical compounds of formula (I), (Ia) and (Ib) or pharmaceutically acceptable salts thereof, which possess Edg-1 antagonistic activity and are accordingly useful for their anti-cancer activity and thus in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of said chemical compounds, to pharmaceutical compositions containing them and to their use in the manufacture of medicaments for use in the production of an anti-cancer effect in a warm-blooded animal, such as man. [FR] L'invention porte sur des composés chimiques de formule (I), (Ia) et (Ib) ou sur des sels pharmaceutiquement acceptables de ceux-ci, qui possèdent une activité antagoniste de Edg-1 et sont en conséquence utiles pour leur activité anti-cancer et donc dans des procédés de traitement du corps humain ou animal. L'invention porte également sur des procédés de fabrication desdits composés chimiques, sur des compositions pharmaceutiques les contenant et sur leur utilisation dans la fabrication de médicaments utilisés pour produire un effet anti-cancer chez un animal à sang chaud, tel que l'homme.
Discovery of Aminofurazan-azabenzimidazoles as Inhibitors of Rho-Kinase with High Kinase Selectivity and Antihypertensive Activity
作者:Robert A. Stavenger、Haifeng Cui、Sarah E. Dowdell、Robert G. Franz、Dimitri E. Gaitanopoulos、Krista B. Goodman、Mark A. Hilfiker、Robert L. Ivy、Jack D. Leber、Joseph P. Marino,、Hye-Ja Oh、Andrew Q. Viet、Weiwei Xu、Guosen Ye、Daohua Zhang、Yongdong Zhao、Larry J. Jolivette、Martha S. Head、Simon F. Semus、Patricia A. Elkins、Robert B. Kirkpatrick、Edward Dul、Sanjay S. Khandekar、Tracey Yi、David K. Jung、Lois L. Wright、Gary K. Smith、David J. Behm、Christopher P. Doe、Ross Bentley、Zunxuan X. Chen、Erding Hu、Dennis Lee
DOI:10.1021/jm060873p
日期:2007.1.1
The discovery, proposed binding mode, and optimization of a novel class of Rho-kinase inhibitors are presented. Appropriate substitution on the 6-position of the azabenzimidazole core provided subnanomolar enzyme potency in vitro while dramatically improving selectivity over a panel of other kinases. Pharmacokinetic data was obtained for the most potent and selective examples and one (6n) has been shown to lower blood pressure in a rat model of hypertension.
Identification and Optimization of Benzimidazole Sulfonamides as Orally Bioavailable Sphingosine 1-Phosphate Receptor 1 Antagonists with in Vivo Activity
作者:Edward J. Hennessy、Vibha Oza、Ammar Adam、Kate Byth、Lillian Castriotta、Gurmit Grewal、Geraldine A. Hamilton、Victor M. Kamhi、Paula Lewis、Danyang Li、Paul Lyne、Linda Öster、Michael T. Rooney、Jamal C. Saeh、Li Sha、Qibin Su、Shengua Wen、Yafeng Xue、Bin Yang
DOI:10.1021/acs.jmedchem.5b01078
日期:2015.9.10
We report here a novel series of benzimidazole sulfonamides that act as antagonists of the S1P(1) receptor, identified by exploiting an understanding of the pharmacophore of a high throughput screening (HTS)-derived series of compounds described previously. Lead compound 2 potently inhibits SIP-induced receptor internalization in a cell-based assay (EC50 = 0.05 mu M), but has poor physical properties and metabolic stability. Evolution of this compound through structure-activity relationship development and property optimization led to in vivo probes such as 4. However, this compound was unexpectedly found to be a potent CYP3A inducer in human hepatocytes, and thus further chemistry efforts were directed at addressing this liability. By employing a pregnane X receptor (PXR) reporter gene assay to prioritize compounds for further testing in human hepatocytes, we identified lipophilicity as a key molecular property influencing the likelihood of P450 induction. Ultimately, we have identified compounds such as 46 and 47, which demonstrate the desired S1P(1) antagonist activity while having greatly reduced risk of CYP3A induction in humans. These compounds have excellent oral bioavailability in preclinical species and exhibit pharmacodynamic effects of S1P(1) antagonism in several in vivo models following oral dosing. Relatively modest antitumor activity was observed in multiple xenograft models, however, suggesting that selective S1P(1) antagonists would have limited utility as anticancer therapeutics as single agents.