Sodium Iodide → HCID 86701266, Verbindung

HRID 2276067Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2276067
[C:1]([O:6][C@@H:7]1[C@@H:15]([CH2:16][CH2:17][O:18]S(C)(=O)=O)[C:14](=[O:23])[O:13][CH2:12][C@H:11]([NH:24][C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[C:10](=[O:32])[O:9][C@H:8]1[CH3:33])(=[O:5])[CH:2]([CH3:4])[CH3:3].[Na+].[I-].[C:36]([O-])(O)=[O:37].[Na+].CCOC(C)=O>CN(C=O)C>[C:1]([O:6][C@@H:7]1[C@@H:15]([CH2:16][CH2:17][O:18][CH:36]=[O:37])[C:14](=[O:23])[O:13][CH2:12][C@H:11]([NH:24][C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[C:10](=[O:32])[O:9][C@H:8]1[CH3:33])(=[O:5])[CH:2]([CH3:4])[CH3:3]

Komponenten

6

Edukt 4

HCID 5238Sodium IodideHCID 8857Ethyl AcetateHCID 516892Sodium BicarbonateHCID 86701267HCID 86701267, Verbindung

Produkt 1

HCID 86701266HCID 86701266, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a solution (3S,6S,7R,8R)-3-(tert-butoxycarbonylamino)-6-methyl-8-(2(methylsulfonyloxy)ethyl)-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate (510 mg, 1.03 mmol) in DMF (3 mL) at room temperature (about 22° C.) was added NaI (1 g, 6.7 mmol). The resulting reaction mixture was heated to 80° C. and stirred for 48 h. After cooling to room temperature, saturated NaHCO3 solution (30 mL) and EtOAc (25 mL) were added. The phases were separated and the aqueous phase was extracted with EtOAc (2×25 mL). The combined EtOAc extracts were dried over Na2SO4, filtered, and concentrated to dryness. The crude residue was purified via column chromatography (SiO2, hexanes/EtOAc gradient) to afford the title compound (228 mg, 50%) as a white solid (228 mg, 50%): mp 103-104; 1H NMR (400 MHz, CDCl3) δ 8.00 (s, 1H), 5.43-5.15 (m, 2H), 5.06 (t, J=9.9 Hz, 1H), 4.93-4.77 (m, 2H), 4.19 (dt, J=11.1, 5.5 Hz, 1H), 4.05 (ddd, J=11.4, 8.9, 4.8 Hz, 1H), 3.60 (s, 1H), 2.71 (td, J=11.4, 2.8 Hz, 1H), 2.67-2.53 (m, 1H), 2.17-2.02 (m, 1H), 1.73 (dt, J=14.7, 7.4 Hz, 1H), 1.45 (s, J=15.6 Hz, 9H), 1.28 (d, J=6.3 Hz, 3H), 1.21 (dd, J=7.0, 0.5 Hz, 6H); ESIMS m/z 468 ([M+Na]+).

Aufarbeitung

  1. customThe resulting reaction mixture
  2. temperatureAfter cooling to room temperature
  3. customThe phases were separated
  4. extractionthe aqueous phase was extracted with EtOAc (2×25 mL)
  5. dry with materialThe combined EtOAc extracts were dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated to dryness
  8. customThe crude residue was purified via column chromatography (SiO2, hexanes/EtOAc gradient)

Quellen und Nachweise

ORD-Eintrag
ord-bec517b7689144f3971c2d6e9411debd
Quelldatensatz
uspto-grants-2015_09
Patentnummer
US09131690B2

Notizen zur Reaktion

Wird geladen…