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【结 构 式】

【药物名称】FK-3311

【化学名称】4-Acetyl-2-(2,4-difluorophenoxy)methanesulfonanilide
      3-(2,4-Difluorophenoxy)-4-(methanesulfonamido)acetophenone
      N-[4-Acetyl-2-(2,4-difluorophenoxy)phenyl]methanesulfonamide

【CA登记号】116686-15-8

【 分 子 式 】C15H13F2NO4S

【 分 子 量 】341.33596

【开发单位】Fujisawa (Originator)

【药理作用】Antiarthritic Drugs, TREATMENT OF MUSCULOSKELETAL & CONNECTIVE TISSUE DISEASES, Cyclooxygenase-2 Inhibitors, Non-Steroidal Antiinflammatory Drugs

合成路线1

This compound has been obtained by two different ways: 1) The oxidation of 4'-amino-3'-chloroacetophenone (I) with NaNO2 and HCl in water gives 3'-chloro-4-nitroacetophenone (II), which is condensed with 2,4-difluorophenol (III) by means of K2CO3 in xylene yielding 3'-(2,4-difluorophenyl)-4'-nitroacetophenone (IV). The reduction of (IV) with Fe and NH4Cl in ethanol affords the corresponding 4'-amino compound (V), which is finally treated with methanesulfonyl chloride and pyridine. 2) The reaction of 4'-aminoacetophenone (VI) with methanesulfonyl chloride as before gives the corresponding sulfonamide (VII), which is brominated with Br2 in acetic acid yielding N-(4-acetyl-3-bromophenyl)methanesulfonamide (VIII). Finally, this compound is condensed with 2,4-difluorophenol (III) by means of K2CO3 and CuCl as before.

1 Zanka, A.; et al.; Process development of a novel anti-inflammatory agent. The regiospecific bromination of 4'-acetylmethanesulfonanilide. Org Process Res Dev 1998, 2, 2, 71.
2 Tsuji, K.; et al.; Studies on antiinflammatory agents. I. Synthesis and pharmacological properties of 2'-phenoxymethanesulfonanilide derivatives. Chem Pharm Bull 1992, 40, 9, 2399.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 33161 1-(4-amino-3-chlorophenyl)-1-ethanone C8H8ClNO 详情 详情
(II) 33162 1-(3-chloro-4-nitrophenyl)-1-ethanone C8H6ClNO3 详情 详情
(III) 21486 2,4-difluorophenol 367-27-1 C6H4F2O 详情 详情
(IV) 33163 1-[3-(2,4-difluorophenoxy)-4-nitrophenyl]-1-ethanone C14H9F2NO4 详情 详情
(V) 33164 1-[4-amino-3-(2,4-difluorophenoxy)phenyl]-1-ethanone C14H11F2NO2 详情 详情
(VI) 27847 1-(4-aminophenyl)-1-ethanone 99-92-3 C8H9NO 详情 详情
(VII) 33165 N-(4-acetylphenyl)methanesulfonamide C9H11NO3S 详情 详情
(VIII) 33166 N-(4-acetyl-2-bromophenyl)methanesulfonamide C9H10BrNO3S 详情 详情
Extended Information