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:
Jul. 05, 2022
Filed:
Jan. 17, 2019
Yabao Pharmaceutical Group Co., Ltd., Shanxi, CN;
Suzhou Yabao Pharmaceutical R&d Co., Ltd., Jiangsu, CN;
Yabao Pharmaceutical Group Co., Ltd., Shanxi, CN;
Suzhou Yabao Pharmaceutical R&D Co., Ltd., Jiangsu, CN;
Abstract
A pyranoglucose-substituted pyrazole compound, used as a pharmaceutical intermediate, having the structural formula represented by formula (9c). The present invention further relates to an intermediate compound represented by formula (10c) or a salt thereof. The present invention further relates to a preparation method of the aforementioned intermediate compound and a method of using the same to prepare an SGLT inhibitor. By means of the novel key intermediate, the preparation technique of an SGLT inhibitor is greatly simplified. In addition, because the intermediate can be precipitated in the form of a salt and is easy to purify, the purity of the SGLT inhibitor is significantly increased, compared with the original preparation pathway (crude product purity can reach 99% or more). (I)