Sodium Iodide → HCID 86701268, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (3S,6S,7R,8R)-3-(tert-butoxycarbonylamino)-6-methyl-8-(2(methylsulfonyloxy)ethyl)-4,9-dioxo-1,5-dioxonan-7-yl isobutyrate (350 mg, 0.71 mmol) in DMF (3 mL) at room temperature (about 22° C.) was added NaI (1.06 g, 7.06 mmol), and the resulting reaction mixture was heated to 60° C. and stirred for 6 h. The reaction mixture was partitioned between sat'd aqueous NaHCO3 solution (20 mL) and EtOAc (25 mL) and the phases were separated. The aqueous phase was extracted with EtOAc (2×25 mL) and 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 (300 mg, 81%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 5.43-5.15 (m, 2H), 5.07 (t, J=9.8 Hz, 1H), 4.95-4.75 (m, 2H), 3.72-3.51 (m, 1H), 3.24 (ddd, J=10.6, 6.6, 4.3 Hz, 1H), 3.00-2.87 (m, 1H), 2.82 (td, J=10.9, 3.0 Hz, 1H), 2.62 (hept, J=7.0 Hz, 1H), 2.35-2.21 (m, 1H), 1.86-1.69 (m, 1H), 1.45 (s, 9H), 1.28 (d, J=6.3 Hz, 3H), 1.22 (dd, J=7.0, 3.9 Hz, 6H); ESIMS m/z 550 ([M+Na]+).

Provenance & Evidence