LEVOISOVALERYLSPIRAMYCIN I,II,III AND PREPARATIONS,PREPARATION METHODS AND USES THEREOF

摘要

Disclosed are levoisovalerylspiramycin I, II or III, preparations, preparing methods and uses thereof. The preparations comprise levoisovalerylspiramycin I, II or III and pharmaceutically acceptable carrier and/or adjuvant, wherein the purity of levoisovalerylspiramycin I, II or III is above 90 wt%. The levoisovalerylspiramycin I, II or III has a good antibacterial activity, and the preparations include solution for injection, powder for injection or lyophilized powder for injection.