Derivatives of A-21978C cyclic peptides
USRE32310E · kind E · reissue
24Cited by
9References
8Claims
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Key dates
| Filing date | Sep 23, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 23, 2005 |
Classification
- Technology area (CPC —)General
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.