[EN] IMIDAZOPYRAZINONES, PYRAZOLOPYRIMIDINONES AND PYRAZOLOPYRIDINONES AS PDE1 INHIBITORS [FR] IMIDAZOPYRAZINONES, PYRAZOLOPYRIMIDINONES ET PYRAZOLOPYRIDINONES EN TANT QU'INHIBITEURS DE PDE1
In this work, we disclose a new catalytic and highly chemoselective cross-Claisen condensation of esters. In the presence of TBSNTf2 as a non-metal Lewis acid, various esters can undergo cross-Claisen condensation to form β-ketoesters which are important building blocks. Compared with the traditional Claisen condensation, this process, employing silyl ketene acetals (SKAs) as carbonic nucleophiles
Thiazole and oxazole derivatives as activators of human peroxisome proliferator activated receptors
申请人:——
公开号:US20040072838A1
公开(公告)日:2004-04-15
The present invention provides a compound of formula (1) wherein R
1
-R
5
, R
25
, R
26
, Y and X
2
are defined as in claim 1. The compounds activate human peroxisome proliferator activated receptors (hPPARs) and arc useful for the treatment of associated disorders such as cardiovascular disease and hypercholesteremia.
1
Substituted 9-Diethylaminobenzo[<i>a</i>]phenoxazin-5-ones (Nile Red Analogues): Synthesis and Photophysical Properties
作者:Mick Hornum、Mads W. Mulberg、Maria Szomek、Peter Reinholdt、Jonathan R. Brewer、Daniel Wüstner、Jacob Kongsted、Poul Nielsen
DOI:10.1021/acs.joc.0c02346
日期:2021.1.15
e.g., fluorescence lifetime imaging or two-photon excited fluorescence microscopy, to which Nile Red has never been optimized. Herein, we present synthesis approaches to a series of monosubstituted Nile Red derivatives (9-diethylbenzo[a]phenoxazin-5-ones) starting from 1-naphthols or 1,3-naphthalenediols. The solvatochromic responsiveness of these fluorophores is reported with focus on how the substituents
6-Biphenylmethyl-3-hydroxypyrimidine-2,4-diones potently and selectively inhibited HIV reverse transcriptase-associated RNase H
作者:Lei Wang、Jing Tang、Andrew D. Huber、Mary C. Casey、Karen A. Kirby、Daniel J. Wilson、Jayakanth Kankanala、Michael A. Parniak、Stefan G. Sarafianos、Zhengqiang Wang
DOI:10.1016/j.ejmech.2018.07.035
日期:2018.8
Humanimmunodeficiencyvirus (HIV) reversetranscriptase (RT)-associated ribonuclease H (RNase H) remains an unvalidated drug target. Reported HIV RNase H inhibitors generally lack significant antiviral activity. We report herein the design, synthesis, biochemical and antiviral evaluations of a new 6-biphenylmethyl subtype of the 3-hydroxypyrimidine-2,4-dione (HPD) chemotype. In biochemical assays
Investigation of (<i>E</i>)-3-[4-(2-Oxo-3-aryl-chromen-4-yl)oxyphenyl]acrylic Acids as Oral Selective Estrogen Receptor Down-Regulators
作者:Sébastien L. Degorce、Andrew Bailey、Rowena Callis、Chris De Savi、Richard Ducray、Gillian Lamont、Philip MacFaul、Mickael Maudet、Scott Martin、Rémy Morgentin、Richard A. Norman、Aurélien Peru、Jennifer H. Pink、Patrick A. Plé、Bryan Roberts、James S. Scott
DOI:10.1021/acs.jmedchem.5b00066
日期:2015.4.23
A novel estrogenreceptordown-regulator, 7-hydroxycoumarin (5, SS5020), has been reported with antitumor effects against chemically induced mammary tumors. Here, we report on our own investigation of 7-hydroxycoumarins as potential selectiveestrogenreceptordown-regulators, which led us to the discovery of potent down-regulating antagonists, such as 33. Subsequent optimization and removal of the