Reaktion #75963

Reaktionsgleichung

4-((2R)-2-{[[(2S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-3-(phenyloxy)propyl](phenylmethyl)amino]methyl}-3,4-dihydro-2H-chromen-6-yl)-2-pyridinecarboxylic acid

4-fluorobenzylamine

1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride

1-hydroxybenzotriazole

→

title compound

4-((2R)-2-{[[(2S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-3-(phenyloxy)propyl](phenylmethyl)amino]methyl}-3,4-dihydro-2H-chromen-6-yl)-N-[(4-fluorophenyl)methyl]-2-pyridinecarboxamide

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Einengenbefore being concentrated in vacuo
2. 2
   Sonstigeto remove volatile components
3. 3
   SonstigeThe crude residue was purified by flash chromatography on silica gel
4. 4
   Wascheneluted with 75:25 hexanes/ethyl acetate

Vorschrift

Into a solution of 4-((2R)-2-{[[(2S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-3-(phenyloxy)propyl](phenylmethyl)amino]methyl}-3,4-dihydro-2H-chromen-6-yl)-2-pyridinecarboxylic acid (Example 90, 82 mg, 0.13 mmol) in dichloromethane (2 mL) was added 4-fluorobenzylamine (33 mg, 0.26 mmol, 2.0 eq.), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (50 mg, 0.26 mmol, 2.0 eq.), and 1-hydroxybenzotriazole (35 mg, 0.26 mmol, 2.0 eq.). The solution was stirred overnight at room temperature before being concentrated in vacuo to remove volatile components. The crude residue was purified by flash chromatography on silica gel eluted with 75:25 hexanes/ethyl acetate. The title compound was obtained as a yellow oil (34 mg, 35%): 1H NMR (300 MHz, CDCl3) δ8.47 (d, 1 H), 8.40 (s, 2 H), 7.55 (dd, 1 H), 7.44-7.39 (m, 2 H), 7.34-7.29 (m, 4 H), 7.25-7.20 (m, 4 H), 7.01 (t, 2 H), 6.93-6.80 (m, 4 H), 4.64 (d, 2 H), 4.22-4.16 (m, 1 H), 4.11-4.05 (m, 1 H), 3.83 (s, 2 H), 3.75 (dd, 1 H), 2.94-2.80 (m, 2 H), 2.73-2.67 (m, 4 H), 1.71-1.57 (m, 2 H), 0.86 (s, 9H), 0.09 (s, 3 H), 0.05 (s, 3 H); MS m/z 746.5 (M+).

Quelle