Dl-Tryptophan → N-(3-acetoxy-4-methoxycarbonylbenzyl)-3-(3-indolyl)propanamide

HRID 743153노트

반응식

HRID 743153 반응식
F[C:2](F)(F)[C:3]([O:5][CH2:6][CH3:7])=[O:4].N[CH:11]([C:22]([OH:24])=O)[CH2:12][C:13]1[C:21]2[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=2)[NH:15][CH:14]=1.C([N:27]([CH2:30][CH3:31])CC)C.CN([CH:35]=[O:36])C>>[C:3]([O:5][C:6]1[CH:7]=[C:31]([CH:13]=[CH:12][C:11]=1[C:22]([O:36][CH3:35])=[O:24])[CH2:30][NH:27][C:22](=[O:24])[CH2:11][CH2:12][C:13]1[C:21]2[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=2)[NH:15][CH:14]=1)(=[O:4])[CH3:2]

참가 물질

5

반응물 4

HCID 1148Dl-TryptophanHCID 6228DimethylformamideHCID 8471TriethylamineHCID 9794Ethyl trifluoroacetate

생성물 1

HCID 10475717N-(3-acetoxy-4-methoxycarbonylbenzyl)-3-(3-indolyl)propanamide수율 50%

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온도
20 °C

실험 절차

Ethyl trifluoroacetate (1.7 mL) was added to a stirred solution of DL-tryptophan (2.3 g) and triethylamine (1.6 mL) in DMF (5 mL), then the flask was sealed and purged with nitrogen, and the mixture stirred at 20° C. for 1 day (method of Curphey TJ, J. Org. Chem. 1979;44:2805). Excess reagents were removed under vacuum, then triethylamine (1.9 mL) and DMF (10 mL) were added, and the mixture cooled to 0° C. DEPC (98%, 2.0 mL) was added, followed by benzylamine (1.72 mL), then the mixture was stirred under nitrogen at 20° C. for 1 day. The resulting solution was diluted with water (100 mL) and extracted with EtOAc (3×100 mL). Evaporation gave an oil which was purified by chromatography on silica gel, eluting with EtOAc:light petroleum (1:1), to give DL-N-benzyl-α-trifluoroacetylamino-3-(3-indolyl)propanamide [II: R1 =R3 =H, R2 =CH2CH(NHCOCF3)CONHCH2Ph] (2.21 g, 50%); mp (EtOAc/light petroleum) 181°-183° C.

후처리

  1. customthe flask was sealed
  2. custompurged with nitrogen
  3. customExcess reagents were removed under vacuum
  4. additiontriethylamine (1.9 mL) and DMF (10 mL) were added
  5. temperaturethe mixture cooled to 0° C
  6. additionDEPC (98%, 2.0 mL) was added
  7. stirringthe mixture was stirred under nitrogen at 20° C. for 1 day
  8. additionThe resulting solution was diluted with water (100 mL)
  9. extractionextracted with EtOAc (3×100 mL)
  10. customEvaporation
  11. customgave an oil which
  12. customwas purified by chromatography on silica gel
  13. washeluting with EtOAc:light petroleum (1:1)

출처 및 근거

ORD 기록
ord-faa3acb8a790402299b5f710bdf6c0c6
출처 데이터셋
uspto-grants-1996_09
특허 번호
US05556874

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