- PROCESS FOR PREPARING COMPOUND HAVING HIV INTEGRASE INHIBITORY ACTIVITY
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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 is hydrogen, halogen, or the like; R2d is hydrogen, a lower alkyl optionally substituted with substituent E, or the like; R4d is a lower alkyl optionally substituted with substituent E, or the like; and R6d is a lower alkyl group optionally substituted with substituent group E, or the like].
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Paragraph 0145
(2013/06/27)
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- METHOD OF PRODUCING PYRONE AND PYRIDONE DERIVATIVES
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The present invention provides a pyrone derivative and a pyridone derivative, which are novel intermediates for synthesizing an anti-influenza drug, a method of producing the same, and a method of using the same.
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Page/Page column 28
(2012/02/03)
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