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US 4,366,153 AGranted
Cephem compounds
AssigneeFujisawa Pharmaceutical Co., Ltd.
InventorsTakao Takaya, Takashi Masugi, Hisashi Takasugi, Hiromu Kochi
Life of this patent
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Abstract
Bacteriostatic cephem compounds and processes for preparing same having the formula: ##STR1## wherein R.sup.1 is amino; R.sup.2 is optionally substituted alkyl, C.sub.3-8 cycloalkyl, lower alkenyl, or lower alkynyl; R.sup.3 is amino and/or alkyl substituted heterocyclic group; and R.sup.4 carboxy.
Claims3
A syn compound of the formula:
- ##STR11## wherein R.sup.1 is amino,
- R.sup.2 is cyclopentyl,
- R.sup.3 is hydroxy(lower)alkyltetrazolyl,
- and R.sup.4 is carboxy,
- and its pharmaceutically acceptable salt.
2 more elements
Dependencies are inferred from the claim text.