Highly Efficient Suzuki–Miyaura Coupling of Heterocyclic Substrates through Rational Reaction Design
作者:Christoph A. Fleckenstein、Herbert Plenio
DOI:10.1002/chem.200701877
日期:2008.5.9
the presence of 0.5 mol % of catalyst, and S-heterocyclic aryl chlorides and aryl- or 3-pyridylboronic acids required 0.01-0.05 mol % Pd catalyst for full conversion. The key to the high activity of the Pd-phosphine catalyst is the rationaldesign of the reaction parameters (i.e., the presence of water in the reaction mixture, good solubility of reactants and catalyst in n-butanol/water (3:1), and
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof:
which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The present invention relates to novel antiviral compounds represented herein above, pharmaceutical compositions comprising such compounds, and methods for the treatment or prophylaxis of viral (particularly HCV) infection in a subject in need of such therapy with said compounds.
Method for Determining the Activity of a Protease in a Sample
申请人:Blomgren Anders
公开号:US20100021940A1
公开(公告)日:2010-01-28
There is provided a method for determining the activity of a protease in a sample. The method comprises (i) admixing said sample with a substrate, wherein the substrate has the formula (1a) wherein: R
1
is a hydrocarbyl group; R
2
is a first peptide moiety; R
3
is a second peptide moiety and X is selected from the group consisting of O, S and NH; Y
1
is a suitable substituent; Y
2
is a suitable substituent; and (ii) determining the activity of said protease by detecting the presence of a reporter having the formula H—X—R
1
, wherein: X is selected from the group consisting of O, S and NH; R
1
is a hydrocarbyl group. The substrate and reporter are useful for determining the efficacy of protease-modulators and candidate protease-modulators and in the diagnosis of a disease or disorder in a subject.