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【结 构 式】

【分子编号】67757

【品名】(R)-3-(4-(benzyloxy)-3-fluorophenyl)-5-(hydroxymethyl)oxazolidin-2-one

【CA登记号】 

【 分 子 式 】C17H16FNO4

【 分 子 量 】317.31678

【元素组成】C 64.35% H 5.08% F 5.99% N 4.41% O 20.17%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(VII)

Substitution of 1,2-difluoro-4-nitrobenzene (I) with benzyl alcohol in the presence of KOH in CH2Cl2 gives 1-benzyloxy-2-fluoro-4-nitrobenzene (II), which is reduced to 4-benzyloxy-3-fluoroaniline (III) by means of H2 and Pt/C in EtOAc. Condensation of aniline (III) with benzyl chloroformate (IV) in the presence of NaHCO3 in acetone/H2O affords carbamate (V), which is cyclized with (R)-glycidyl butyrate (VI) using BuLi in THF at –60 °C to provide the oxazolidinone derivative (VII) . Debenzylation of compound (VII) with H2 over Pd/C in THF/MeOH produces alcohol (VIII), which is condensed with epoxide (IX) in the presence of Na2CO3 in DMF at 100 °C to obtain the corresponding ether (X). N-Deprotection of intermediate (X) by means of H2 over Pd/C in EtOAc/MeOH gives the piperidine derivative (XI), which is finally condensed with the quinolone boron chelate (XII) —prepared by reaction of the quinolone ester (XIII) with B(OH)3 and AcOH in the presence of ZnCl2 at 110 °C — using DIEA in NMP at 85 °C .

1 Hermecz, I., Kereszturi, g., Vasvari, L. et al. (Chinoin Zrt). Quinoline carboxylic acid boric acid anhydrides and process for the preparation thereof. CN 88101941, EP 0310647, JP 1989003300, US 4940794, WO 1988007998.
2 Hubschwerlen, C., Panchaud, P., Specklin, J.-L. (Actelion Pharmaceuticals, Ltd.). 5-Hydroxymethyl-oxazolidin-2-one derivatives. CN 102014903, EP 2086968, JP 2010509314, JP 2010132677, KR 2010137569, US 2009247578, US 8124623, WO 2008056335.
3 Hubschwerlen, C., Locher, H. (Actelion Pharmaceuticals, Ltd.). 5-Hydroxymethyl-oxazolidin-2-one derivatives for treating bacterial intestinal diseases. EP 2296651, JP 2011519914, WO 2009136379.
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) 67754 1-benzyloxy-2-fluoro-4-nitrobenzene;1-(benzyloxy)-2-fluoro-4-nitrobenzene   C13H10FNO3 详情 详情
(III) 67755 4-benzyloxy-3-fluoroaniline   C13H12FNO 详情 详情
(IV) 10101 Benzyloxycarbonyl chloride; Benzyl chloroformate; 1-[[(Chlorocarbonyl)oxy]methyl]benzene 501-53-1 C8H7ClO2 详情 详情
(V) 67756 benzyl (4-(benzyloxy)-3-fluorophenyl)carbamate   C21H18FNO3 详情 详情
(VI) 18385 (2R)oxiranylmethyl butyrate;(R)-glycidyl butyrate 60456-26-0 C7H12O3 详情 详情
(VII) 67757 (R)-3-(4-(benzyloxy)-3-fluorophenyl)-5-(hydroxymethyl)oxazolidin-2-one   C17H16FNO4 详情 详情
(VIII) 67758 (R)-3-(3-fluoro-4-hydroxyphenyl)-5-(hydroxymethyl)oxazolidin-2-one   C10H10FNO4 详情 详情
(IX) 67759 benzyl 1-oxa-6-azaspiro[2.5]octane-6-carboxylate   C14H17NO3 详情 详情
(X) 67760 (R)-benzyl 4-((2-fluoro-4-(5-(hydroxymethyl)-2-oxooxazolidin-3-yl)phenoxy)methyl)-4-hydroxypiperidine-1-carboxylate    C24H27FN2O7 详情 详情
(XI) 67761 (R)-3-(3-fluoro-4-((4-hydroxypiperidin-4-yl)methoxy)phenyl)-5-(hydroxymethyl)oxazolidin-2-one   C16H21FN2O5 详情 详情
(XII) 67762     C17H14BClFNO7 详情 详情
(XIII) 30340 ethyl 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-3-quinolinecarboxylate 86483-54-7 C15H13ClFNO3 详情 详情
Extended Information