The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2020
Filed:
Sep. 19, 2017
Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, CN;
Hong Liu, Shanghai, CN;
Jiang Wang, Shanghai, CN;
Shengbin Zhou, Shanghai, CN;
Panfeng Peng, Shanghai, CN;
Yong Nian, Shanghai, CN;
Shuni Wang, Shanghai, CN;
Shuangjie Shu, Shanghai, CN;
Hao Shen, Shanghai, CN;
Hualiang Jiang, Shanghai, CN;
Kaixian Chen, Shanghai, CN;
Abstract
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)-β-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.