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Ethylenediamine → 2-(6-fluoro-imidazo[1,5-a]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-1-oxazol-2-yl-ethyl)-amide

HRID 245922
ノート
印刷プレビュー

反応式

HRID 245922 の反応式
[O:1]1[CH:5]=[CH:4][N:3]=[C:2]1[C@H:6]([NH:8][C:9]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[C:17]([C:20]3[N:21]=[CH:22][N:23]4[CH:28]=[C:27]([F:29])[CH:26]=[CH:25][C:24]=34)[N:18]=2)[N:13](COCC[Si](C)(C)C)[CH:12]=1)=[O:10])[CH3:7].FC(F)(F)C(O)=O.C(N)CN>ClCCl>[O:1]1[CH:5]=[CH:4][N:3]=[C:2]1[C@H:6]([NH:8][C:9]([C:11]1[C:19]2[C:14](=[N:15][CH:16]=[C:17]([C:20]3[N:21]=[CH:22][N:23]4[CH:28]=[C:27]([F:29])[CH:26]=[CH:25][C:24]=34)[N:18]=2)[NH:13][CH:12]=1)=[O:10])[CH3:7]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 3301EthylenediamineHCID 6422Trifluoroacetic acidHCID 712881952-(6-fluoro-imidazo[1,5-a]pyridin-1-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-1-oxazol-2-yl-ethyl)-amide

生成物 1

HCID 712881782-(6-fluoro-imidazo[1,5-a]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-1-oxazol-2-yl-ethyl)-amide収率 94.7%

試薬・触媒・溶媒 1

HCID 6344
Dichloromethane
溶媒

実験手順

In a round-bottomed flask, 2-(6-fluoro-imidazo[1,5-a]pyridin-1-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-1-oxazol-2-yl-ethyl)-amide (107 mg, 0.205 mmol) was dissolved in dichloromethane (1.1 ml) and trifluoroacetic acid (0.64 ml, 8.3 mmol) was added. The reaction mixture was stirred at room temperature for 2 h then concentrated. The residue was dissolved in dichloromethane (1.1 ml) and ethylenediamine (0.84 ml, 12.4 mmol) was added. The yellow reaction mixture was stirred at room temperature for 1 h then quenched with water and diluted with ethyl acetate. The resultant suspension was filtered, washed with hot water and ethyl acetate and dried under high vacuum to provide 76 mg (90%) of 2-(6-fluoro-imidazo[1,5-a]pyridin-1-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((R)-1-oxazol-2-yl-ethyl)-amide as a yellow powder. MS: (M+Na)+=414; 1H NMR (DMSO-d6, 300 MHz): δ (ppm) 12.76 (br. s., 1H), 9.12 (s, 1H), 8.70 (dd, J=4.7, 2.1 Hz, 1H), 8.60 (d, J=8.7 Hz, 1H), 8.54 (s, 1H), 8.36-8.46 (m, 2H), 8.11 (s, 1H), 7.25 (s, 1H), 7.04 (ddd, J=9.9, 7.8, 1.9 Hz, 1H), 5.45-5.60 (m, 1H), 1.65 (d, J=6.8 Hz, 3H).

後処理

  1. concentrationthen concentrated
  2. dissolutionThe residue was dissolved in dichloromethane (1.1 ml)
  3. stirringThe yellow reaction mixture was stirred at room temperature for 1 h
  4. customthen quenched with water
  5. additiondiluted with ethyl acetate
  6. filtrationThe resultant suspension was filtered
  7. washwashed with hot water and ethyl acetate
  8. customdried under high vacuum

出典と根拠

ORDレコード
ord-f6abe8072bee4553834125dd1210ce72
出典データセット
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08658646B2

反応ノート

読み込み中…

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