To a flame dried round bottom flask with 8-indol-1-yloctylamine (0.227 g, 0.930 mmol, preparation similar to step 1 of Example 54) in CH2Cl2 (10 mL) at room temperature was added 3,5-bis-(m-chlorophenyl)-4-(2-hydroxyethoxy)-benzoic acid (0.250 g, 0.620 mmol, prepared in step 2 of Example 55) followed by Et3N (0.259 mL, 1.86 mmol), HOBt (0.092 g, 0.682 mmol), and finally DCC (0.153 g, 0.744 mmol). After 3 days at this temperature, it was concentrated and then diluted with EtOAc (200 mL). The white solid (DCU) that formed was filtered off and washed with excess EtOAc. The organic layer was washed with 1 N HCl (20 mL), sat. aq. NaHCO3 (20 mL), and brine (20 mL) and then dried (MgSO4). After concentration, the residue was purified by the Biotage Flash 40 apparatus (30 to 50% EtOAc/petroleum ether) to afford the product (0.341 g, 87%) as a solid; 1H NMR (CDCl3) δ 1.21-1.38 (m, 8H), 1.46-1.63 (m, 3H), 1.75-1.89 (m, 2H), 3.27-3.49 (m, 6H), 4.11 (t, J=8.1 Hz, 2H), 6.01-6.13 (m, 1H), 6.47 (d, J=2.2 Hz, 1H), 7.05-7.13 (m, 2H), 7.19 (t, J=8.8 Hz, 1H), 7.39-7.46 (m, 5H), 7.48-7.55 (m, 2H), 7.58-7.66 (m, 3H), 7.74 (s, 2H); mass spectrum [(+) ESI], m/z 629 (M)+.
