Acetone → HCID 67126378, compound

Participants

Reaction Steps

To a solution of EXAMPLE 226B (79 mg) in tetrahydrofuran (3 mL) and acetic acid (1 mL) was added acetone (54 mg) and MP-cyanoborohydride (150 mg, 2.25 mmol/g). The mixture was stirred overnight. The mixture was filtered. The filtrate was concentrated and the residue was loaded on a silica gel cartridge and eluted with 5 to 10% 7N NH3 in methanol in dichloromethane to provide the title compound. 1H NMR (300 MHz, dimethylsulfoxide-d6) δ 12.09 (s, 1H), 8.34 (m, 1H), 7.93 (m, 2H), 7.66 (m, 4H), 7.35 (d, 2H), 7.06 (d, 2H), 6.89 (m, 1H), 6.74 (dd, 1H), 6.59 (dd, 1H), 6.50 (d, 1H), 3.11 (m, 6H), 2.73 (m, 4H), 2.26 (m, 9H), 1.97 (s, 3H), 1.40 (t, 2H), 1.23 (s, 8H), 0.94 (s, 6H).

Provenance & Evidence