Reaktion #338271

Reaktionsgleichung

HOBT

N1,N1-bis-(3-methyl-pyridin-2-ylmethyl)-propane-1,3-diamine

6-hydroxy-nicotinic acid

DIPEA

EDCI

→

free base

Ausbeute 14.0%

N-{3-[Bis-(3-methyl-pyridin-2-ylmethyl)-amino]-propyl}-6-hydroxy-nicotinamide

Ausbeute 14.0%

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigePurification of the crude material by column chromatography on silica gel (10:1:1 CH2Cl2-MeOH—NH4OH)

Vorschrift

Using General Procedure G: To a solution of N1,N1-bis-(3-methyl-pyridin-2-ylmethyl)-propane-1,3-diamine (0.24 g, 0.84 mmol) in dry DMF (4 mL) was added 6-hydroxy-nicotinic acid (0.121 g, 0.87 mmol) followed by EDCI (0.182 g, 0.95 mmol), HOBT (0.128 g, 0.95 mmol), and DIPEA (0.25 mL, 1.44 mmol). Purification of the crude material by column chromatography on silica gel (10:1:1 CH2Cl2-MeOH—NH4OH) provided 47 mg (14%) of the free base of the title compound as a colorless oil. Conversion to the HBr salt gave COMPOUND 232 (65 mg, 78%) as a white solid. 1H NMR (D2O) δ 1.74-1.84 (m, 2H), 2.47 (s, 6H), 2.64-2.69 (m, 2H), 3.24 (dd, 2H, 6.3 Hz), 4.31 (s, 4H), 6.62 (d, 1H, J=9.6 Hz), 7.80-7.84 (m, 3H), 7.95 (d, 1H, J=2.1 Hz), 8.32 (d, 2H, J=8.1 Hz), 8.58 (d, 2H, J=6.0 Hz); 13C NMR (D2O) δ 17.24, 25.16, 37.61, 51.91, 53.99, 115.32, 119.34, 126.02, 137.52, 137.87, 138.75, 140.81, 148.48, 150.88, 166.80; ES-MS m/z 406 (M+H). Anal. Calcd. for C23H27N5O2.3.2HBr.3.0H2O: C, 38.45; H, 5.08; N, 9.75; Br, 35.59. Found: C, 38.32; H, 4.94; N, 9.48; Br, 35.96.

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