Methods of producing substituted (4R,12AS)-7-hydroxy-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-carboxamides

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专利权人:

Shionogi & Co.; Ltd.

发明人:

Yukihito Sumino,Moriyasu Masui,Diasuke Yamada,Fumiya Ikarashi,Kazuya Okamoto

申请号：

US14518209

公开号：

US09321789B2

申请日:

2014.10.20

申请国别(地区):

US

年份:

2016

代理人:

摘要：

A process for preparing a compound represented by formula (Y1) or (Y2)wherein Rx is 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 R1d, R2d, and R4d are as defined herein.

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