Taisho Pharmaceutical Co., Ltd.

Toyama Chemical Co., Ltd.

Fujifilm Toyama Chemical Co., Ltd.

Yoichiro Suga

Masato Takahashi

Hiroki Urabe

Tetsuya Yabuuchi

Hajime Takashima

Yusuke Oka

Hironori Kotsubo

Muneo Shoji

Fumito Uneuchi

Yasuko Kawaguchi

Risa Tsuruta

Provided is a novel compound which is useful as a pharmaceutical composition by inhibiting an LpxC activity, thereby exhibiting potent antimicrobial activity against gram-negative bacteria includingand its drug resistant bacteria. Provided is a hydroxamic acid derivative represented by the following general formula [1] or a pharmaceutically acceptable salt thereof. 

Hydroxamic acid derivative

Provided is a novel compound which is useful as a pharmaceutical composition by inhibiting an LpxC activity, thereby exhibiting potent antimicrobial activity against gram-negative bacteria includingand its drug resistant bacteria. Provided is a hydroxamic acid derivative represented by the following general formula [1] or a pharmaceutically acceptable salt thereof: 

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Toshima-ku, Japan

Yoichiro Suga