Novel Synthetic Route of a Pivotal Intermediate for the Synthesis of 1β-Methyl Carbapenem Antibiotics
作者:Yuan Yu、Wu-Chun Zhou、Ji Zhang、Mei Zhang、Da-Yong Xu、Yun Tang、Bo-Gang Li、Xiao-Qi Yu
DOI:10.1021/op0600714
日期:2006.7.1
A novel synthetic method using an original and practical procedure for the preparation of the N-PNZ protected 2-aminomethylpyrrolidin-4-ylthio-containing side chain of doripenem hydrate (S-4661), a new parenteral 1β-methylcarbapenem antibiotic, is described. trans-4-Hydroxy-l-proline was converted through an efficient process to (2S,4S)-4-acetylthio-2-(N-sulfamoyl-4-nitro-benzyloxycarbonyl-aminome
描述了一种新颖且新颖的合成方法,该方法采用新颖而实用的方法制备了新的肠胃外1β-甲基卡巴培南抗生素-多苯培南水合物(S-4661)的N -PNZ保护的2-氨基甲基吡咯烷丁-4-基硫基含侧链。反式-4-羟基-1-脯氨酸通过有效过程转化为(2 S,4 S)-4-乙酰硫基-2-(N-氨磺酰基-4-硝基苄氧基羰基-氨基甲基)-1-(4-硝基苄氧基羰基)吡咯烷的两步法总产率为60-70%。此过程无需色谱纯化,无需低温,无需卤代烷烃溶剂且操作时间较短,并且可以避免酸水解带来的副反应。此外,获得的产物是晶体而不是油,这使其成为中试规模量化中的优势。用这种方法制备了几公斤的侧链。