6-[2-(3-amino-propoxy)-ethoxy]-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid 、
6-[2-(3-amino-propoxy)-ethoxy]-7-chloro-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid 、
2'-O-acetyl-11-O-methyl-4"-O-(1-imidazolyl-carbonyl)-azithromycin 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
甲醇 、 DMF (N,N-dimethyl-formamide) 为溶剂,
生成 4"-O-{3-[2-(3-carboxy-1-cyclopropyl-4-oxo-1,4-dihydro-quinolin-6-yloxy)-ethoxy]-propylcarbamoyl}-11-O-methylazithromycin 、 4"-O-{3-[2-(3-carboxy-7-chloro-1-cyclopropyl-4-oxo-1,4-dihydro-quinolin-6-yloxy)-ethoxy]-propylcarbamoyl}-11-O-methylazithromycin