Sodium Iodide → HCID 86701266, compound

HRID 2276067Notes

Reaction equation

HRID 2276067 reaction equation
[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]

Participants

6

Reactant 4

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

Product 1

HCID 86701266HCID 86701266, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

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]+).

Workup

  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)

Sources & evidence

ORD record
ord-bec517b7689144f3971c2d6e9411debd
Source dataset
uspto-grants-2015_09
Patent number
US09131690B2

Reaction notes

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