红霉素碱经肟化、保护再经甲基化、脱保护得到克拉霉素，总收率达40 %以上。
Clarithromycin was prepared from erythromycin a through oximation, protection, methylation and deprotection. The overall yield of clarithromycin was 40%.
方法110例解脲支原体泌尿道感染患者随机分为：阿奇霉素组、 罗红霉素组、克拉霉素组等3组。
Methods:110 cases of mycoplasma urealytium genitourinary tract infection were randomly divided into 3 groups, group Azithromycin, group Roxithromycin, group Clarithromycin.
方法110例解脲支原体泌尿道感染患者随机分为：阿奇霉素组、 罗红霉素组、克拉霉素组等3组。
Methods:110 cases of mycoplasma urealytium genitourinary tract infection were randomly divided into 3 groups, group Azithromycin, group Roxithromycin, group Clarithromycin.
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