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US 4,362,665 AGranted
Antibiotic PA-39504-X.sub.1 and production thereof
AssigneeShionogi & Co., Ltd.
InventorsKentaro Tanaka, Eiji Kondo, Kouichi Matsumoto, Jun'ichi Shoji, Naoki Tsuji
Life of this patent
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Abstract
A new antibiotic having .beta.-lactamase inhibitory activity, PA-39504-X.sub.1 of the formula: ##STR1## being useful as a medicament and a veterinary drug for inhibiting the growth of gram-positive and gram-negative pathogenic microorganisms and a process for preparing the same, being characterized by cultivating Streptomyces argenteolus PA-39504 or Streptomyces tokunonensis PA-31088 in a suitable medium and recovering PA-39504-X.sub.1 from the cultured broth.
Claims2
An antibiotic PA-39504-X.sub.1 of the formula:
- ##STR3## or a pharmaceutically acceptable salt thereof.
Dependencies are inferred from the claim text.