3-Hydroxy-3-(2-thienyl) propionamides and production method thereof, and production method of 3-amino-1-(2-thienyl)-1-propanols using the same
申请人:Takehara Jun
公开号:US20050107621A1
公开(公告)日:2005-05-19
The object of the present invention is to provide 3-hydroxy-3-(2-thienyl)propionamides useful as synthesis intermediates of pharmaceutical preparations and the like and a method for obtaining optically active 3-amino-1-(2-thienyl)-1-propanols using the same with high reaction yield, high optical yield and industrially low cost.
According to the present invention, 3-amino-1-(2-thienyl)-1-propanols are obtained by carrying out asymmetric reduction of a β-ketocarbonyl compound having thiophene ring in the presence of a catalyst constituted from a compound of a group VIII or IX metal in the periodic table (e.g., a ruthenium compound) and an asymmetric ligand represented by a specified optically active diamine derivative (e.g., a diphenylethylenediamine derivative), or using a cell, a treated product of said cell or the like of a microorganism, and as occasion demands, carrying out amidation of the ester group and then carrying out reduction of the amido group.
(each of the substituents is as described in claim 1).
3-HYDROXY-3-(2-THIENYL)PROPIONAMIDE COMPOUND, PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING 3-AMINO-1-(2-THIENYL)-1-PROPANOL COMPOUND THEREFROM
申请人:Mitsubishi Chemical Corporation
公开号:EP1486493A1
公开(公告)日:2004-12-15
The object of the present invention is to provide 3-hydroxy-3-(2-thienyl)propionamides useful as synthesis intermediates of pharmaceutical preparations and the like and a method for obtaining optically active 3-amino-1-(2-thienyl)-1-propanols using the same with high reaction yield, high optical yield and industrially low cost.
According to the present invention, 3-amino-1-(2-thienyl)-1-propanols are obtained by carrying out asymmetric reduction of a β-ketocarbonyl compound having thiophene ring in the presence of a catalyst constituted from a compound of a group VIII or IX metal in the periodic table (e.g., a ruthenium compound) and an asymmetric ligand represented by a specified optically active diamine derivative (e.g., a diphenylethylenediamine derivative), or using a cell, a treated product of said cell or the like of a microorganism, and as occasion demands, carrying out amidation of the ester group and then carrying out reduction of the amido group.
Kinetic Resolution of β-Alkenyl-, β-Alkynyl- and β-Flavenyl-Substituted β-Hydroxy Esters in Asymmetric Dehydration
作者:Min Hee Lee、Eui Ta Choi、Dajung Kim、Yoon Min Lee、Yong Sun Park
DOI:10.1002/ejoc.200800807
日期:2008.11
Catalytic asymmetricdehydration of β-alkenyl- or alkynyl-substituted β-hydroxyesters by kineticresolution has been investigated with five different chiral ligands 3–7. The kineticresolution of a variety of racemic β-hydroxy tert-butyl esters in the presence of a prolinol chiral ligand and BrZnCH2CO2tBu provided highly enantio-enriched β-hydroxyesters 9–22 with selectivity factors ranging from