Kaken Pharmaceutical Company, Ltd.

Yoshitake Sumikawa

Noriyuki Kamei

Daigo Kamimura

Shingo Todo

Shota Tokuoka

Takuya Yamada

Issei Akahoshi

Keiichiro Fukushima

Takuya Imazu

Ryota Kotaka

Sadayoshi Furuta

A heteroaromatic amide derivative or salt thereof showing high efficacy for diseases associated with Nav1.7 is represented by general formula (I)

Heteroaromatic amide derivative and medicament containing the same

A method for producing (R)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione, the method comprising, (a) a step for isolating an isomer represented by formula (2) from a mixture of isomers represented by formula (1), and (b) a step for obtaining (R)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione by removing the menthyloxycarbonyl group from the compound represented by formula (2), which was isolated in step (a).

Method for producing (R)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione and intermediate for producing same

General formula (I): The present invention pertains to: a pyridone derivate or a salt thereof represented by general formula (I); or a medicine containing the pyridone derivative or salt thereof as an active ingredient. [In the formula, ring A, R, R, Rand Rare specific groups.] 

Pyridone derivative, pharmaceutical containing the same and methods of use thereof

Provided is (+)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione or a salt thereof. Also provided is a drug containing as the active ingredient (+)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione or a salt thereof.

(+)-5-(3,4-difluorophenyl)-5-[(3-methyl-2-oxopyridin-1(2H)-yl)methyl]imidazolidine-2,4-dione and drug containing same

Pyridone derivative and pharmaceutical containing same

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Kyoto, Japan

Yoshitake Sumikawa