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【结 构 式】 
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【分子编号】18386 【品名】benzyl 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]-1-piperazinecarboxylate 【CA登记号】 |
【 分 子 式 】C22H24FN3O5 【 分 子 量 】429.4481832 【元素组成】C 61.53% H 5.63% F 4.42% N 9.78% O 18.63% |
合成路线1
该中间体在本合成路线中的序号：(VII)Condensation of 3,4-difluoronitrobenzene (I) with an excess of piperazine (II) in refluxing acetonitrile yielded the 4-nitrophenylpiperazine (III), which was reduced to aniline (IV) by hydrogenation in the presence of Pd/C. Reaction with benzyl chloroformate provided the bis(carbamate) (V). This was treated with butyllithium at -78 C, and the resulting lithium salt was reacted with (R)-glycidyl butyrate (VI) to give chiral (R)-oxazolidinone (VII). Subsequent reaction with methanesulfonyl chloride, followed by displacement of the resulting mesylate with potassium phthalimide afforded the substituted phthalimide (VIII), which was deblocked with aqueous methylamine to give primary amine (IX). Further acetylation with Ac2O in pyridine yielded amide (IX) from which the N-carbobenzoxy group was removed by hydrogenolysis in the presence of Pd/C, providing the piperazine salt (XI). Alkylation of piperazine (XI) with 3,6-dichloropyridazine (XII) in DMF then gave the chloropyridazine derivative (XIII) and final hydrogenolysis of the halogen atom in the presence of palladium black yielded the title compound.
| 【1】 Brickner, S.J.; Hutchinson, D.K.; Barbachyn, M.R.; et al.; Synthesis and antibacterial activity of U-100592 and U-100766, two oxazolidinone antibacterial agents for the potential treatment of multidrug-resistant Gram-positive bacterial infections. J Med Chem 1996, 39, 3, 673. |
| 【2】 Tucker, J.A.; Allwine, D.A.; Grega, K.C.; Barbachyn, M.R.; Klock, J.L.; Adamski, J.L.; Brickner, S.J.; Hutchinson, D.K.; Ford, C.W.; Zurenko, G.E.; Conradi, R.A.; Burton, P.S.; Jensen, R.M.; Piperazinyl oxazolidinone antibacterial agents containing a pyridine, diazene, or triazene heteroaromatic ring. J Med Chem 1998, 41, 19, 3727. |
| 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) | 17013 | 1,2-difluoro-4-nitrobenzene; 3,4-Difluoronitrobenzene | 369-34-6 | C6H3F2NO2 | 详情 | 详情 |
| (II) | 10355 | Diethylenediamine; Piperazine | 110-85-0 | C4H10N2 | 详情 | 详情 |
| (III) | 18382 | 1-(2-fluoro-4-nitrophenyl)piperazine | C10H12FN3O2 | 详情 | 详情 | |
| (IV) | 18383 | 3-fluoro-4-(1-piperazinyl)phenylamine; 3-fluoro-4-(1-piperazinyl)aniline | C10H14FN3 | 详情 | 详情 | |
| (V) | 18384 | benzyl 4-(4-[[(benzyloxy)carbonyl]amino]-2-fluorophenyl)-1-piperazinecarboxylate | C26H26FN3O4 | 详情 | 详情 | |
| (VI) | 18385 | (2R)oxiranylmethyl butyrate;(R)-glycidyl butyrate | 60456-26-0 | C7H12O3 | 详情 | 详情 |
| (VII) | 18386 | benzyl 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]-1-piperazinecarboxylate | C22H24FN3O5 | 详情 | 详情 | |
| (VIII) | 18387 | benzyl 4-(4-[(5S)-5-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1-piperazinecarboxylate | C30H27FN4O6 | 详情 | 详情 | |
| (IX) | 18388 | benzyl 4-[4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl]-1-piperazinecarboxylate | C22H25FN4O4 | 详情 | 详情 | |
| (X) | 18389 | benzyl 4-(4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1-piperazinecarboxylate | C24H27FN4O5 | 详情 | 详情 | |
| (XI) | 18390 | N-([(5S)-3-[3-fluoro-4-(1-piperazinyl)phenyl]-2-oxo-1,3-oxazolidin-5-yl]methyl)acetamide | C16H21FN4O3 | 详情 | 详情 | |
| (XIII) | 18393 | N-[((5S)-3-[4-[4-(6-chloro-3-pyridazinyl)-1-piperazinyl]-3-fluorophenyl]-2-oxo-1,3-oxazolidin-5-yl)methyl]acetamide | C20H22ClFN6O3 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(VII)Condensation of 3,4-difluoronitrobenzene (I) with an excess of piperazine (II) in refluxing acetonitrile yielded the 4-nitrophenylpiperazine (III), which was reduced to aniline (IV) by hydrogenation in the presence of Pd/C. Reaction with benzyl chloroformate provided the bis(carbamate) (V). This was treated with butyllithium at -78 C, and the resulting lithium salt was reacted with (R)-glycidyl butyrate (VI) to give chiral (R)-oxazolidinone (VII). Subsequent reaction with methanesulfonyl chloride, followed by displacement of the resulting mesylate with potassium phthalimide afforded the substituted phthalimide (VIII), which was deblocked with aqueous methylamine to give primary amine (IX). Further acetylation with Ac2O in pyridine yielded amide (IX) from which the N-carbobenzoxy group was removed by hydrogenolysis in the presence of Pd/C, providing the piperazine salt (XI). Then, alkylation of piperazine (XI) with 3-chloro-6-methylpyridazine (XII) in dimethylpropyleneurea (DMPU) at 90 C yielded the title compound.
| 【1】 Brickner, S.J.; Hutchinson, D.K.; Barbachyn, M.R.; et al.; Synthesis and antibacterial activity of U-100592 and U-100766, two oxazolidinone antibacterial agents for the potential treatment of multidrug-resistant Gram-positive bacterial infections. J Med Chem 1996, 39, 3, 673. |
| 【2】 Tucker, J.A.; Allwine, D.A.; Grega, K.C.; Barbachyn, M.R.; Klock, J.L.; Adamski, J.L.; Brickner, S.J.; Hutchinson, D.K.; Ford, C.W.; Zurenko, G.E.; Conradi, R.A.; Burton, P.S.; Jensen, R.M.; Piperazinyl oxazolidinone antibacterial agents containing a pyridine, diazene, or triazene heteroaromatic ring. J Med Chem 1998, 41, 19, 3727. |
| 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) | 17013 | 1,2-difluoro-4-nitrobenzene; 3,4-Difluoronitrobenzene | 369-34-6 | C6H3F2NO2 | 详情 | 详情 |
| (II) | 10355 | Diethylenediamine; Piperazine | 110-85-0 | C4H10N2 | 详情 | 详情 |
| (III) | 18382 | 1-(2-fluoro-4-nitrophenyl)piperazine | C10H12FN3O2 | 详情 | 详情 | |
| (IV) | 18383 | 3-fluoro-4-(1-piperazinyl)phenylamine; 3-fluoro-4-(1-piperazinyl)aniline | C10H14FN3 | 详情 | 详情 | |
| (V) | 18384 | benzyl 4-(4-[[(benzyloxy)carbonyl]amino]-2-fluorophenyl)-1-piperazinecarboxylate | C26H26FN3O4 | 详情 | 详情 | |
| (VI) | 18385 | (2R)oxiranylmethyl butyrate;(R)-glycidyl butyrate | 60456-26-0 | C7H12O3 | 详情 | 详情 |
| (VII) | 18386 | benzyl 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]-1-piperazinecarboxylate | C22H24FN3O5 | 详情 | 详情 | |
| (VIII) | 18387 | benzyl 4-(4-[(5S)-5-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1-piperazinecarboxylate | C30H27FN4O6 | 详情 | 详情 | |
| (IX) | 18388 | benzyl 4-[4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl]-1-piperazinecarboxylate | C22H25FN4O4 | 详情 | 详情 | |
| (X) | 18389 | benzyl 4-(4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1-piperazinecarboxylate | C24H27FN4O5 | 详情 | 详情 | |
| (XI) | 18390 | N-([(5S)-3-[3-fluoro-4-(1-piperazinyl)phenyl]-2-oxo-1,3-oxazolidin-5-yl]methyl)acetamide | C16H21FN4O3 | 详情 | 详情 | |
| (XII) | 13485 | 2,8-Dimethyl-3-methylene-1-oxa-8-azaspiro[4.5]decane | C11H19NO | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(I)Deprotection of the benzyloxycarbonyl piperazine (I) by catalytic hydrogenolysis provided the secondary amine (II), which was then acylated by benzyloxyacetyl chloride (III) to afford amide (IV). After activation of the hydroxyl group of (IV) as the sulfonate (VI) by treatment with 3-nitrobenzenesulfonyl chloride (V), its displacement with ammonium hydroxide provided the amine (VII). The O-benzyl group of (VII) was then removed by hydrogenolysis, yielding alcohol (VIII). Finally, acylation of the primary amino group of (VIII) with ethyl dithioacetate (IX) in the presence of KOH and NaF gave rise to the title thioacetamide.
| 【1】 Hester, J.B. Jr.; Perricone, S.C.; Nidy, E.G.; Poel, T.-J. (Pharmacia Corp.); Oxazolidinone antibacterial agents having a thiocarbonyl functionality. EP 0984947; JP 2002501530; US 6218413; WO 9854161 . |
| 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) | 18386 | benzyl 4-[2-fluoro-4-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl]-1-piperazinecarboxylate | C22H24FN3O5 | 详情 | 详情 | |
| (II) | 55847 | (5R)-3-[3-fluoro-4-(1-piperazinyl)phenyl]-5-(hydroxymethyl)-1,3-oxazolidin-2-one | C14H18FN3O3 | 详情 | 详情 | |
| (III) | 10493 | 2-(Benzyloxy)acetyl chloride; Benzyloxyacetyl chloride | 19810-31-2 | C9H9ClO2 | 详情 | 详情 |
| (IV) | 55848 | (5R)-3-(4-{4-[2-(benzyloxy)acetyl]-1-piperazinyl}-3-fluorophenyl)-5-(hydroxymethyl)-1,3-oxazolidin-2-one | C23H26FN3O5 | 详情 | 详情 | |
| (V) | 41948 | 3-nitrobenzenesulfonyl chloride | 121-51-7 | C6H4ClNO4S | 详情 | 详情 |
| (VI) | 55849 | [(5R)-3-(4-{4-[2-(benzyloxy)acetyl]-1-piperazinyl}-3-fluorophenyl)-2-oxo-1,3-oxazolidin-5-yl]methyl 3-nitrobenzenesulfonate | C29H29FN4O9S | 详情 | 详情 | |
| (VII) | 55850 | (5S)-5-(aminomethyl)-3-(4-{4-[2-(benzyloxy)acetyl]-1-piperazinyl}-3-fluorophenyl)-1,3-oxazolidin-2-one | C23H27FN4O4 | 详情 | 详情 | |
| (VIII) | 17828 | (5S)-5-(aminomethyl)-3-[3-fluoro-4-(4-glycoloyl-1-piperazinyl)phenyl]-1,3-oxazolidin-2-one | C16H21FN4O4 | 详情 | 详情 | |
| (IX) | 55851 | Ethyl dithioacetate | C4H8S2 | 详情 | 详情 |