2-氨基-6-(4-氟苄胺)-3-硝基吡啶是一种杂环衍生物,可用作医药中间体。
合成方法为了优化氟吡汀中间体2-氨基-3-硝基-6-(4-氟苄基氨基)吡啶(ANFP)的合成工艺,选择2,6-二氯-3-硝基吡啶作为起始原料,在2,6位进行选择性氨化和对氟苄胺胺化,最终获得中间体2-氨基-3-硝基-6-(4-氟苄基氨基)吡啶。此过程旨在获取适宜的合成工艺路线,以提高该中间体的产率,并最大限度地节约成本。
其合成反应式如下图所示:
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 6-amino-2-(4-fluorobenzylamino)-3-bromo-5-nitropyridine | 1422275-78-2 | C12H10BrFN4O2 | 341.139 |
—— | 3-nitro-6-p-fluorobenzylaminopyridin-2-ylaminoformic acid tert-butyl ester | 1609102-47-7 | C17H19FN4O4 | 362.361 |
—— | N6-(4-fluorobenzyl)pyridine-2,3,6-triamine | 112523-78-1 | C12H13FN4 | 232.26 |
乙酰氟吡汀 | D 13223 | 88874-11-7 | C14H15FN4O | 274.298 |
氟吡汀 | Flupirtine | 56995-20-1 | C15H17FN4O2 | 304.324 |
—— | tert-butyl N-[3-amino-6-[(4-fluorophenyl)methylamino]pyridin-2-yl]carbamate | 1609102-48-8 | C17H21FN4O2 | 332.378 |
—— | (5Z,8Z,11Z,14Z,17Z)-N-[2-amino-6-[(4-fluorophenyl)methylamino]pyridin-3-yl]icosa-5,8,11,14,17-pentaenamide | 1482053-40-6 | C32H41FN4O | 516.702 |
—— | tert-butyl 6-(4-fluorobenzylamino)-2-aminopyridin-3-ylcarbamate | —— | C17H21FN4O2 | 332.378 |
—— | phenyl (2-amino-6-((4-fluorobenzyl)amino)pyridin-3-yl)carbamate | —— | C19H17FN4O2 | 352.368 |
A previously unknown dimer of the well-established analgesic flupirtine has been found, and its structure was revealed by ESI-MS, NMR spectroscopy and an independent synthesis. Thus, starting from 2-amino-6-chloro-3-nitro-pyridine the target compound was obtained in a four-step synthesis. Key-step of this synthesis is a nickel-mediated aryl-aryl coupling. The dimer 4 did not show any cytotoxicity, and its IC50 values were > 30 μm for all six human cancer cell lines and mouse fibroblasts used in this study