Ammonia → HCID 86701301, compound

Participants

Reaction Steps

Benzyl (3S,7S,8S)-7,8-bis(benzyloxy)-2-oxo-1,5-dioxonan-3-ylcarbamate (71 mg, 0.140 mmol) was dissolved in MeOH (1 mL) and EtOAc (1 mL) and 2.0 molar (M) ammonia in ethanol (EtOH) (35 μL, 0.070 mmol) and 5% Pd/C (10 mass wt. %) were added. The air was removed by two cycles of evacuating the flask under vacuum and backfilling with H2. The reaction mixture was placed under an atmosphere of H2 (balloon, ˜1 atmosphere) and stirred at room temperature for 2 h. The reaction mixture was filtered through Celite®, and the filtrate was concentrated to afford the title compound as an off-white solid (47 mg, 91%): 1H NMR (400 MHz, CDCl3) δ 7.79-6.92 (m, 10H), 4.79-4.53 (m, 6H), 4.14 (dd, J=11.4, 3.6 Hz, 1H), 3.97 (dd, J=11.4, 7.2 Hz, 1H), 3.87-3.74 (m, 3H), 3.73-3.56 (m, 2H), 3.45 (ddd, J=7.8, 6.0, 1.8 Hz, 1H), 3.25 (dd, J=11.5, 7.9 Hz, 1H); 13C NMR (101 MHz, CDCl3) δ 175.95, 138.09, 138.04, 128.46, 128.40, 128.00, 127.88, 127.85, 127.74, 81.49, 79.46, 75.01, 73.66, 72.75, 71.53, 63.47, 54.33; ESIMS m/z 372.9 ([M+H]+).

Provenance & Evidence