申请人:Queen's University at Kingston and Neurochem, Inc.
公开号:US20030194375A1
公开(公告)日:2003-10-16
Methods and compounds useful for the inhibition of convulsive disorders, including epilepsy, are disclosed. The methods and compounds of the invention inhibit or prevent ictogenesis and/or epileptogenesis. Methods for preparing the compounds of the invention are also described.
METHOD FOR SYNTHESIZING NOVEL CHIRAL LIGAND, METAL CHELATE, A VARIETY OF NON-NATURAL AMINO ACIDS, MARAVIROC AND KEY INTERMEDIATE THEREOF
申请人:Shanghai Institute of Materia Medica,
Chinese Academy of Sciences
公开号:EP3521274A1
公开(公告)日:2019-08-07
Disclosed is a method for synthesizing a novel chiral ligand, a metal chelate, a variety of non-natural amino acids, Maraviroc and a key intermediate thereof. In the invention, (R)-2-methyl proline is selected and used as a starting raw material, (S)-β3-amino acid is obtained by asymmetric resolution induced by using a nickel chelate, and Maraviroc is synthesized by using (S)-3-amino-3-phenylpropionic acid as a key intermediate with a high yield and the ee value reaching 98.2% or more. The method of the present invention has widely available materials, mild synthetic process conditions, is easy to control, and produces a product of a high optical purity.
Method for synthesizing novel chiral ligand, metal chelate, a variety of non-natural amino acids, maraviroc and key intermediate thereof
申请人:SHANGHAI INSTITUTE OF MATERIA MEDICA, CHINESE ACADEMY OF SCIENCES
公开号:US10875883B2
公开(公告)日:2020-12-29
Disclosed is a method for synthesizing a novel chiral ligand, a metal chelate, a variety of non-natural amino acids, Maraviroc and a key intermediate thereof. In the invention, (R)-2-methyl proline is selected and used as a starting raw material, (S)-β3-amino acid is obtained by asymmetric resolution induced by using a nickel chelate, and Maraviroc is synthesized by using (S)-3-amino-3-phenylpropionic acid as a key intermediate with a high yield and the ee value reaching 98.2% or more. The method of the present invention has widely available materials, mild synthetic process conditions, is easy to control, and produces a product of a high optical purity.