反应详情

Following the procedure described in Step 4 of Example 6, [6-(3-Pentyl-benzofuran-2-yl)-naphthalen-2-yloxy]-acetic acid ethyl ester (0.34 g, 0.82 mmol), was hydrolyzed with potassium hydroxide (0.50 g, 8.9 mmol) in THF (20 mL) and water (10 mL). The title compound was obtained as an off-white solid (0.28 g), mp 163-165° C. Mass spectrum (+APCl, [M+H]+) m/z 389. 1HNMR (400 MHz, DMSO-d6): δ13.15 (br s, 1H), 8.24 (s, 1H), 7.99 (d, 1H, J=9.0 Hz), 7.93 (d, 1H, J=8.8 Hz), 7.85 (dd, 1H, J=8.5, 1.7 Hz), 7.69-7.66 (m, 1H), 7.59 (d, 1H, J=7.8 Hz), 7.35-7.25 (m, 4H), 4.82 (s, 2H), 2.98 (t, 2H, J=7.6 Hz), 1.72 (p, 2H, J=7.3 Hz), 1.42-1.27 (m, 4H), and 0.83 ppm (t, 3H, J=7.1 Hz). Elemental Analysis for C25H24O4.0.4H2O: Calculated: C, 75.89; H, 6.32; N, 0.00. Found: C, 75.9; H, 6.07; N, 0.17.