ANTIBIOTIC GE23077, ITS PHARMACEUTICALLY ACCEPTABLE SALT AND COMPOSITION AND USE THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain an antibiotic GE23077 complex, a mixture of factors constituting the complex and to provide a method for producing the antibiotic. SOLUTION: This cyclic peptide is represented by the formula. The peptide is obtained by culturing Actinomadura sp. DSMZ13491 or GE23077 productive variant or mutant and isolating and purifying the antibiotic from the medium.