Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...
Patent
1980-04-07
1981-08-25
Rizzo, Nicholas S.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Bacterium or component thereof or substance produced by said...
544 28, C07D50120
Patent
active
042859395
ABSTRACT:
New cephalosporin derivatives represented by the general formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents hydroxy, acyloxy, and hydrogen provided that two or three of R.sub.1, R.sub.2, and R.sub.3 are not hydrogen at the same time, and their salts, and processes for the preparation thereof. The cephalosporin derivatives of the present invention are useful as antibacterial drugs.
REFERENCES:
patent: 4015000 (1977-03-01), Kocsis et al.
patent: 4101661 (1978-07-01), Kaltenbronn et al.
Katsu Kanemasa
Kitoh Kyosuke
Koizumi Kyoko
Machida Yoshimasa
Negi Shigeto
Eisai Co. Ltd.
Rizzo Nicholas S.
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