Piperidine → HCID 54258041, Verbindung

HRID 393475

Reaktionsgleichung

Reaktionsgleichung von HRID 393475
[CH3:1][O:2][C:3](=[O:21])[C@H:4]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([NH2:20])=[CH:16][CH:15]=1)[NH:5][C:6]([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7].C([NH:39][C@@H:40]([C:48](O)=[O:49])[CH2:41][C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1)(OCC1C2C(=CC=CC=2)C2C1=CC=CC=2)=O.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.N1CCCCC1>CN(C=O)C.O>[CH3:1][O:2][C:3](=[O:21])[C@H:4]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([NH:20][C:48](=[O:49])[C@H:40]([NH2:39])[CH2:41][C:42]2[CH:43]=[CH:44][CH:45]=[CH:46][CH:47]=2)=[CH:16][CH:15]=1)[NH:5][C:6]([O:8][C:9]([CH3:12])([CH3:10])[CH3:11])=[O:7]

Komponenten

8

Edukt 5

HCID 8082PiperidineHCID 81531DiisopropylethylamineHCID 978332(2R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylpropanoic acidHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 110118554-Amino-N-((1,1-dimethylethoxy)carbonyl)-L-phenylalanine methyl ester

Produkt 1

HCID 54258041HCID 54258041, VerbindungAusbeute 81,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel2×

Versuchsvorschrift

To the solution of 4-amino-N-[(1,1-dimethylethoxy)carbonyl]-L-phenylalanine methyl ester (5.09 g, 17 mmol) in DMF (60 mL) was added Fmoc-D-Phenylalanine (8.70 g, 22.5 mmol), DIPEA (12 mL, 69 mmol) and HBTU (8.50 g, 22.5 mmol). The mixture was then stirred at room temperature for 4 h. The reaction mixture was diluted with water (150 mL) and the light yellow solid which precipitated was collected by filtration. This solid was then redissolved in 60 mL of acetone and the solution was treated with 100 mL of water. The solid was collected by filtration and was washed with 1N HCl, H2O. After drying at 60° C. under vaccum overnight, a light yellow solid was obtained (13.2 g). A portion of this solid (2.51 g, 3.78 mmol) was dissolved in 15 mL of DMF and to the solution was added 1.5 mL of piperidine. The above solution was stirred at room temperature for 45 min. After removal of the solvent, the residue was recrystillized from ethyl acetate-hexane to give N-[(1,1-dimethylethoxy)carbonyl]-4-[[(2R)-2-amino-1-oxo-3-phenylpropyl]amino]-L-phenylalanine methyl ester (1.36 g, 3.0 mmol) in 81.5% yield. LR MS 442 (M+H).

Aufarbeitung

  1. customthe light yellow solid which precipitated
  2. filtrationwas collected by filtration
  3. dissolutionThis solid was then redissolved in 60 mL of acetone
  4. additionthe solution was treated with 100 mL of water
  5. filtrationThe solid was collected by filtration
  6. washwas washed with 1N HCl, H2O
  7. customAfter drying at 60° C. under vaccum overnight
  8. customa light yellow solid was obtained (13.2 g)
  9. stirringThe above solution was stirred at room temperature for 45 min
  10. customAfter removal of the solvent

Quellen und Nachweise

ORD-Eintrag
ord-cf1a60129f4c490ab85058eb4737f2bd
Quelldatensatz
uspto-grants-2004_10
Patentnummer
US06806365B2

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