Acetic Acid → N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (325 mg, 1.0 mmol) in MeOH (10 mL) was added dihydro-2H-pyran-4(3H)-one (88 mg, 1.0 mmol) and AcOH (0.05 mL). The mixture was stirred at 25° C. for 2 h. NaBH3CN (630 mg, 10.0 mmol) was added, and the resulting mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (200 mg, Yield 48.9%). 1H NMR (CD3OD, 400 MHz): δ 8.44 (brs, 1H), 7.32-7.20 (m, 3H), 7.20-7.13 (m, 2H), 7.13-7.09 (m, 1H), 7.08-7.00 (m, 1H), 6.86-6.77 (m, 1H), 4.39 (s, 2H), 4.35-4.25 (m, 1H), 4.03-3.89 (m, 2H), 3.63-3.40 (m, 7H), 3.31-3.07 (m, 4H), 2.06-1.92 (m, 2H), 1.55-1.40 (m, 2H). LCMS (m/z): 410.2 (M+1).

Provenance & Evidence