Ethyl Acetate → HCID 86650246, Verbindung

HRID 58385

Reaktionsgleichung

Reaktionsgleichung von HRID 58385
C[O:2][C:3]([C@H:5]1[NH:21][C:20](=[O:22])[C@H:19]([CH:23]([CH3:25])[CH3:24])[NH:18][C:17](=[O:26])[C@@H:16]([NH:27][S:28]([CH3:31])(=[O:30])=[O:29])[CH2:15][C:14]2=[CH:32][CH:33]=[C:11]([CH:12]=[CH:13]2)[O:10][CH2:9][CH2:8][CH2:7][CH2:6]1)=O.CC(C[AlH]CC(C)C)C.CCOC(C)=O>C(Cl)Cl>[CH:3]([C@H:5]1[NH:21][C:20](=[O:22])[C@H:19]([CH:23]([CH3:25])[CH3:24])[NH:18][C:17](=[O:26])[C@@H:16]([NH:27][S:28]([CH3:31])(=[O:30])=[O:29])[CH2:15][C:14]2=[CH:32][CH:33]=[C:11]([CH:12]=[CH:13]2)[O:10][CH2:9][CH2:8][CH2:7][CH2:6]1)=[O:2]

Komponenten

5

Edukt 3

HCID 8857Ethyl AcetateHCID 14487Diisobutylaluminum hydrideHCID 66847432(7S,10S,13S)-10-Isopropyl-13-methanesulfonylamino-9,12-dioxo-2-oxa-8,11-diaza-bicyclo[13.2.2]nonadeca-1(18),15(19),16-triene-7-carboxylic acid methyl ester

Produkt 1

HCID 86650246HCID 86650246, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

Ester 55 (40 mg) was dissolved in DCM (6 mL) under an atmosphere of argon. The reaction was cooled to −78° C. To the resultant solution DIBAL (0.46 mL) was added dropwise. This was stirred for 2 h before being allowed to warm to rt overnight. The reaction mixture was partitioned between EtOAc and 1M hydrochloric acid. The aqueous phase was extracted again with EtOAc and the combined organic extracts were dried (MgSO4), filtered and concentrated in vacuo. Purification was achieved using flash chromatography, eluting with a gradient of 1/1 EtOAc/(50/70) petroleum ether to EtOAc to yield a light brown solid, 7 mg, 19%. Rf=0.25 (1/1 EtOAc/(50/70) petroleum ether).

Aufarbeitung

  1. temperatureto warm to rt overnight
  2. customThe reaction mixture was partitioned between EtOAc and 1M hydrochloric acid
  3. extractionThe aqueous phase was extracted again with EtOAc
  4. dry with materialthe combined organic extracts were dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurification
  8. washeluting with a gradient of 1/1 EtOAc/(50/70) petroleum ether to EtOAc
  9. customto yield a light brown solid, 7 mg, 19%

Quellen und Nachweise

ORD-Eintrag
ord-a6a5fe420e264461a6129f8bc95ee3e8
Quelldatensatz
uspto-grants-2016_09
Patentnummer
US09434762B2

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