Acetic Acid → HCID 91317120, compound

Participants

Reaction Steps

A solution of Example 280A (20 mg, 0.029 mmol) in 1,2-dichloroethane (0.3 mL) was treated with isovaleraldehyde (6.2 μL, 2 equivalents), acetic acid (3.3 μL, 2 equivalents), and sodium triacetoxyborohydride (18.5 mg, 3 equivalents) at 25° C. for 16 hrs. The mixture was partitioned between dichloromethane and saturated sodium bicarbonate. The organic layer was separated, washed with brine, dried over magnesium sulfate, filtered, and the solvents were evaporated. The residue was purified by HPLC reverse phase chromatography using water (0.1% TFA):acetonitrile (95:5) to acetonitrile (100%) to give 8 mg (36%) of the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 0.78 (dd, J=13.79, 6.43 Hz, 12H), 0.91 (m, 9H), 1.25 (m, 3H), 1.62 (m, 1H), 1.77 (d, J=8.82 Hz, 1H), 2.58 (m, 3H), 2.69 (m, 4H), 2.79 (m, 2H), 3.09 (m, 3H), 3.37 (s, 3H), 3.81 (m, 2H), 3.95 (m, 2H), 4.10 (s, 1H), 4.36 (m, 2H), 4.66 (s, 1H), 7.06 (m, 5H), 7.20 (m, 1H), 7.44 (m, 1H), 8.96 (s, 2H), 9.17 (s, 1H), 9.48 (s, 1H).

Provenance & Evidence