Hydrochloric Acid → HCID 71262232, compound

Participants

Reaction Steps

A mixture of 1-amino-3-{[2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinolin-4-yl]amino}propan-2-ol (80 mg, 0.18 mmol, prepared in analogy to Example 9-7) and potassium acetate (89 mg, 0.91 mmol) in a mixture solution of methanol and water (7 ml, V/V=6/1) was added cyanogen bromide (89 mg, 0.84 mmol) at 0° C. After being stirred at room temperature for 3 hours, the mixture was stirred further with concentrated hydrochloric acid (3 mL) for 1 hour, and then concentrated in vacuo. The residue was dissolved in a saturated aqueous solution of sodium bicarbonate (10 mL) and extracted with dichloromethane (15 mL×3). The combined organic layers were dried over sodium sulfate and concentrated in vacuo. The residue was purified by flash column (10% methanol in dichloromethane) to afford 32 mg of the desired product as a white solid. MS obsd. (ESI+) [(M+H)+] 452, 1H NMR (400 MHz, DMSO-d6) δ ppm 7.92-7.87 (m, J=4.6 Hz, 2 H), 7.72 (s, 1 H), 7.65-7.62 (t, J=3.7 Hz, 1 H), 7.49-7.45 (t, J=3.9 Hz, 1 H), 7.32 (d, J=2.1 Hz, 1 H), 7.23 (d, J=2.1 Hz, 1 H), 6.85 (t, J=2.6 Hz, 1 H), 6.46 (brs, 2 H), 6.10 (s, 1 H), 5.10 (s, 2 H), 4.82-4.77 (m, J=4.8 Hz, 1 H), 4.49 (brs, 2 H), 3.75 (m, 1 H), 3.63 (s, 2 H), 3.52 (m, 3 H), 2.35 (s, 3 H).

Provenance & Evidence