第 46 卷第 6 期Vol. 46 No. 6
2016 年 12 月Dec 2016

所属栏目:医药及中间体

依福地平中间体的合成工艺改进
李鹏坤1,于玉振1,赵 曼1,陈芳芳1,李 雯2,3,4* (1. 郑州大学 化工与能源学院,河南 郑州 450001;2. 郑州大学 药学院,河南 郑州 450001;3. 药物关键制备技术教育部重点实验室,河南 郑州 450001;4. 新药创制与药物安全性评价河南省协同创新中心,河南 郑州 450001)
摘 要:以N-苄基苯胺为原料,经亲核取代、酯胺交换和氨基取代3步反应得到依福地平关键中间体3-氨基-2-丁烯酸-2-(N-苄基-N-苯基)氨基乙酯(氨基片段)。酯交换一步采用碱性催化剂替代原工艺中酸性催化剂;氨基取代一步添加ZSM-5分子筛催化,并采用不锈钢曝气头取代原工艺中导气管。新工艺缩短了反应的时间,降低了氨气的用量,提高了反应收率。改进后的工艺,总收率提高至72.4%,较原工艺提高了9.0%,生产成本降低,操作简便易行,适合工业化生产。
关键词:依福地平;N-苄基苯胺;氨基取代
中图分类号:R972  文献标识码:A  文章编号:1009-9212(2016)06-0038-03
Improvement in the Synthesis of Efonidipine Intermediate
LI Peng-kun1, YU Yu-zhen1, ZHAO Man1, CHEN Fang-fang1, LI Wen2,3,4* (1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China; 2. School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China; 3. Key Laboratory of State Ministry of Education for Pharmaceutical Technology, Zhengzhou 450001, China; 4. Collaborative Innovation Center of New Drug Research and Safety Evaluation; Zhengzhou 450001, China)
Abstract:The key intermediate of [2-(N-benzyl-N-phenyl)amin]ethyl-3-amino-2-butenoat was obtained from N-benzeneimine via the nucleophilic substitution, transesterification and amino substitution. In the transesterification step, the alkaline catalyst was used to replace the acidic catalyst in the original process. the ZSM-5 molecular sieve catalysis and stainless steel aerator was added In the step of amino substitution. The new process shortens the reaction time, reduces the amount of ammonia, and improves the reaction yield. The total yield is increased to 72.4%, 9.0% higher than the original process. The production cost is reduced, the operation is simple and easy, and the method is suitable for industrial production.
Key words:efonidipine; N-benzeneimine amino substituted
基金项目:河南省科技厅产学研合作项目(152107000043),河南省教育厅科学技术研究重点项目(14A530007)。
作者简介:李鹏坤(1991-),男,河南平顶山人,硕士,研究方向:精细有机合成(E-mail:915854055@qq.com)。
联 系 人: 李雯,教授(E-mail:liwen@zzu.edu.cn)。
收稿日期:2016-12-15