Toyama Chemical Co., Ltd.

Seietsu Kuroda

Isamu Saikawa

Shuntaro Takano

Kaishu Momonoi

Takashi Yasuda

Yutaka Kodama

Okuta Takashima

Miwako Komatsu

Chosaku Yoshida

Isamu Takakura

Kiyoshi Tanaka

Kenshin Hayashi

Chiaki Kutani

Bunei Nagahashi

Kyoko Kasuya

Novel penicillins and cephalosporins and non-toxic salts thereof, which contain a mono- or di-oxo- or thioxo-piperazino(thio)carbonylamino group in molecule. These compounds are valuable antibacterial compounds for use in mammals including man. This disclosure relates to such compounds and a process for the preparation thereof.

Cephalosporins

This disclosure relates to a novel process for producing 7-(substituted)amino-3-substituted thiomethyl cephem carboxylic acids which are intermediate products of cephalosporins being valuable antibacterial compounds for use in mammals including man.

Process for producing 7-(substituted)amino-3-substituted thiomethyl

Novel penicillins and cephalosporins and non-toxic salts thereof, which contain a mono- or di-oxo- or thioxo-piperazino(thio)carbonylamino group have been prepared. These compounds are valuable anti-bacterial compounds for use in mammals including man. A process for the preparation of the compounds has also been discovered.

Novel penicillins

This disclosure relates to a novel process for producing 7-(substituted)-amino-3-substituted thiomethyl-.DELTA..sup.3 -cephem-4-carboxylic acids which are intermediate products of cephalosporins being valuable antibacterial compounds for use in mammals including man.

Process for producing 7-(substituted)amino-3-substituted

Novel penicillins and non-toxic salts thereof, which contain a mono- or di-oxo- or thioxo-piperazino(thio)carbonylamino group have been prepared. These compounds are valuable antibacterial compounds for use in mammals including man. A process for the preparation of the compounds has also been discovered.

Novel penicillins and cephalosporins and process for producing same

Novel penicillins and cephalosporins and non-toxic salts thereof, which contain a mono- or di-oxo- or thioxo-piperazino(thio)carbonylamino group have been prepared. These compounds are valuable antibacterial compounds for use in mammals including man. A process for the preparation of the compounds has also been discovered.

Novel penicillins and cephalosporins and process for producing the same

2,3 Diketo-piperazinocarbonylamino alkanoic acids and derivatives

Novel bis-type penicillins containing a (thio)acylureido group in the molecule, which are valuable antibacterial compounds for use in mammals including a human being. This disclosure relates to such compounds and a process for the preparation thereof.

Growing community of inventors

Toyama, Japan

Seietsu Kuroda