摘要
以二氢高红霉素、甲酸和甲醛为原料,乙酸乙酯为溶剂,经甲基化,萃取和重结晶,得到阿奇霉素二水合物,含量98.3%,收率:84.3%,产品符合USP34,EP7.0标准。
Azithromycin dihydrate was prepared from azaethromycin,formic acid and formaldehyde in ethyl acetate in 84.3% yield with purity of 98.3%,which conforms to the standard of USP34 and EP7.0.
出处
《精细化工中间体》
CAS
2012年第3期50-51,共2页
Fine Chemical Intermediates
关键词
阿奇霉素
抗生素
甲基化反应
结晶
azithromycin
antibiotic
methylation
crystallization