Reaction Steps
Using General Procedure B: Reaction of 3-methyl-pyridine-2-carbaldehyde and 2-[4-(1-pyridin-2-yl-ethylamino)-pentyl]-isoindole-1,3-dione in CH2Cl2 with NaBH(OAc)3 gave 2-{4-[(3-methyl-pyridin-2-ylmethyl)-(1-pyridin-2-yl-ethyl)-amino]-pentyl}-isoindole-1,3-dione, as (one diasteroisomer (0.101 g) and a mixture of two diastereoisomers (0.0770 g), with a total yield of 58%. Deprotection with H2NNH2.H2O using General Procedure E gave a colorless oil. Conversion to the HBr salt using General Procedure D gave a white solid, which was isolated as a pure diastereoisomer. 1H NMR (D2O) δ 1.08 (d, 3H, J=6.3 Hz), 1.32 (d, 3H, J=6.6 Hz), 1.37-1.59 (m, 3H), 1.61-1.85 (m, 1H), 2.50 (s, 3H), 2.71-2.76 (m, 1H), 2.90-2.95 (m, 2H), 4.35 (s, 2H), 4.68 (q, 1H, J=6.6 Hz), 7.84 (t, 1H, J=6.6 Hz), 8.01 (t, 1H, J=6.9 Hz), 8.20 (d, 1H, J=8.1 Hz), 8.34 (d, 1H, J=7.8 Hz), 8.56-8.63 (m, 2H), 8.81 (d, 1H, J=5.7 Hz); 13C NMR (D2O) δ 17.01, 17.19, 19.97, 24.75, 27.37, 39.88, 46.16, 56.59, 59.71, 125.76, 127.08, 127.18, 136.58, 138.12, 142.58, 148.25, 148.62, 153.57, 156.65. ES-MS m/z 313 (M+H). Anal. Calcd. for C19H28N4.3.1HBr.0.4H2O: C, 40.00; H, 5.64; N, 9.82; Br, 43.42. Found: C, 39.93; H, 5.66; N, 9.71; Br, 43.54.
