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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.:

US 10556905 B1

PDFFull Text
Date of Patent:
Feb. 11, 2020

Filed:

May. 08, 2018

Processes for preparing a diazabicyclooctane compound

Applicant:

Meiji Seika Pharma Co., Ltd., Chuo-ku, Tokyo, JP;

Inventors:

Takao Abe, Kanagawa, JP;

Takeshi Furuuchi, Kanagawa, JP;

Yoshiaki Sakamaki, Kanagawa, JP;

Seiichi Inamura, Kanagawa, JP;

Akihiro Morinaka, Kanagawa, JP;

Assignee:

MEIJI SEIKA PHARMA CO., LTD., Tokyo, JP;

Attorney:

Holtz, Holtz & Volek PC

Primary Examiner:

Niloofar Rahmani

Int. Cl.
CPC ...
C07D 211/06 (2006.01); C07D 295/00 (2006.01); C07D 471/08 (2006.01); A61K 31/439 (2006.01); A61K 31/4545 (2006.01); A61K 31/5377 (2006.01); A61K 31/407 (2006.01); A61K 31/4162 (2006.01); A61K 31/427 (2006.01); A61K 45/06 (2006.01); A61K 31/43 (2006.01); A61K 31/545 (2006.01); A61K 31/546 (2006.01); C07D 211/60 (2006.01); A61K 31/444 (2006.01); A61K 31/437 (2006.01); C07F 7/08 (2006.01);
U.S. Cl.
CPC ...
C07D 471/08 (2013.01); A61K 31/407 (2013.01); A61K 31/4162 (2013.01); A61K 31/427 (2013.01); A61K 31/43 (2013.01); A61K 31/437 (2013.01); A61K 31/439 (2013.01); A61K 31/444 (2013.01); A61K 31/4545 (2013.01); A61K 31/5377 (2013.01); A61K 31/545 (2013.01); A61K 31/546 (2013.01); A61K 45/06 (2013.01); C07D 211/60 (2013.01); C07F 7/0812 (2013.01); Y02P 20/55 (2015.11);
Abstract

A process for preparing a diazabicyclooctane compound represented by the following formula (I): wherein A represents RcO—; B represents NH or NCalkyl; C represents a benzyl group; Rc represents a Calkyl group; A is substituted with one substituent Fn1, wherein Fn1 represents an azetidine group; the process including: (a) silylating the compound represented by the following formula (IV-c): wherein in the formula (IV-c), OBn represents benzyloxy, and (b) carrying out an intramolecular urea formation reaction.

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