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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 10125147 B1

PDFFull Text
Date of Patent:
Nov. 13, 2018

Filed:

Sep. 20, 2017

Crystalline methyl (4r,12as)-7-(benzyloxy)-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2h-pyrido[1',2′:4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylate

Applicant:

Shionogi & Co., Ltd., Osaka-shi, Osaka, JP;

Inventors:

Yukihito Sumino, Osaka, JP;

Moriyasu Masui, Osaka, JP;

Daisuke Yamada, Osaka, JP;

Fumiya Ikarashi, Osaka, JP;

Kazuya Okamoto, Osaka, JP;

Assignee:

SHIONOGI & CO., LTD., , JP;

Attorney:

J. Scott Young

Primary Examiner:

Douglas M Willis

Int. Cl.
CPC ...
C07D 487/04 (2006.01); C07D 498/14 (2006.01); C07D 213/80 (2006.01); A61K 31/5365 (2006.01);
U.S. Cl.
CPC ...
C07D 498/14 (2013.01); A61K 31/5365 (2013.01); C07D 213/80 (2013.01); C07B 2200/13 (2013.01);
Abstract

A process for preparing a compound represented by formula (Y1) or (Y2) [wherein Ris an optionally substituted carbocyclyl lower alkyl, or the like] or a salt thereof, using a novel process for preparing a pyridone derivative represented by formula (X4) [wherein Ris hydrogen, halogen, or the like; Ris hydrogen, a lower alkyl optionally substituted with substituent E, or the like; Ris a lower alkyl optionally substituted with substituent E, or the like; and Ris a lower alkyl group optionally substituted with substituent group E, or the like].

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