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作 者:张义凤[1] 陈昊[2] 彭久合[2] 高瑞昶[1] 张广明[2]
机构地区:[1]天津大学化工学院,天津300072 [2]天津天士力集团有限公司研究院化学所,天津300400
出 处:《中国药科大学学报》2007年第4期305-310,共6页Journal of China Pharmaceutical University
基 金:国家发改委国家认定企业技术中心创新能力专项(2005年)资助项目~~
摘 要:目的:合成碳青霉烯类抗生素厄他培南。方法:以4R-羟基-L-脯氨酸(1)为原料,在碱性条件下与氯甲酸对硝基苄酯反应,得到氨基保护的4R-羟基-L-脯氨酸(3)。经氯甲酸异丙酯活化化合物3的羧羟基后胺解,所得中间体4用甲烷磺酰氯酰化得到化合物(5)。化合物5与硫代醋酸钾置换得到4-羟基构型反转的化合物(6),化合物6经碱性水解,得到厄他培南侧链(7)。侧链7与培南母核MAP(12)反应,得到保护的厄他培南(13),再经催化氢化得到目的物厄他培南(14)。结果:以4R-羟基-L-脯氨酸(1)为原料,合成了对硝基苄氧羰基保护的厄他培南侧链(7),进而制备了碳青霉烯类抗生素厄他培南。结论:此方法原料易得、反应条件温和、成本低,易于放大生产。Aim: To synthesize carbapenem antibiotic ertapenem. Methods: Protection of 4R-hydroxyl-L-proline (1) with p-nitrobenzylchloroformate gave the N-protected 4R-hydroxyl-L-proline (3), the carboxyl group of which was activated with i- propanylchloroformate; then aminolysis of the mix- anhydride with p - nitrobenzyl- m-aminobenzoate ( 11 ) gave compound 4. Displacement of the methanesulfonate with potassium thioacetate in DMF furnished compound 6, which was hydrolysized under basic condition to give the key intermediate 7. Condensation of side chain 7 with MAP to give the protected ertapenem (13), which was hydrogenated to give the target compound 14. Results: The synthesis of ertapenem side chain (7) starting from 4R-hydroxyl- L-proline (1) and ertapenem (14) was reported. Conclusion: The reported process for the synthesis of ertapenem has the advantages such as readily available starting materials, mild reaction conditions, low cost and easily scaled-up capability.
关 键 词:厄他培南 碳青霉烯 培南母核 4R-羟基-L-脯氨酸 合成
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