第 53 卷第 3 期Vol. 53 No. 3
2023 年 6 月Jun 2023

所属栏目:医药及中间体

(3,5,6-三甲基吡嗪-2-基)甲胺的合成
徐小娜1,张 婧1,王晓霞1,仝红娟2,朱周静2 (1. 咸阳职业技术学院 医药化工学院,陕西 咸阳 712000;2. 咸阳市分子影像与药物合成重点实验室 陕西国际商贸学院医药学院,陕西 咸阳 712046)
摘 要:报道一种川芎嗪衍生物(3,5,6-三甲基吡嗪-2-基)甲胺的合成方法。以(3,5,6-三甲基吡嗪-2-基)甲醇(2)为原料,与叠氮磷酸二苯酯(DPPA)反应得到2-叠氮甲基-3,5,6-三甲基吡嗪(3),再经钯/碳加氢还原得到目标化合物。产物及中间体结构经1H NMR、13C NMR、IR和ESI-MS表征确证。结果表明,叠氮化反应的优化条件为n(DPPA)∶n(2)=1.2∶1.0、反应温度25 ℃、反应时间5 h,还原反应的优化条件为反应溶剂甲醇、钯碳用量为3质量的10%、反应时间1 h。
关键词:川芎嗪衍生物;叠氮化反应;还原反应
中图分类号:TQ463  文献标识码:A  文章编号:1009-9212(2023)03-0027-03
Synthesis of (3,5,6-Trimethylpyrazin-2-yl)methanamine
XU Xiao-na1, ZHANG Jing1, WANG Xiao-xia1, TONG Hong-juan2, ZHU Zhou-jing2 (1. School of Pharmaceutical & Chemical Engineering, Xianyang Vocational Technical College, Xianyang 712000, China; 2. Xianyang Key Laboratory of Molecular Imaging and Drug Synthesis, School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xianyang 712046, China)
Abstract:The process for the synthesis of Ligustrazine derivative (3,5,6-trimethylpyrazin-2-yl)methanamine was reported. The intermediate 2-azide methyl-3,5,6-trimethylpiperazine (3) was obtained from the reaction of (3,5,6-trimethylpyrazin-2-yl)methanol (2) with DPPA. Then, the target compound was obtained through Pd/C hydroreduction. The structure of the product and intermediate were characterized by 1H NMR, 13C NMR, IR and ESI-MS. The reaction conditions were investigated and found that the optimum conditions for azide reaction were as followings: the ratio of n(DPPA)∶n(2) at 1.2∶1.0, the reaction time of 5 h at 25 ℃. The optimum conditions for reduction reaction were as following: methanol as the reaction solvent, 10% of the mass of 3 as the dosage of Pd/C, and the reaction time of 1 h.
Key words:Ligustrazine derivatives; azide reaction; reduction reaction
基金项目:陕西省自然科学基础研究计划(面上)项目(2022JM-561),咸阳职业技术学院博士科研基金项目(2021BK01),陕西国际商贸学院“中药药效物质研究”创新团队资助项目(SSY18TD02)。
作者简介:徐小娜(1985—),女,讲师,博士,研究方向:天然产物结构修饰、有机合成及工艺、药物分子设计合成及活性研究(E-mail:xuxiaona@163.com)。
收稿日期:2023-04-23