Eisai R&d Management Co., Ltd.

Mai Miyamoto

Sadaharu Kotani

Kanta Horie

Yukio Ishikawa

Edgar Schuck

Robert Lai

Ishani Savant Landry

Bhaskar Rege

There is provided a therapeutic agent for Alzheimer's disease and Lewy body dementia for combined use of (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinoline-4(5H)-one represented by formula (1): or a pharmaceutically acceptable salt thereof, and donepezil represented by formula (II): or a pharmaceutically acceptable salt thereof.

Dementia therapeutic agent combining pyrazoloquinoline derivative and donepezil

The present invention provides a pharmaceutical composition comprising a PDE9 inhibitor. Specifically, the PDE9 inhibitor is (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quin olin-4(5H)-one or pharmaceutically acceptable salts thereof.

Pharmaceutical composition comprising PDE9 inhibitor

Provided is a therapeutic agent for Lewy body disease comprising (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinolin-4(5H)-one represented by formula (I) or a pharmaceutically acceptable salt thereof.

Lewy body disease therapeutic agent containing pyrazoloquinoline derivative

There is provided a therapeutic agent for Alzheimer's disease for combined use of (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinoline-4(5H)-one represented by formula (I): or a pharmaceutically acceptable salt thereof, and memantine represented by formula (II): or a pharmaceutically acceptable salt thereof.

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Tsukuba, Japan

Mai Miyamoto