Diisopropylethylamine → {(3E)-4-[(1R)-1-(N-{2-[2-(2-hydroxyethoxy)phenyl]ethyl}-N-methylcarbamoyl)-2-(2-naphthyl)ethylcarbamoyl]-1,1-dimethylbut-3-enyl}carbamic acid tert-butyl ester

HRID 366146Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 366146
[C:1]([O:5][C:6]([NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13]([OH:15])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].ON1C2N=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[NH2:40][C@H:41]([CH2:58][C:59]1[CH:68]=[CH:67][C:66]2[C:61](=[CH:62][CH:63]=[CH:64][CH:65]=2)[CH:60]=1)[C:42]([N:44]([CH2:46][CH2:47][C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][C:49]=1[O:54][CH2:55][CH2:56][OH:57])[CH3:45])=[O:43].C(N(C(C)C)C(C)C)C>ClCCl.CN(C)C=O.C(OCC)(=O)C>[C:1]([O:5][C:6](=[O:7])[NH:8][C:9]([CH3:17])([CH3:16])[CH2:10]/[CH:11]=[CH:12]/[C:13](=[O:15])[NH:40][C@@H:41]([C:42](=[O:43])[N:44]([CH2:46][CH2:47][C:48]1[CH:53]=[CH:52][CH:51]=[CH:50][C:49]=1[O:54][CH2:55][CH2:56][OH:57])[CH3:45])[CH2:58][C:59]1[CH:68]=[CH:67][C:66]2[C:61](=[CH:62][CH:63]=[CH:64][CH:65]=2)[CH:60]=1)([CH3:2])([CH3:3])[CH3:4]

Komponenten

9

Edukt 5

HCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10847814(2E)-5-(tert-Butyloxycarbonylamino)-5-methylhex-2-enoic acidHCID 21310217(2R)-2-amino-N-{2-[2-(2-hydroxyethoxy)phenyl]ethyl}-N-methyl-3-(2-naphthyl)propionamide

Produkt 1

HCID 59965088{(3E)-4-[(1R)-1-(N-{2-[2-(2-hydroxyethoxy)phenyl]ethyl}-N-methylcarbamoyl)-2-(2-naphthyl)ethylcarbamoyl]-1,1-dimethylbut-3-enyl}carbamic acid tert-butyl esterAusbeute 61 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 6228DimethylformamideLösungsmittelHCID 6344DichloromethaneLösungsmittel2×HCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

(2E)-5-(tert-Butoxycarbonylamino)-5-methylhex-2-enoic acid (95 mg, 0.39 mmol) was dissolved in dichloromethane (1 ml) and N,N-dimethylformamide (1 ml). 1-Hydroxy-7-azabenzotriazole (55 mg, 0.39 mmol) was added. The solution was cooled to 0° C. N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (75 mg, 0.39 mmol) was added. The reaction mixture was stirred for 20 min at 0° C. A solution of (2R)-2-amino-N-{2-[2-(2-hydroxyethoxy)phenyl]ethyl}-N-methyl-3-(2-naphthyl)propionamide (155 mg, 0.39 mmol) in dichloromethane (1 ml) and ethyldiisopropylamine (0.07 ml, 0.39 mmol) were added successively. The reaction mixture was stirred for 16 h, while it was warming up to room temperature. It was diluted with ethyl acetate (30 ml) and washed with 10% aqueous sodium hydrogen sulfate solution (30 ml). The aqueous phase was extracted with ethyl acetate (2×20 ml). The combined organic layers were washed with a saturated aqueous solution of sodium hydrogen carbonate solution (30 ml) and dried over magnesium sulfate. The solvent was removed in vacuo. The crued product was purified by flash chromatography on silica (12 g), using ethyl acetate/heptane (2:1) as eluent to give 147 mg of {(3E)-4-[(1R)-1-(N-{2-[2-(2-hydroxyethoxy)phenyl]ethyl}-N-methylcarbamoyl)-2-(2-naphthyl)ethylcarbamoyl]-1,1-dimethylbut-3-enyl}carbamic acid tert-butyl ester.

Aufarbeitung

  1. stirringThe reaction mixture was stirred for 16 h, while it
  2. temperaturewas warming up to room temperature
  3. washwashed with 10% aqueous sodium hydrogen sulfate solution (30 ml)
  4. extractionThe aqueous phase was extracted with ethyl acetate (2×20 ml)
  5. washThe combined organic layers were washed with a saturated aqueous solution of sodium hydrogen carbonate solution (30 ml)
  6. dry with materialdried over magnesium sulfate
  7. customThe solvent was removed in vacuo
  8. customThe crued product was purified by flash chromatography on silica (12 g)

Quellen und Nachweise

ORD-Eintrag
ord-b4ebf4f7b5f448f595e2b9bc6933777f
Quelldatensatz
uspto-grants-2000_10
Patentnummer
US06127354

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