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US 4,399,066 AGranted
Novel peptide, process for preparation thereof and use thereof
AssigneeFujisawa Pharmaceutical Co., Ltd.
InventorsOsamu Nakaguchi, Satoshi Okada, Masashi Hashimoto
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Abstract
The invention deals with novel peptides useful for the therapeutic treatment of infectious diseases caused by pathogenic microorganisms, having the structure: ##STR1## wherein R.sup.1 is hydrogen or acyl, R.sup.2 is lower alkyl, R.sup.3 is carboxy or protected carboxy, R.sup.4 is hydroxy(lower) alkyl, R.sup.5 is carboxy or protected carboxy, R.sup.6 is carboxy or protected carboxy, and R.sup.7 is hydrogen or an amino protective group and their therapeutically acceptable salts.
Claims3
A compound of the following formula or its pharmaceutically acceptable salt:
- ##STR10## wherein R.sup.1 is hydrogen or acyl,
- wherein acyl is selected from the group consisting of alkanoyl and aralkanoyl either of which may be substituted with halogen, hydroxy, protected hydroxy, carboxy, or amino,
- R.sup.2 is lower alkyl,
- R.sup.3 is carboxy or protected carboxy,
- R.sup.4 is hydroxy(lower) alkyl,
- R.sup.5 is carboxy or protected carboxy,
- R.sup.6 is carboxy or protected carboxy, and
- R.sup.7 is hydrogen or an amino protective group.
5 more elements
Dependencies are inferred from the claim text.