Astellas Pharma Gmbh

Wakunaga Pharmaceutical Co., Ltd.

Kenji Satoh

Kohji Kawabata

Satoshi Inoue

Hidenori Ohki

Shinya Okuda

Toshio Yamanaka

Kenji Itoh

Keiji Misumi

Ayako Toda

Hitomi Ogino, Legal Representative

Tetsuya Ogino, Legal Representative

Tomomi Takezawa, Legal Representative

Hisashi Akamatsu

Masaru Ohgaki

The present invention relates to a compound of the formula [I]: wherein A is lower alkylene or lower alkenylene; Ris lower alkyl, hydroxy(lower)alkyl, protected hydroxy(lower)alkyl, amino(lower)alkyl or protected amino(lower)alkyl, and Ris hydrogen or amino protecting group, or Rand Rare bonded together and form lower alkylene; Rand Rare independently amino or protected amino; and Ris carboxy or protected carboxy, or a pharmaceutically acceptable salt thereof, a process for preparing a compound of the formula [I], and a pharmaceutical composition comprising a compound of the formula [I] in admixture with a pharmaceutically acceptable carrier.

Cephem compounds

The present invention relates to a compound of the formula [I]: wherein 

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Akitakata, Japan

Kenji Satoh