Pyrrolidine → HCID 178419924, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of Compound 3 (30 mg, 0.08 mmol) and DIPEA (28 μl, 0.36 mmol) in dry THF (1 mL) was cooled to 0° C. Methanesulfonyl chloride (18 μl, 0.23 mmol) was added dropwise and the mixture was stirred at 0° C. for 3 hours. Pyrrolidine (32 μl 0.39 mmol) was added and the suspension was gradually warmed to room temperature and stirred for 2 hours. The reaction was quenched with water (0.1 mL) and the solvent was removed in vacuo. The crude product was purified by silica gel chromatography to give Compound 7 (13 mg, 38%) as a yellow powder. 1H NMR (300 MHz MeOD) δ 9.36 (s, 1H), 9.10 (d, 1H, J=2.1 Hz), 8.78 (d, 1H, J=2.1 Hz), 8.55 (s, 1H), 8.27 (d, 1H, J=7.8 Hz), 7.95 (m, 1H), 7.83 (m, 2H), 7.72 (dd, 1H, J=1.8, 7.2 Hz), 7.39 (m, 2H), 4.75 (s, 2H), 3.38 (b, 4H), 2.01 (b, 4H); MS (ESI) m/z: 446 (M+H+).

Provenance & Evidence