Daiichi Pharmaceutical Co., Ltd.

Daiichi Seiyaku Co., Ltd.

Masayuki Ohshima

Isao Hayakawa

Shohgo Atarashi

Shuichi Yokohama

Masazumi Imamura

Katsuichi Sakano

Nobuyuki Higashihashi

An optically action pyridobenzoxazine derivative, a process for preparing the same and a novel intermediate useful for preparing the optically active pyridobenzoxazine derivative are disclosed. The optically active pyridobenzoxazine derivative possesses increased antimicrobial activity and reduced toxicity. The intermediate is useful for preparing such optically active pyridobenzoxazine derivatives such as Ofloxacin and anolog compounds.

Optically active pyridobenzoxazine derivatives and intermediates thereof

Optically active pyridobenzoxazine derivatives and anti-microbial use

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Tokyo, Japan

Masayuki Ohshima