3-Pyridinecarboxaldehyde → HCID 22730881, compound

Participants

Reaction Steps

A mixture of Example 340A (65 mg, 0.1 mmol), NaBH3CN (48 mg, 0.75 mmol), 2N NaOH (0.15 mL), and 3-pyridinecarboxaldehyde (214 mg, 2 mmol) in acetic acid (0.5 mL) and methanol (1 mL) was stirred for 16 hours. The reaction mixture was concentrated, dissolved in 1:1 DMSO/methanol (1.0 mL) and purified by reverse phase preparative HPLC using 20-90% acetonitrile/water containing 0.1% TFA to provide the desired product. MS (ESI(−)) m/e 628 (M−H)−; 1H NMR (300 MHz, DMSO-d6) δ 8.78 (br t, 1H), 8.70 (d, 1H), 8.70 (dd, 1H), 8.60 (d, 1H), 8.05 (m, 1H), 7.95 (d, 2H), 7.62 (d, 2H), 7.60 (dd, 1H), 7.40-7.15 (m, 6H), 6.35 (m, 1H), 4.52 (d, 2H), 3.92 (m, 4H),3.45 (t, 4H), 2.82 (m, 2H).

Provenance & Evidence