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Ethyl Acetate → 3-(S)-(2-(S)-Benzyloxycarbonylamino-4,4-dimethyl-pentanoylamino)-4-(5-fluoro-2,3-dihydro-indol-1-yl)-butyric acid tert-butyl ester

HRID 132143
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HRID 132143 반응식
[C:1]([O:5][C:6](=[O:31])[CH2:7][C@H:8]([NH:20][C:21]([O:23]CC1C=CC=CC=1)=O)[CH2:9][N:10]1[C:18]2[C:13](=[CH:14][C:15]([F:19])=[CH:16][CH:17]=2)[CH2:12][CH2:11]1)([CH3:4])([CH3:3])[CH3:2].[H][H].[C:34](C(C)(C)C)([O:36][CH2:37][C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)=[O:35].CN(C(O[N:56]1N=N[C:58]2C=CC=N[C:57]1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N([CH:78]([CH3:80])[CH3:79])CC)(C)C.[C:81](OCC)(=O)C>[OH-].[OH-].[Pd+2].CN(C=O)C.CO>[C:1]([O:5][C:6](=[O:31])[CH2:7][C@H:8]([NH:20][C:21](=[O:23])[C@@H:57]([NH:56][C:34]([O:36][CH2:37][C:38]1[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=1)=[O:35])[CH2:58][C:78]([CH3:79])([CH3:80])[CH3:81])[CH2:9][N:10]1[C:18]2[C:13](=[CH:14][C:15]([F:19])=[CH:16][CH:17]=2)[CH2:12][CH2:11]1)([CH3:3])([CH3:2])[CH3:4]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

10

반응물 6

HCID 8857Ethyl AcetateHCID 74977Benzyl pivalateHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 691957243-(s)-Benzyloxycarbonylamino-4-(5-fluoro-2,3-dihydro-indol-1-yl)-butyric acid tert-butyl esterHCID 178418361
HCID 178418361, 화합물

생성물 1

HCID 691960933-(S)-(2-(S)-Benzyloxycarbonylamino-4,4-dimethyl-pentanoylamino)-4-(5-fluoro-2,3-dihydro-indol-1-yl)-butyric acid tert-butyl ester수율 77%

시약·촉매·용매 3

HCID 9942167Palladium hydroxide촉매HCID 887Methanol용매HCID 6228Dimethylformamide용매

실험 절차

A sample of the product of step A (1.3 g, 3.0 mmol) was treated with 20% Pd(OH)2 on carbon (260 mg) and methanol (2 mL). The atmosphere in the reaction was exchanged for hydrogen by sparging the solution with a long needle for 3 minutes and the reaction was stirred under 1 atmosphere of hydrogen for 2 hours. The atmosphere was exchanged back to nitrogen by again sparging the solution with a long needle for 3 minutes. The reaction mixture was filtered through celite and the solvent was removed. The resulting oil was treated with Cbz-tBu-ala DCHA salt (1.8 g, 3.7 mmol), HATU (1.4 g, 3.8 mmol) and DMF (2 mL). The reaction was then treated with diisopropylethylamine (1.2 g, 9.2 mmol) and stirred overnight. The reaction was diluted with ethyl acetate and extracted with water twice and 1 M NaOH once. The organics were then dried over MgSO4 and the solvent was removed. The residue was purified over silica gel using a gradient of 0 to 100% ethyl acetate in hexane to afford 1.3 g (77%) of the title material as a solid; 1H NMR (CDCl3, 400 MHz) δ 0.92 (s, 9H), 1.39 (dd, 1H, J1=5.8, J2=14.4), 1.44 (s, 9H), 1.82 (dd, 1H, J1=3.7, J2=14.5), 2.51 (dd, 1H, J1=5.5, J2=16.2), 2.61 (dd, 1H, J1=4.7, J2=16.3), 2.92 (dd, 1H, J1=J2=8.2), 3.07 (dd, 1H, J1=7.4, J2=13.6), 3.17 (dd, 1H, J1=6.0, J2=13.8), 3.28-3.47 (m, 2H), 4.09-4.17 (m, 1H), 4.33-4.43 (m, 1H), 4.98-5.13 (m, 3H), 6.40 (dd, 1H, J1=4.0, J2=8.4), 6.69-6.84 (m, 3H), 7.26-7.37 (m, 5H); HPLC-MS calcd. for C31H42FN3O5 (M+H+) 556.3, found 556.5.

후처리

  1. customby sparging the solution with a long needle for 3 minutes
  2. customby again sparging the solution with a long needle for 3 minutes
  3. filtrationThe reaction mixture was filtered through celite
  4. customthe solvent was removed
  5. stirringstirred overnight
  6. extractionextracted with water twice
  7. dry with materialThe organics were then dried over MgSO4
  8. customthe solvent was removed
  9. customThe residue was purified over silica gel using a gradient of 0 to 100% ethyl acetate in hexane

출처 및 근거

ORD 기록
ord-5bf9f010983044e8810652fd873541b0
출처 데이터셋
uspto-grants-2008_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07384970B2

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