(8S,11S,14S)-14-Amino-11-(3-aminopropyl)-5-fluoro-17-hydroxy-9-methyl-10,13-dioxo-9,12-diazatricyclo[14.3.1.12,6]henicosa-1(20),2(21),3,5,16,18-hexaene-8-carboxylic acid dihydrochloride 、
二碳酸二叔丁酯 在
sodium hydroxide 作用下,
以
甲醇 、
水 为溶剂,
生成
(8S,11S,14S)-14-tert-butoxycarbonylamino-11-(3-tert-butoxycarbonylamino-propyl)-5-fluoro-17-hydroxy-9-methyl-10,13-dioxo-9,12-diaza-tricyclo-[14.3.1.12,6]henicosa-1(20),2(21),3,5,16,18-hexaene-8-carboxylic acid