Pyrrolidine-3-carboxylic Acids as Endothelin Antagonists. 5. Highly Selective, Potent, and Orally Active ETA Antagonists
摘要:
The synthesis and structure-activity relationships (SAR) of a series of pyrrolidine-3-carboxylic acids as endothelin antagonists are described. The data shows an increase in selectivity when the methoxy of Atrasentan (ABT-627) is replaced with methyl, and the benzodioxole is replaced with dihydrobenzofuran. Adding a fluorine further increases the binding activity and provides a metabolically stable and orally bioavailable ETA-selective antagonist.
New pyrimidine or pyridine based compounds, compositions and methods of inhibiting the activity of glycogen synthase kinase (GSK3) in vitro and of treatment of GSK3 mediated disorders in vivo are provided. The methods, compounds and compositions of the invention may be employed alone, or in combination with other pharmacologically active agents in the treatment of disorders mediated by GSK3 activity, such as diabetes, Alzheimer's disease and other neurodegenerative disorders, obesity, atherosclerotic cardiovascular disease, essential hypertension, polycystic ovary syndrome, syndrome X, ischemia, traumatic brain injury, bipolar disorder, immunodeficiency or cancer.
A novel and efficient method for the synthesis of α-cyanomethyl-β-dicarbonyls in moderate to excellent yields is developed by using inactive CH3CN and simple 1,3-dicarbonyls. A radical mechanism is proposed under the ESI-MS (electrospray ionization mass spectrometry) analysis results of control experiments.
Visible-light-induced α-oxyamination of 1,3-dicarbonyls with TEMPO <i>via</i> a photo(electro)catalytic process applying a DSSC anode or in a DSSC system
enviromentally friendly photoelectrocatalytic one-pot method was developed for the α-oxyamination between 1,3-dicarbonyls and TEMPO via a photo(electro)catalytic process using visible light as the energy source. The recovered DSSC anode (photocatalyst) could be used more than 8 times, at the same time, the α-oxyamination reaction proceeding in the DSSC device might be involved in the photoelectrocatalysis
meso-dicarbonatecyclohexene with β-hydrazino carboxylic esters has been achieved via a RuPHOX/Pd-catalyzed allylic substitution cascade for the construction of chiral hexahydrocinnoline derivatives with high performance. Mechanistic studies reveal that the reaction exploits a pathway different from that of our previous work and that the first nitrogen nucleophilic process is the rate-determining step. The protocol
Discovery and Optimization of Potent, Cell-Active Pyrazole-Based Inhibitors of Lactate Dehydrogenase (LDH)
作者:Ganesha Rai、Kyle R. Brimacombe、Bryan T. Mott、Daniel J. Urban、Xin Hu、Shyh-Ming Yang、Tobie D. Lee、Dorian M. Cheff、Jennifer Kouznetsova、Gloria A. Benavides、Katie Pohida、Eric J. Kuenstner、Diane K. Luci、Christine M. Lukacs、Douglas R. Davies、David M. Dranow、Hu Zhu、Gary Sulikowski、William J. Moore、Gordon M. Stott、Andrew J. Flint、Matthew D. Hall、Victor M. Darley-Usmar、Leonard M. Neckers、Chi V. Dang、Alex G. Waterson、Anton Simeonov、Ajit Jadhav、David J. Maloney
DOI:10.1021/acs.jmedchem.7b00941
日期:2017.11.22
pyrazole-based inhibitors of human lactatedehydrogenase (LDH). Utilization of a quantitative high-throughput screening paradigm facilitated hit identification, while structure-based design and multiparameter optimization enabled the development of compounds with potent enzymatic and cell-based inhibition of LDH enzymatic activity. Lead compounds such as 63 exhibit low nM inhibition of both LDHA and