Renin inhibitors containing hydrophilic groups. Tetrapeptides with enhanced aqueous solubility and nanomolar potency
摘要:
Nineteen tetrapeptides containing statine (Sta) and 4-amino-5-cyclohexyl-3-hydroxypentanoic acid (ACHPA) were prepared. Solubility measurements of these compounds were carried out in H2O and in pH 7.4 phosphate buffer solution, and their partition coefficients were determined in a 1:1 1-octanol/sodium phosphate-citric acid buffer system. The tetrapeptides were tested in vitro for their ability to inhibit porcine, canine, and human plasma renins. Four compounds, 6, 12, 14, and 20, were potent inhibitors against all renins tested (IC50 = 10(-9) M). Compound 12 was administered orally to dogs and substantially inhibited plasma renin activity for up to 5 h. The addition of polar groups to the C-terminus of Sta- and ACHPA-containing tetrapeptides renders them soluble in aqueous milieu and provides a valuable tool with which to examine the role of the renin-angiotensin system in physiological and pathological circumstances.
A Comparative Assessment Study of Known Small-Molecule Keap1−Nrf2 Protein–Protein Interaction Inhibitors: Chemical Synthesis, Binding Properties, and Cellular Activity
摘要:
Inhibiting the protein-protein interaction (PPI) between the transcription factor Nrf2 and its repressor protein Keap1 has emerged as a promising strategy to target oxidative stress in diseases, including central nervous system (CNS) disorders. Numerous non-covalent small-molecule Keap1-Nrf2 PPI inhibitors have been reported to date, but many feature suboptimal physicochemical properties for permeating the blood brain barrier, while others contain problematic structural moieties. Here, we present the first side-by-side assessment of all reported Keap1-Nrf2 PPI inhibitor classes using fluorescence polarization, thermal shift assay, and surface plasmon resonance-and further evaluate the compounds in an NQO1 induction cell assay and in counter tests for nonspecific activities. Surprisingly, half of the compounds were inactive or deviated substantially from reported activities, while we confirm the cross-assay activities for others. Through this study, we have identified the most promising Keap1-Nrf2 inhibitors that can serve as pharmacological probes or starting points for developing CNS-active Keap1 inhibitors.
[EN] BENZOPYRANE AND IMIDAZOLE DERIVATIVES USEFUL FOR THE STABILIZATION OF AMYLOIDOGENIC IMMUNOGLOBULIN LIGHT CHAINS<br/>[FR] DÉRIVÉS DE STABILISATION DE BENZOPYRANE ET D'IMIDAZOLE UTILISÉS POUR LA STABILISATION DE CHAÎNES LÉGÈRES D'IMMUNOGLOBULINES AMYLOÏDOGÉNIQUES
申请人:SCRIPPS RESEARCH INST
公开号:WO2020205683A1
公开(公告)日:2020-10-08
In immunoglobulin light chain amyloidosis (AL), the unique antibody light chain (LC) protein that is secreted by monoclonal plasma cells in each patient misfolds and/or aggregates, a process leading to organ degeneration. For treating AL patients, such as those with substantial cardiac involvement who have difficulty tolerating existing chemotherapy regimens, provided herein are small molecule compounds of Formula Ia, Formula Ib, and Formula II that are kinetic stabilizers of the native dimeric structure of full-length LCs, which compounds can slow or stop the amyloidogenicity cascade at its origin.
Design, synthesis, and evaluation of potent novel peroxisome proliferator-activated receptor γ indole partial agonists
作者:Venkateswararao Eeda、Dan Wu、Hui-Ying Lim、Weidong Wang
DOI:10.1016/j.bmcl.2019.126664
日期:2019.11
PeroxisomeProliferator-ActivatedReceptorγ (PPARγ) is a nuclear receptor important for glucose homeostasis and insulin sensitivity. The anti-diabetic drugs thiazolidinediones improve insulin sensitivity by blocking PPARγ phosphorylation at S273; however, their full agonism on PPARγ also causes significant unwanted side effects. The indole derivative UHC1 displays insulin-sensitizing effect by acting
Discovery of β-aminoacyl containing thiazolidine derivatives as potent and selective dipeptidyl peptidase IV inhibitors
作者:Woul Seong Park、Seung Kyu Kang、Mi Ae Jun、Mi Sik Shin、Ki Young Kim、Sang Dal Rhee、Myung Ae Bae、Min Sun Kim、Kwang Rok Kim、Nam Sook Kang、Sung-eun Yoo、Jie Oh Lee、Dong Hyun Song、Peter Silinski、Stephen Edward Schneider、Jin Hee Ahn、Sung Soo Kim
DOI:10.1016/j.bmcl.2011.01.041
日期:2011.3
containing thiazolidine derivatives was synthesized and evaluated for their ability to inhibit DPP-IV. Several thiazolidine derivatives with an acid moiety were found to be potent DPP-IV inhibitors. Among them, compound 2da is the most active in this series with an IC50 value of 1 nM, and it showed excellent selectivity over DPP-IV related enzymes including DPP-2, DPP-8, and DPP-9. Compound 2da is chemically
Abstract: Disclosed is a sulfonamide compound having a chemical structure characterized in that the compound has an amide structure wherein a carbon atom in the amide binds to a nitrogen atom in a sulfonamide through a lower alkylene, or a salt of the compound. The compound or the salt has a potent antagonistic activity against an EP 1 receptor and is therefore useful as a therapeutic agent for a disease associated with an EP1 receptor, particularly lower urinary tract symptom.
Tetrahydroisoquinolin-1-one derivative or salt thereof
申请人:Seldar Pharma Inc.
公开号:US10016410B2
公开(公告)日:2018-07-10
To provide a pharmaceutical, in particular a compound which can be used as a therapeutic agent for irritable bowel syndrome (IBS). It was found that a tetrahydroisoquinolin-1-one derivative having an amide group at the 4-position or a pharmaceutically acceptable salt thereof has an excellent bombesin 2 (BB2) receptor antagonistic action. It is also found that the tetrahydroisoquinolin-1-one derivative is highly effective on bowel movement disorders. From the above, the tetrahydroisoquinolin-1-one derivative of the present invention is useful as a therapeutic agent for diseases associated with a BB2 receptor, in particular IBS.