中兽医医药杂志
中獸醫醫藥雜誌
중수의의약잡지
Journal of Traditional Chinese Veterinary Medicine
2012年
2期
20-21
,共2页
任学军%郑玉林%张道凌%管海英
任學軍%鄭玉林%張道凌%管海英
임학군%정옥림%장도릉%관해영
培南类%中间体%合成
培南類%中間體%閤成
배남류%중간체%합성
bovine clinical mastitis%pathogenic bacteria%isolation%identification%drug sensitive test
以4-乙酰氧基氮杂环丁酮(2)为母核,与手性合成辅助剂溴丙酰基-螺环[2H-1,3-苯并噁嗪-2,1'-环己基]-3(4H)-酮(3)进行取代反应,水解得培南类关键中间体(3S,4S)-4-([R)-1-羰基乙基]-3-([R)-1-(t-丁基二甲基硅烷氧基)乙基]-2-丙内酰胺(1),总收率约为81%~87.6%[以4-乙酰氧基氮杂环丁酮(2)计]。
以4-乙酰氧基氮雜環丁酮(2)為母覈,與手性閤成輔助劑溴丙酰基-螺環[2H-1,3-苯併噁嗪-2,1'-環己基]-3(4H)-酮(3)進行取代反應,水解得培南類關鍵中間體(3S,4S)-4-([R)-1-羰基乙基]-3-([R)-1-(t-丁基二甲基硅烷氧基)乙基]-2-丙內酰胺(1),總收率約為81%~87.6%[以4-乙酰氧基氮雜環丁酮(2)計]。
이4-을선양기담잡배정동(2)위모핵,여수성합성보조제추병선기-라배[2H-1,3-분병오진-2,1'-배기기]-3(4H)-동(3)진행취대반응,수해득배남류관건중간체(3S,4S)-4-([R)-1-탄기을기]-3-([R)-1-(t-정기이갑기규완양기)을기]-2-병내선알(1),총수솔약위81%~87.6%[이4-을선양기담잡배정동(2)계]。
The key penems intermediate of(3S,4S)-4-[(1R)-1-Carboxyethyl]-3-[(1R)-1-(t-Buthyldime-thylsilyloxy) ethyl]-2-azetidione was synthesized from(3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyl-oxy)ethyl]azetidin-2-one with chiral synthesis auxiliary agent 3-(2-bromopropanoyl)spiro[benzo[e]o-xazine-2,1'-cyclohexan]-4(3H)-one by substitution reaction,followed by hydrolysis.The overall yield was about 81%~87.6%(based on compound 2).