Non-Nucleoside Benzimidazole-Based Allosteric Inhibitors of the Hepatitis C Virus NS5B Polymerase: Inhibition of Subgenomic Hepatitis C Virus RNA Replicons in Huh-7 Cells
non-nucleoside allosteric inhibitors of the NS5Bpolymerase of the hepatitisCvirus (HCV) was optimized to yield novel compounds with improved physicochemical properties and activity in cell-based assays. Replacement of ionizable carboxylic acids with neutral substituents in lead compounds produced inhibitors with cellular permeability and antiviral activity in a cell-based assay of subgenomic HCV RNA replication
Process for producing optically active alpha-amino acid and optically active alpha-amino acid amine
申请人:——
公开号:US20030171597A1
公开(公告)日:2003-09-11
The present invention provides a process for efficiently producing an optically active &agr;-amino acid and an optically active &agr;-amino acid amide. After contacting with cells or processed cells thereof having an ability to asymmetrically hydrolyse, a water solvent is substituted with at least one solvent selected from the group consisting of linear, branched, or cyclic alcohol having 3 or more carbon atoms and the optically active &agr;-amino acid is preferentially precipitated from the alcohol solution.
The addition of basic compounds, particularly potassium compounds to the alcohol solution containing the optically active &agr;-amino acid amide, which is obtained after the separation of the optically active &agr;-amino acid, enables the purification of the amide without the inclusion of amino acid into amino acid amide. Thus, the amide is subjected to the step of racemization and then recycled.
A variety of small, guanidino group-containing molecules capable of acting as MC4-R agonists are provided. The compounds have various structures provided herein. The compounds are useful in treating MC4-R mediated diseases and may be formulated into pharmaceutical formulations and compositions.
Synthesis of substituted-borane adducts of amines and amino acids. The crystal structure of pyridine-N-ethylcarbamoylborane
作者:G Rana
DOI:10.1016/s0020-1693(02)01097-6
日期:2003.1.10
# 2002 Elsevier Science B.V. All rights reserved. Keywords: Borobetaine; Borane; Carboxyborane; Hypolipidaemic; L -Dopa 1. IntroductionThe biological activity of amine / borane adducts iswell established in the literature [1 / 6].Several com-pounds have demonstrated significant antitumor activ-ity in vivo [2,4], and the borane adducts with aliphaticand aromatic amines, such as a-amino acids, peptides
PROCESS FOR PRODUCING OPTICALLY ACTIVE ALPHA-AMINO ACID AND OPTICALLY ACTIVE ALPHA-AMINO ACID AMIDE
申请人:Mitsubishi Rayon Co., Ltd.
公开号:EP1300392A1
公开(公告)日:2003-04-09
The present invention provides a process for efficiently producing an optically active α-amino acid and an optically active α-amino acid amide. After contacting with cells or processed cells thereof having an ability to asymmetrically hydrolyse, a water solvent is substituted with at least one solvent selected from the group consisting of linear, branched, or cyclic alcohol having 3 or more carbon atoms and the optically active α-amino acid is preferentially precipitated from the alcohol solution.
The addition of basic compounds, particularly potassium compounds to the alcohol solution containing the optically active α-amino acid amide, which is obtained after the separation of the optically active α-amino acid, enables the purification of the amide without the inclusion of amino acid into amino acid amide. Thus, the amide is subjected to the step of racemization and then recycled.