cis-tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamothioyl)piperidine-1-carboxylate → cis-tert-butyl-4-methyl-3-(6-tosyl-6H-imidazo[1, 5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate

HRID 1969606

反応式

HRID 1969606 の反応式
[CH3:1][C@H:2]1[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:4][C@H:3]1[C:15](=S)[NH:16][CH2:17][C:18]1[N:19]=[C:20]2[CH:26]=[CH:25][N:24]([S:27]([C:30]3[CH:36]=[CH:35][C:33]([CH3:34])=[CH:32][CH:31]=3)(=[O:29])=[O:28])[C:21]2=[N:22][CH:23]=1>O1CCOCC1.FC(F)(F)C([O-])=O.[Hg+2].FC(F)(F)C([O-])=O>[C:11]([O:10][C:8]([N:5]1[CH2:6][CH2:7][C@H:2]([CH3:1])[C@H:3]([C:15]2[N:19]3[C:20]4[CH:26]=[CH:25][N:24]([S:27]([C:30]5[CH:36]=[CH:35][C:33]([CH3:34])=[CH:32][CH:31]=5)(=[O:28])=[O:29])[C:21]=4[N:22]=[CH:23][C:18]3=[CH:17][N:16]=2)[CH2:4]1)=[O:9])([CH3:14])([CH3:13])[CH3:12]

参加物

4

反応物 1

HCID 131730519cis-tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamothioyl)piperidine-1-carboxylate

生成物 1

HCID 58557992cis-tert-butyl-4-methyl-3-(6-tosyl-6H-imidazo[1, 5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate収率 90%

試薬・触媒・溶媒 2

HCID 2723924Mercury bis(trifluoroacetate)触媒HCID 312751,4-Dioxane溶媒

実験手順

A round bottom flask was charged with cis-tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamoyl)piperidine-1-carboxylate (5.62 g, 10.6 mmol, prepared using O from 4-methylnicotonic acid, M, H from Example #5, Step C, HATU and DIEA) and Lawesson's reagent (3.0 g, 7.4 mmol) in 1,4-dioxane (100 mL). The reaction was heated at about 80° C. for about 1 h, cooled to ambient temperature, and concd under reduced pressure. The crude product was dissolved in EtOAc (200 mL) and washed with saturated aqueous NaHCO3 (3×100 mL). The organic layer was separated, dried over anhydrous MgSO4, filtered, and concd under reduced pressure. The material was purified by silica gel chromatography eluting with a gradient of 0-5% MeOH in DCM to afford cis-tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamothioyl)piperidine-1-carboxylate (5.2 g, 90%): LC/MS (Table 1, Method b) Rt=2.65 min; MS m/z: 544 (M+H)+. A round bottom flask was charged with cis-tert-butyl 4-methyl-3-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methylcarbamothioyl)piperidine-1-carboxylate (2.6 g, 4.8 mmol) and mercury (II) trifluoroacetate (2.1 g, 4.8 mmol) in 1,4-dioxane (72 mL) and stirred at ambient temperature for about 1 h. The reaction mixture was filtered through a pad of Celite®. The Celite® pad was rinsed with DCM (30 mL) and EtOAc (30 mL). The filtrate was concd under reduced pressure. The residue was dissolved in DCM (50 mL) and washed with saturated aqueous sodium thiosulfate (10 mL), and saturated aqueous NaHCO3 (25 mL), dried over anhydrous MgSO4, filtered, and concd under reduced pressure. The material was purified by silica gel chromatography eluting with a gradient of 0-5% MeOH in DCM to afford cis-tert-butyl-4-methyl-3-(6-tosyl-6H-imidazo[1,5-a]pyrrolo[2,3-e]pyrazin-1-yl)piperidine-1-carboxylate (2.2 g, 90%): LC/MS (Table 1, Method b) Rt=2.57 min; MS m/z: 510 (M+H)+.

後処理

  1. filtrationThe reaction mixture was filtered through a pad of Celite®
  2. washThe Celite® pad was rinsed with DCM (30 mL) and EtOAc (30 mL)
  3. dissolutionThe residue was dissolved in DCM (50 mL)
  4. washwashed with saturated aqueous sodium thiosulfate (10 mL), and saturated aqueous NaHCO3 (25 mL)
  5. dry with materialdried over anhydrous MgSO4
  6. filtrationfiltered
  7. customThe material was purified by silica gel chromatography
  8. washeluting with a gradient of 0-5% MeOH in DCM

出典と根拠

ORDレコード
ord-e71e49bf9e41442fbe78e547f58931d7
出典データセット
uspto-grants-2013_04
特許番号
US08426411B2

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