3-Cyclohexylmethoxy-benzoic acid (300 mg, 1.3 mmol), HOBT (294 mg, 1.9 mmol), EDC (245 mg, 1.3 mmol), and 4-amino-1-hydroxymethyladamantane (232 mg, 1.28 mmol) were suspended in DMF (2.5 ml) before DIPEA (0.44 ml, 2.6 mmol) was added. The reaction mixture was stirred at 20° C. overnight. The reaction mixture was purified directly by Preparative HPLC to give 364 mg of the title compound as a mixture of two isomers. 1H NMR (400 MHz, CDCl3) δ: 7.29-7.34 (m, 2H), 7.21-7.26 (m, 1H), 6.98-7.04 (m, 1H), 3.79 (dd, 2H), 6.43 (dd, 1H), 4.10-4.25 (m, 1H), 3.79 (dd, 2H), 3.23 (d, 2H), 2.43 (s, 1H), 2.10-2.16 (m, 2H), 1.97-2.04 (m, 1H), 1.55-1.92 (m, 14H), 1.39-1.47 (m, 1H), 1.15-1.35 (m, 13H), 1.05 (q, 1H).
