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:
Mar. 05, 2024
Filed:
Dec. 04, 2020
Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang, CN;
Changming Yang, Zheijang, CN;
Pan Guo, Zheijang, CN;
Yifeng Wang, Zheijang, CN;
Wenling Zhang, Zheijang, CN;
Peng Wang, Zheijang, CN;
ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD, Zhejiang, CN;
Abstract
The present invention relates to a method for preparing pregabalin by a biological enzyme method. In particular, the method comprises producing pregabalin B and an R-configuration compound C by using a compound A as a raw material under the action of a biological enzyme; performing configuration inversion of the separated and recovered R-configuration compound C under the action of an isomerase to produce an S-configuration compound D; and producing pregabalin B from the compound D under the action of a biological enzyme.