3-[(3,4-Dimethoxy-benzoylamino)-methyl]-benzoic acid (40 mg, 0.127 mmol), prepared as described in Example 8, was combined with EDC (38.3 mg, 0.2 mmol) and HOBt (24.3 mg, 0.18 mmol) in a reaction vial, and DMF (1 mL) was added followed by N-methylmorpholine (0.025 mL, 0.22 mmol). The resulting mixture was agitated for 1 h, then 3-dimethylaminomethyl-phenylamine (25.5 mg, 0.17 mmol) was added as a solution in DMF (0.5 mL), and the resulting mixture was agitated overnight. The product was purified directly by preparative HPLC using an acetonitrile/water/formic acid gradient providing the title compound as a formate salt (40 mg, 70% yield), MS analysis electrospray, 448 (M+H).
