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Water → tert-butyl (1S,3R)-3-(2-(5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)hydrazinecarbonyl)cyclopentylcarbamate

HRID 1854437
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HRID 1854437 반응식
[NH:1]([C:3]1[N:4]=[C:5]2[CH:11]=[CH:10][N:9]([S:12]([C:15]3[CH:21]=[CH:20][C:18]([CH3:19])=[CH:17][CH:16]=3)(=[O:14])=[O:13])[C:6]2=[N:7][CH:8]=1)[NH2:2].[C:22]([O:26][C:27]([NH:29][C@H:30]1[CH2:34][CH2:33][C@@H:32]([C:35](O)=[O:36])[CH2:31]1)=[O:28])([CH3:25])([CH3:24])[CH3:23].CCN=C=NCCCN(C)C.Cl.O>C(Cl)Cl>[S:12]([N:9]1[C:6]2=[N:7][CH:8]=[C:3]([NH:1][NH:2][C:35]([C@@H:32]3[CH2:33][CH2:34][C@H:30]([NH:29][C:27](=[O:28])[O:26][C:22]([CH3:24])([CH3:23])[CH3:25])[CH2:31]3)=[O:36])[N:4]=[C:5]2[CH:11]=[CH:10]1)([C:15]1[CH:21]=[CH:20][C:18]([CH3:19])=[CH:17][CH:16]=1)(=[O:13])=[O:14]
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참가 물질

6

반응물 4

HCID 962WaterHCID 1512526(1R,3S)-3-(((tert-butoxy)carbonyl)amino)cyclopentane-1-carboxylic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 580098102-Hydrazinyl-5-tosyl-5H-pyrrolo[2,3-b]pyrazine

생성물 1

HCID 58009789tert-butyl (1S,3R)-3-(2-(5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)hydrazinecarbonyl)cyclopentylcarbamate
수율 99.1%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To mixture of 2-hydrazinyl-5-tosyl-5H-pyrrolo[2,3-b]pyrazine (2.50 g, 8.24 mmol) and (1R,3S)-3-(tert-butoxycarbonylamino)cyclopentanecarboxylic acid (2.08 g, 9.07 mmol, Peptech) in DCM (30 mL) was added EDC.HCl (1.90 g, 9.89 mmol). After stirring for about 4.5 h at ambient temperature, water (30 mL) was added and the layers were separated. The aqueous layer was then extracted with EtOAc (15 mL). The combined organic layers were washed with brine, dried over anhydrous MgSO4, filtered, and concentrated under reduced pressure. The crude material was dissolved in DCM (15 mL) and purified by silica gel chromatography eluting with a gradient of 40-100% EtOAc in heptane to give tert-butyl (1S,3R)-3-(2-(5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)hydrazinecarbonyl)cyclopentylcarbamate (4.20 g, 97%): LC/MS (Table 2, Method a) Rt=2.27 min; MS m/z: 515 (M+H)+.

후처리

  1. customthe layers were separated
  2. extractionThe aqueous layer was then extracted with EtOAc (15 mL)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. dissolutionThe crude material was dissolved in DCM (15 mL)
  8. custompurified by silica gel chromatography
  9. washeluting with a gradient of 40-100% EtOAc in heptane

출처 및 근거

ORD 기록
ord-4a5698f36518425aa64d873a7f18367d
출처 데이터셋
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08962629B2

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