METHOD OF PURIFYING LIPOPEPTIDE (OPTIONS) AMD ANTIBIOTIC COMPOSITION BASED ON PURIFIED LIPOPEPTIDE (OPTIONS) Russian patent published in 2007 - IPC C12P21/00 C07K2/00 A61K38/00 C12R1/46 

FIELD: pharmaceutical chemistry and biotechnology.

SUBSTANCE: invention relates to highly purified lipopeptide antibiotic and pharmaceutical compositions comprising this compound. Invention also discloses daptomycin purification method including a series of consecutive stages of anion-exchange chromatography, hydrophobic chromatography, and anion-exchange chromatography as well as a method for purification of daptomycin using anion-exchange chromatography enhanced by modified buffer. Invention discloses improved method for production of daptomycin via fermentation of Streptomyces roseosporus followed by purification stage. Invention further discloses using high-efficiency liquid chromatography methods for checking purity of daptomycin. Disclosed are likewise lipopeptide micelles and methods for making these micelles as well as use of lipopeptide micelles in purification of lipopeptide antibiotics, such as daptomycin, and therapeutical application thereof. Invention allows preparation of lipopeptide antibiotics with 95 to 98% purity.

EFFECT: increased antibacterial activity of lipopeptide antibiotics against gram-positive microflora.

68 cl, 19 dwg, 3 tbl, 18 ex