第 49 卷第 4 期Vol. 49 No. 4
2019 年 8 月Aug 2019

所属栏目:医药及中间体

孤儿药吡非尼酮的合成与晶型研究
陈艳娇1,张 珩1*,王正雄2,杨艺虹1 (1. 武汉工程大学 化工与制药学院,湖北 武汉 430073;2. 湖北宏源药业科技有限公司 武汉研发中心,湖北 武汉 430206)
摘 要:以2-氨基-5-甲基吡啶为起始原料,经重氮化反应,水解后得到中间体2-羟基-5-甲基吡啶,在无水碳酸钾和碘化铜存在下与碘苯进行亲核取代反应,生成目标产物吡非尼酮,经工艺优化后反应总收率为66.6%,较文献报道收率提高了16.6%。终产物与中间体的结构经核磁共振氢谱、质谱确证。通过不同方法制备了吡非尼酮的三种不同晶型样品,改善了晶型的制备工艺,提出了新的晶型制备方法。采用粉末X射线衍射法、差示扫描量热法、红外光谱法对不同晶型进行了表征分析。
关键词:吡非尼酮;多晶型;稳定性;表征方法
中图分类号:TQ25  文献标识码:A  文章编号:1009-9212(2020)04-0045-05
Synthesis and Polymorphism of Pirfenidone
CHEN Yan-jiao1, ZHANG Heng1, WANG Zhen-xiong2, YANG Yi-hong1 (1. School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China; 2. HuBei Hongyuan Pharmacetical Technology Co., Ltd., Wuhan R&D Center , Wuhan 430206, China)
Abstract:Using 2-amino-5-methyl-pyridine as the starting material, 2-hydroxy-5-methyl-pyridine was obtained by diazotization and hydrolysis. Then, in the presence of anhydrous potassium carbonate and copper iodide, the reaction was carried out with iodobenzene to produce the target product named pirfenidone. The total yield of the reaction was 66.6%, this is an increase of 16.6% over that reported in the literature, and the structures of the final products and intermediates were confirmed by 1H NMR and EI-MS. Three forms of pirfenidone were prepared. The structure of the crystals was analyzed by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC) and the infrared spectrometry (IR).
Key words:pirfenidone; polymorphism; stability; identification method
作者简介:陈艳娇(1995—),女,湖北十堰人,硕士研究生,研究方向:药物合成与过程开放(E-mail:985918189@qq.com)。
联 系 人:张 珩,教授,研究方向:药物合成与过程开放(E-mail:zhzpthm@163.com)。
收稿日期:2020-07-28