HCID 68617097, compound → HCID 68616187, compound

Participants

Reaction Steps

3-[1-(3-hydroxy-propyl)-2-isobutyl-1H-benzimidazol-5-yl]-acrylic acid methyl ester (prepared according to the Example 1, step 1-3) (126.6 mg, 0.4 mmol) and 10% Pd/C (40 mg) in 10 mL of MeOH was hydrogenated using a hydrogen balloon overnight. After filtration through short-column silica gel, the filtrate was evaporated under reduced pressure to give 3-[1-(3-hydroxy-propyl)-2-isobutyl-1H-benzimidazol-5-yl]-propionic acid methyl ester (127 mg) in quantitative yield: MS m/z (M+H)+: 319; 1H NMR (400 MHz, MeOD) δ 0.95 (6H, d, J=6.4 Hz), 1.92 (2H, m), 2.19 (1H, m), 2.60 (2H, t, J=8.0 Hz), 2.74 (2H, d, J=7.2 Hz), 2.96 (2H, t, J=7.6 Hz), 3.50 (2H, t, J=4.1 Hz), 3.54 (3H, s), 4.25 (2H, t, J=7.2 Hz), 7.05 (1H, d, J=8.0 Hz), 7.30-7.40 (2H, m); 13C NMR (100 MHz, MeOD) δ 20.9 (2C), 27.3, 30.1, 31.5, 34.6, 35.3, 39.5, 50.1, 57.4, 109.1, 116.4, 122.1, 132.6, 134.2, 141.3, 154.2, 173.2.

Provenance & Evidence