EDCI (31 mg, 0.16 mmol) was added to a solution of furfuryl amine (14 mg, 0.15 mmol), the product from Step E (71 mg, 0.15 mmol) and HOBT.H2O (20 mg, 0.15 mmol) in DMF (2.5 mL). The reaction was stirred 4 h at rt and then concentrated at reduced pressure. The remaining material was dissolved in CH2Cl2, washed with water, dried, filtered and concentrated. Chromatography on silica gel afforded the title compound as a yellow solid (30 mg, 0.05 mmol, 33%): 1H NMR (400 MHz, DMSO-d6) δ 9.06 (t, 1H, J=6), 7.89 (d, 2H, J=8), 7.56 (br s, 1H), 7.38 (d, 2H, J=8), 7.22 (br t, 2H J˜8), 7.07 (t, 2H, J=9), 6.37 (br s, 1H), 6.26 (d, 1H, J=3), 4.46 (d, 2H, J=6), 3.90 (m, 4H), 3.77 (t, 2H, J=7), 3.06 (m, 2H), 2.99 (m, 2H), 2.54 (quint., 2H, J=7), 0.78 (t, 3H, J=7) ppm; ESI-MS m/z 569 (M+H)+;
