II III LEVOISOVALERYLSPIRAMYCIN II OR III PREPARATIONS PREPARATION METHODS AND USES THEREOF

摘要

Levoisovaleryl spiramycin I, II or III, a preparation thereof, a preparation method and uses thereof. The formulation contains levoisobaleryl spiramycin I, II or III and a pharmaceutically acceptable carrier and / or adjuvant, and the purity of levoisovaleryl spiramycin I, II or III is at least 90 wt%. The levoisobaleryl spiramycin I, II or III has a good antibacterial activity and the preparation includes injectable solutions, injectable powders or lyophilized powders.