Trifluoroacetic acid → 3-(4-(2-(5-Amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenoxy)propylphosphonic acid

Participants

Reaction Steps

3-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenoxy)propylphosphonic acid (1) was prepared according to the procedure described in Example 1—Step 3, but using diethyl 3-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenoxy)propylphosphonate from the previous step. TFA was added to the 1H NMR sample to solubilize the compound for analysis. The 1H NMR (Dimethylsulfoxide-d6) obtained for 3-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenoxy)propylphosphonic acid (1) was: δ 9.72 (br, 1H), 9.01 (s, 1H), 8.96 (br, 1H), 8.85 (s, 1H), 8.54 (d, 1H, J=8.4 Hz), 7.54 (s, 1H), 7.42 (d, 1H, J=8.2 Hz), 7.08 (d, 1H, J=8.4 Hz), 6.74 (s, 1H), 6.66 (d, 1H, J=8.3 Hz), 3.95 (t, 2H, J=6.4 Hz), 3.14 (t, 2H, J=8.6 Hz), 2.97 (t, 2H, J=8.6 Hz), 2.50 (s, 3H), 2.27 (s, 3H), 1.91-1.81 (m, 2H), 1.67-1.56 (m, 2H). LRMS [M+H]=466.2

Provenance & Evidence