A method for preparing high purity azithromycin is described characterised in that the intermediate 9a-deoxo-9a-aza-9a-homoerythromycin A is crystallised and obtained at very high purity, the subsequent methylation reaction effected on said intermediate proceeding with very high specificity and conversion enabling azithromycin of particularly high purity to be obtained.
申请公布号
WO03102009(A1)
申请公布日期
2003.12.11
申请号
WO2003IB02442
申请日期
2003.06.04
申请人
CHEMI S.P.A.;TURCHETTA, STEFANO;MASSARDO, PIETRO;CASELLATO, PAOLO
发明人
TURCHETTA, STEFANO;MASSARDO, PIETRO;CASELLATO, PAOLO