Purification of dalbaheptide antibiotics by isoelectric focusing

摘要

PCT No. PCT/EP96/02769 Sec. 371 Date Dec. 18, 1997 Sec. 102(e) Date Dec. 18, 1997 PCT Filed Jun. 25, 1996 PCT Pub. No. WO97/02288 PCT Pub. Date Jan. 23, 1997Method for purifying antibiotic compounds of the dalbaheptide family by means of isoelectric focusing (IEF) in a multicompartinent electrolyzer with immobiline membranes, in particular zwitterionic membranes. A further object of the invention are pure antibiotic compounds obtainable according to the present process, in particular the pure 6B-decarboxy-6B-(hydroxymethyl)-N63-3-(dimethylamino) propyl amide derivatives of antibiotic A40926.