The invention relates to compounds and processes useful for the preparation of protease inhibitors, particularly serine protease inhibitors. The protease inhibitors are useful for treatment of HCV infections.
Processes and intermediates for preparing steric compounds
申请人:Tanoury J. Gerald
公开号:US20070244334A1
公开(公告)日:2007-10-18
This invention relates to processes and intermediates for the preparation of an alpha-amino beta-hydroxy acid of Formula 1
wherein the variables R
1
, R′
1
and R
2
are defined herein and the compound of Formula 1 has an enantiomeric excess (ee) of 55% or greater.
Process for production of optically active-3-amino-2-hydroxypropionic cyclopropylamide derivatives and salts thereof
申请人:Mori Kohei
公开号:US20100048909A1
公开(公告)日:2010-02-25
An objective of the present application is to provide an industrially practicable method for producing an optically-active 3-amino-2-hydroxypropionic cyclopropylamide derivative or salt thereof from an inexpensive easily-available starting material. The derivative or salt thereof is useful as an intermediate for a medicine. It is also intended by the present application to provide a useful intermediate of the derivative. The objective is attained by the following method. First, an easily-available 2-halo-3-oxopropionic acid derivative is asymmetrically reduced, and then epoxidated to produce an optically-active epoxycarboxylic acid derivative. Next, the derivative is converted into an optically-active epoxyamide derivative by reaction with cyclopropylamine, and then reacted with a nitrile to obtain an optically-active oxazolinamide derivative. Subsequently, selective acid solvolysis of the oxazoline skeleton gives the optically-active 3-amino-2-hydroxypropionic cyclopropylamide derivative or salt thereof.
PROCESSES AND INTERMEDIATES FOR PREPARING STERIC COMPOUNDS
申请人:VERTEX PHARMACEUTICALS INCORPORATED
公开号:US20130131359A1
公开(公告)日:2013-05-23
This invention relates to processes and intermediates for the preparation of an alpha-amino beta-hydroxy acid of Formula 1
wherein the variables R
1
, R′
1
and R
2
are defined herein and the compound of Formula 1 has an enantiomeric excess (ee) of 55% or greater.
PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE 3-AMINO-2 -HYDROXYPROPIONIC CYCLOPROPYLAMIDE DERIVATIVES AND SALTS THEREOF
申请人:Kaneka Corporation
公开号:EP2039689A1
公开(公告)日:2009-03-25
An objective of the present application is to provide an industrially practicable method for producing an optically-active 3-amino-2-hydroxypropionic cyclopropylamide derivative or salt thereof from an inexpensive easily-available starting material. The derivative or salt thereof is useful as an intermediate for a medicine. It is also intended by the present application to provide a useful intermediate of the derivative. The objective is attained by the following method. First, an easily-available 2-halo-3-oxopropionic acid derivative is asymmetrically reduced, and then epoxidated to produce an optically-active epoxycarboxylic acid derivative. Next, the derivative is converted into an optically-active epoxyamide derivative by reaction with cyclopropylamine, and then reacted with a nitrile to obtain an optically-active oxazolinamide derivative. Subsequently, selective acid solvolysis of the oxazoline skeleton gives the optically-active 3-amino-2-hydroxypropionic cyclopropylamide derivative or salt thereof.