Oxalyl chloride → (S)-3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-(4-methoxy-2-oxo-2,5-dihydro-pyrrol-1-yl)-propionamide

HRID 18951

反応式

HRID 18951 の反応式
[CH:1]1([CH2:6][C@H:7]([N:11]2[CH2:15][C:14]([O:16][CH3:17])=[CH:13][C:12]2=[O:18])[C:8]([OH:10])=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.C(Cl)(=O)C(Cl)=O.[NH2:25][C:26]1[CH:30]=[CH:29][N:28]([CH2:31][C:32]([CH3:35])([OH:34])[CH3:33])[N:27]=1.C(N(CC)C(C)C)(C)C>C1C=CC=CC=1.CN(C)C=O.ClCCl>[CH:1]1([CH2:6][C@H:7]([N:11]2[CH2:15][C:14]([O:16][CH3:17])=[CH:13][C:12]2=[O:18])[C:8]([NH:25][C:26]2[CH:30]=[CH:29][N:28]([CH2:31][C:32]([OH:34])([CH3:33])[CH3:35])[N:27]=2)=[O:10])[CH2:2][CH2:3][CH2:4][CH2:5]1

参加物

8

反応物 4

HCID 65578Oxalyl chlorideHCID 81531DiisopropylethylamineHCID 593449381-(3-amino-1H-pyrazol-1-yl)-2-methylpropan-2-olHCID 66894643(S)-3-cyclopentyl-2-(4-methoxy-2-oxo-2,5-dihydro-pyrrol-1-yl)-propionic acid

生成物 1

HCID 44252903(S)-3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-(4-methoxy-2-oxo-2,5-dihydro-pyrrol-1-yl)-propionamide収率 55%

試薬・触媒・溶媒 3

HCID 6228Dimethylformamide触媒HCID 241Benzene溶媒HCID 6344Dichloromethane溶媒

反応条件

温度
25 °C

実験手順

A solution of (S)-3-cyclopentyl-2-(4-methoxy-2-oxo-2,5-dihydro-pyrrol-1-yl)-propionic acid (643 mg, 2.53 mmol) in benzene (8 mL) was treated with oxalyl chloride (342 mg, 2.7 mmol), and N,N-dimethylformamide (1 drop). Effervescence was observed. The reaction mixture was stirred for 3 h at 25° C., under nitrogen. The reaction mixture was concentrated, and dissolved in dichloromethane (8 mL) and treated with 1-(3-amino-pyrazol-1-yl)-2-methyl-propan-2-ol (prepared in U.S. Pat. Appl. US2008021032 Example 80, 442 mg, 2.8 mmol), and N,N-diisopropylethylamine (497 mg, 3.8 mmol). The reaction mixture was stirred at 25° C., under nitrogen for 18 h. The reaction mixture was diluted with dichloromethane, washed with 2N aqueous hydrochloric acid, saturated sodium chloride solution and dried. The organic layer was concentrated, and the crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 80 g; 0% to 10% methanol/dichloromethane) to afford (S)-3-cyclopentyl-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-2-(4-methoxy-2-oxo-2,5-dihydro-pyrrol-1-yl)-propionamide (542 mg, 55%) as an off-white powder: LR-ES-MS m/z calculated for C20H30N4O4 [M]+ 390, observed [M+H]+ 391; 1H NMR (DMSO-d6, 300 MHz) δ ppm 1.04 (s, 3 H), 1.06 (s, 3H), 1.08 (m, 1H), 1.26 (m, 1H), 1.44 (m, 2H), 1.50-1.86 (m, 7H), 3.78 (s, 3H), 3.88 (s, 2H), 3.95 (d, Jgem=18.0 Hz, 1H), 4.33 (d, Jgem=18.0 Hz, 1H), 4.66 (s, 1H), 4.78 (dd, J=4.6 Hz, 10.6 Hz, 1H), 5.15 (s 1H), 6.42 (d, J=2.3 Hz, 1H), 7.52 (d, J=2.3 Hz, 1H), 10.70 (s, 1H).

後処理

  1. concentrationThe reaction mixture was concentrated
  2. dissolutiondissolved in dichloromethane (8 mL)
  3. stirringThe reaction mixture was stirred at 25° C., under nitrogen for 18 h
  4. washwashed with 2N aqueous hydrochloric acid, saturated sodium chloride solution
  5. customdried
  6. concentrationThe organic layer was concentrated
  7. customthe crude product was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 80 g; 0% to 10% methanol/dichloromethane)

出典と根拠

ORDレコード
ord-f02de99b23cb4cfda60091d13d54044f
出典データセット
uspto-grants-2010_06
特許番号
US07741327B2

関連ノート

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