【结 构 式】 |
【药物名称】Pymadin, Fampridine, 4-Aminopyridine, EL-970, 4-AP, Fampridine-SR, Neurelan 【化学名称】4-Aminopyridine 【CA登记号】504-24-5 【 分 子 式 】C5H6N2 【 分 子 量 】94.11697 |
【开发单位】Elan (Orphan Drug), Rush Presbyterian-St. Luke's Med. Center (Originator), Acorda (Licensee), Elan (Formulation), Teva (Codevelopment) 【药理作用】Immunologic Neuromuscular Disorders, Treatment of, Lesions of the Spinal Cord and Related Structures, Treatment of, Multiple Sclerosis, Agents for, NEUROLOGIC DRUGS, Neurologic Drugs (Miscellaneous), Potassium Channel Blockers |
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Compound can be prepared in several different ways: 1) By treatment of pyridine-4-sulfonic acid (I) with NH4OH and ZnCl2 in an autoclave at 160 C. 2) By reduction of 4-nitropyridine (II) with SO2 in hot water or diluted H2SO4. 3) By treatment of pyridine-4-carboxylic acid (III) with NH3 at high temperature using CuO as catalyst. 4) By treatment of 4-chloropyridine (IV) or 3-chloropyridine (V) with KNH2 in liquid NH3. 5) By treatment of 4-iodopyridine (VI) or 3-iodopyridine (VII) with KNH2 in liquid NH3.
【1】 Pieterse, M.J.; Den Hertog, H.J.; Rearrangements during aminations of halopyridines, presumably involving a pyridine intermediate. Recl Trav Chim Pays-Bas 1961, 80, 1376-86. |
【2】 Suzuki, Y.; Reactions of 4-pyridine- and 4-quinolinesulfonic acids with amines. Yakugaku Zasshi 1961, 81, 1146-50. |
【3】 Hayashi, E.; Yamanaka, H.; JP 6115616 . |
【4】 Serradell, M.N.; Blancafort, P.; Castaner, J.; Paton, D.M.; 4-Aminopyridine. Drugs Fut 1980, 5, 5, 221. |
【5】 Rauch, F.C.; Arzoumanidis, G.G.; DE 2258227 . |
【6】 Rauch, F.C.; Arzoumanidis, G.G.; US 3812137 . |
【7】 Koenig, C.; et al.; DE 1270563 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
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(I) | 39036 | 4-pyridinesulfonic acid | C5H5NO3S | 详情 | 详情 | |
(II) | 39037 | 4-nitropyridine | C5H4N2O2 | 详情 | 详情 | |
(III) | 25028 | isonicotinic acid | 55-22-1 | C6H5NO2 | 详情 | 详情 |
(IV) | 32889 | 4-chloropyridine | 7379-35-3 | C5H4ClN | 详情 | 详情 |
(V) | 39038 | 3-chloropyridine | 626-60-8 | C5H4ClN | 详情 | 详情 |
(VI) | 39039 | 4-iodopyridine | C5H4IN | 详情 | 详情 | |
(VII) | 29108 | 3-iodopyridine | C5H4IN | 详情 | 详情 |
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