Back to results
US 4,399,067 AGranted
Derivatives of A-21978C cyclic peptides
AssigneeEli Lilly and Company
InventorManuel Debono
Life of this patent
Estimating the term…
Abstract
A-21978C cyclic peptide derivatives of the formula ##STR1## wherein R is a substituted benzoyl group of the formula ##STR2## R.sup.2 is C.sub.8 -C.sub.15 alkyl; X is hydrogen, chloro, bromo, iodo, nitro, C.sub.1 -C.sub.3 alkyl, hydroxy, C.sub.1 -C.sub.3 alkoxy, or C.sub.1 -C.sub.3 alkylthio; and R.sup.1 is hydrogen or an amino-protecting group; and the salts thereof, are useful new semisynthetic antibacterial agents or intermediates to such agents.
Claims8
An A-21978C cyclic peptide derivative of the formula:
- ##STR14## wherein R is a substituted benzoyl group of the formula ##STR15## R.sup.2 is C.sub.8 -C.sub.15 alkyl;
- X is hydrogen, chloro, bromo, iodo, nitro, C.sub.1 -C.sub.3 alkyl, hydroxy, C.sub.1 -C.sub.3 alkoxy, or C.sub.1 -C.sub.3 alkylthio;
- and R.sup.1 is hydrogen or an amino-protecting group;
- and the salts thereof.
1 more element
Dependencies are inferred from the claim text.