第 51 卷第 5 期Vol. 51 No. 5
2021 年 10 月Oct 2021

所属栏目:医药及中间体

阿伐那非中间体N-1的合成及其相关杂质研究
胡华南1,2,吴秀荣2,黄华南1,2,彭 游1,严 平1,叶友余2 (1. 九江学院 化学化工学院,江西 九江 332005;2. 九江善水科技股份有限公司,江西 九江 332700)
摘 要:为加强对阿伐那非原料药的质量控制,研究了阿伐那非中间体N-1的合成及其工艺杂质A、B和C引入的原因,并合成了阿伐那非中间体N-1杂质A、B和C。以4-氯-2-甲硫基嘧啶-5-羧酸乙酯(1)为起始原料,经过取代和氧化等反应得到阿伐那非中间体N-1,氧化物继续与3-氯-4-甲氧基苄胺(2)反应得到杂质B,氧化物在碱性条件下水解得到杂质C,4-氯-2-甲硫基嘧啶-5-羧酸乙酯(1)与4-甲氧基苄胺经过取代和氧化等反应得到杂质A,目标化合物的结构经过NMR与MS确证,纯度达97.5%以上(HPLC),可作为阿伐那非中间体N-1质量控制的杂质对照品。
关键词:阿伐那非;PDE5抑制剂;杂质
中图分类号:R914  文献标识码:A  文章编号:1009-9212(2021)05-0031-04
Synthesis of Avanafil Intermediate N-1 and Its Related Impurities
HU Hua-nan1,2, WU Xiu-rong2, HUANG Hua-nan1,2, PENG You1, YAN Ping1, YE You-yu2 (1. College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; 2. Jiujiang Shanshui Technology Co., Ltd., Jiujiang 332700, China)
Abstract:In order to strengthen the quality control of avanafil API, study on synthesis of avanafil intermediate N-1 and the reason of its A, B and C impurities that are introduced, and the synthesis of intermediate N-1 avanafil impurities A, B and C. Using ethyl 4-chloro-2-methylthiopyrimidine-5-carboxylate(1) as the starting material, avanafil intermediate N-1 was obtained through substitution, oxidation reaction, the oxide continued to react with 3-chloro-4-methoxybenzylamine(2) to obtain impurity B, the oxide is hydrolyzed under alkaline conditions to obtain impurity C, Ethyl 4-chloro-2-methylthiopyrimidine-5-carboxylate (1) reacted with 4-methoxybenzylamine to obtain impurity A, the structure of the target compound by NMR and MS spectra, HPLC detection of purity was more than 99.5 %, can be used as intermediate avanafil N-1 quality control of impurity reference.
Key words:Avanafil; PDE5 inhibitors; impurity
基金项目:江西省教育厅科技项目(GJJ170962),国家自然科学基金项目(81660541)。
作者简介:胡华南(1976—),男,江西九江人,副教授,博士,研究方向:有机及药物中间体的合成(E-mail:hhn12192000@126.com)。
收稿日期:2021-08-03