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【结 构 式】

【分子编号】55948

【品名】2-methyl-5-nitro-1H-indole; 2-Methyl-5-nitroindole

【CA登记号】7570-47-0

【 分 子 式 】C9H8N2O2

【 分 子 量 】176.1748

【元素组成】C 61.36% H 4.58% N 15.9% O 18.16%

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:(II)

2-Methylindole (I) was nitrated employing NaNO3 in H2SO4 and the resultant 5-nitroindole (II) was further reduced to the corresponding indoline (III) by means of NaBH3CN in the presence of HOAc. Catalytic hydrogenation of the nitro group of (III) over Pd/C furnished diamine (IV), which was converted to the bis-carbamate (V) by treatment with benzyl chloroformate. Oxazolidinone (VII) was then obtained by condensation of carbamate (V) with (R)-glycidyl butyrate (VI) in the presence of BuLi at -78 C. After conversion of alcohol (VII) to the corresponding nosylate (VIII), displacement of its sulfonate group with ammonium hydroxide gave rise to the primary amine (IX). Acetylation of amine (IX), followed by hydrogenolysis of the remaining N-benzyloxycarbonyl group, yielded acetamide (X). The indoline N of (X) was then acylated by acetoxyacetyl chloride (XI) to produce amide (XII). The title compound was then obtained by smooth hydrolysis of the acetoxy group of (XII) with K2CO3, followed by separation of the resultant mixture of diastereoisomers by chiral HPLC.

1 Genin, M.J.; Barbachyn, M.R.; Grega, K.C.; et al.; The potentiating effect of remote chirality on the antibacterial activity of a series of 2-substituted indolinyl phenyloxazolidinones. 41st Intersci Conf Antimicrob Agents Chemother (Dec 16 2001, Chicago) 2001, Abst F-1042.
2 Hester, J.B. Jr.; Barbachyn, M.R.; Johnson, P.D.; Genin, M.J. (Pharmacia Corp.); Bicyclic oxazolidinones as antibacterial agent. EP 1181288; US 6387896; WO 0073301 .
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) 28747 2-methyl-1H-indole 95-20-5 C9H9N 详情 详情
(II) 55948 2-methyl-5-nitro-1H-indole; 2-Methyl-5-nitroindole 7570-47-0 C9H8N2O2 详情 详情
(III) 55949 2-methyl-5-nitroindoline C9H10N2O2 详情 详情
(IV) 55950 2-methyl-2,3-dihydro-1H-indol-5-ylamine; 2-methyl-5-indolinamine C9H12N2 详情 详情
(V) 55951 benzyl 5-{[(benzyloxy)carbonyl]amino}-2-methyl-1-indolinecarboxylate C25H24N2O4 详情 详情
(VI) 18385 (2R)oxiranylmethyl butyrate;(R)-glycidyl butyrate 60456-26-0 C7H12O3 详情 详情
(VII) 55952 benzyl 5-[(5R)-5-(hydroxymethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-methyl-1-indolinecarboxylate C21H22N2O5 详情 详情
(VIII) 55953 benzyl 2-methyl-5-[(5R)-5-({[(3-nitrophenyl)sulfonyl]oxy}methyl)-2-oxo-1,3-oxazolidin-3-yl]-1-indolinecarboxylate C27H25N3O9S 详情 详情
(IX) 55954 benzyl 5-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-2-methyl-1-indolinecarboxylate C21H23N3O4 详情 详情
(X) 55955 N-{[(5S)-3-(2-methyl-2,3-dihydro-1H-indol-5-yl)-2-oxo-1,3-oxazolidin-5-yl]methyl}acetamide C15H19N3O3 详情 详情
(XI) 10456 Acetoxiacetil chloride; 2-chloro-2-oxoethyl acetate 13831-31-7 C4H5ClO3 详情 详情
(XII) 55956 2-(5-{(5S)-5-[(acetylamino)methyl]-2-oxo-1,3-oxazolidin-3-yl}-2-methyl-2,3-dihydro-1H-indol-1-yl)-2-oxoethyl acetate C19H23N3O6 详情 详情
Extended Information