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. 17, 2020
Filed:
Nov. 02, 2016
Zhejiang Huahai Pharmaceuticals Co., Ltd, Linhai, CN;
Shanghai Aobo Pharmtech, Inc., Ltd., Shanghai, CN;
Siyuan Li, Shanghai, CN;
Shaoxiao Gui, Shanghai, CN;
Genliang Wang, Shanghai, CN;
Jicheng Zhang, Shanghai, CN;
Luning Huang, Shanghai, CN;
Anping Tao, Shanghai, CN;
Hong Gu, Shanghai, CN;
ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD, Linhai, CN;
SHANGHAI AOBO PHARMTECH, INC., LTD., Shanghai, CN;
Abstract
The invention relates to a method for preparing an oxazolidinone intermediate. Specifically, a synthesis procedure for the intermediate comprises: directly performing a 'one-pot' reaction on a compound I, compound J or compound L without performing isolation, wherein a salt of a compound K is selected from a hydrochloride, sulfate, malate, tartrate, p-toluenesulfonate, or lactate, and wherein the symbol * in a compound indicates an atom of an R-type chirality or an S-type chirality or a racemate thereof.