Discovery of highly potent renin inhibitors potentially interacting with the S3′ subsite of renin
摘要:
To exploit the S3' subsite of renin active site for renin inhibitor design, 42 aliskiren derivatives with modified P2' portion were designed, synthesized and biologically evaluated. Some highly potent renin inhibitors (IC50 < 3 nM) were identified, among which compounds 38 (IC50 = 0.9 nM) and 39 (IC50 = 0.7 nM) were over 2.5-fold more potent than aliskiren (IC50 = 2.3 nM). SAR analysis indicated that incorporation of polar hydrophilic moieties into the P2' portion of renin inhibitors generally enhanced the potency. Consistently with this, molecular modeling study revealed that the triazole part of 39 could provide additional interactions to the S3' subsite of renin active site. Moreover, in vivo evaluation in the double transgenic mouse hypertension model demonstrated that 39 produced greater reduction of the mean arterial blood pressure than ariskiren at the doses of 17.0 and 34.0 mu mol/kg, respectively. Taken together, the S3' subsite of renin active site merits further consideration for renin inhibitor design. (C) 2015 Elsevier Masson SAS. All rights reserved.
Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy
作者:Sébastien Alazet、Michael S. West、Purvish Patel、Sophie A. L. Rousseaux
DOI:10.1002/anie.201903215
日期:2019.7.22
preparation of nitrile‐containing building blocks is of interest due to their utility as synthetic intermediates and their prevalence in pharmaceuticals. As a result, significant efforts have been made to develop methods to access these motifs which rely on safer and non‐toxic sources of CN. Herein, we report that 2‐methyl‐2‐phenylpropanenitrile is an efficient, non‐toxic, electrophilic CN source for
We have proposed a multi-template approach for drug development, focusing on similar fold structures of proteins, and have effectively generated lead compounds for several drug targets. Modification of these polypharmacological lead compounds is then needed to generate target-selective compounds. In the work presented here, we aimed at separation of the anti-androgen activity and vitamin D activity of previously identified diphenylpentane lead compounds. Based on the determined X-ray crystal structures of androgen receptor and vitamin D receptor, bulky substituents were introduced at the t-butyl group in the lead compounds 2 and 3. As a result of this structural development, we obtained 16c, which exhibits more potent anti-androgen activity (IC(50): 0.13 mu M) than clinically used anti-androgen bicalutamide (IC(50): 0.67 mu M) with 30-fold selectivity over vitamin D activity. This result indicates that lead compounds obtained via the multi-template approach can indeed be structurally modified to generate target-selective compounds. (C) 2010 Elsevier Ltd. All rights reserved.