Sodium borohydride → HCID 71556958, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 143b (110 mg, 0.2 mmol), NaBH4 (30 mg, 0.8 mmol), and MeOH (5 mL) was stirred at 25° C. for 30 mins. The mixture was evaporated in vacuo and the residue was extracted with EtOAc (10 mL×2). The combined EtOAc extract was concentrated under reduced pressure and the residue was purified with reverse-phase prep-HPLC to afford 143 (48 mg, 44%). LCMS: [M+H]+ 529. 1H NMR (500 MHz, DMSO) δ 9.23 (s, 1H), 8.76 (d, J=2.5, 1H), 8.65 (s, 1H), 8.51-8.49 (m, 1H), 8.31 (m, 1H), 7.67 (d, J=3.0, 1H), 7.38-7.37 (m, 1H), 7.33-7.31 (m, 1H), 5.02-5.01 (m, 1H), 4.43 (d, J=2.5, 2H), 4.18-4.15 (m, 1H), 3.83-3.81 (m, 1H), 3.61-3.59 (m, 3H), 3.03-2.99 (m, 1H), 2.91-2.89 (m, 1H), 2.76 (s, 2H), 2.60-2.53 (m, 2H), 1.23-1.22 (m, 6H)

Provenance & Evidence