申请人:Eli Lilly and Company
公开号:US04500456A1
公开(公告)日:1985-02-19
4-Fluoroazetidinone antibacterial agents are provided by a process comprising the reaction of an azetidinone-4-sulfinic acid, or a salt thereof, with perchloryl fluoride (FClO.sub.3) at -80.degree. C. to -25.degree. C., e.g., p-nitrobenzyl 3-methyl-2-(2-oxo-4-sulfino-3-phenoxyacetamido-1-azetidinyl-3-butenoate is reacted with FClO.sub.3 to provide corresponding 4-fluoroazetidinone. The latter is isomerized with a tertiary amine to corresponding 2-butenoate which a carboxy group deprotection provides an antibacterial compound.
4-氟 Azetidinone 抗菌剂是通过一种包括将 Azetidinone-4-磺酰酸或其盐与过氯酸氟 (FClO3) 在 -80°C 至 -25°C 下反应的过程提供的,例如,对硝基苄基 3-甲基-2-(2-氧代-4-磺酰氧基-3-苯氧乙酰胺-1-氮杂环丁基-3-丁烯酸酯与 FClO3 反应,以提供相应的 4-氟 Azetidinone。后者与三级胺异构化,以提供相应的 2-丁烯酸酯,然后通过脱除羧基保护提供一种抗菌化合物。