2-Aminopyridine → HCID 54765572, compound

HRID 1925918Notes

Reaction equation

HRID 1925918 reaction equation
[Cl:1][C:2]1[C:26]2[O:25][C:9]3[C:10](=[O:24])[N:11]([C@@H:13]([CH2:17][CH:18]4[CH2:23][CH2:22][CH2:21][CH2:20][CH2:19]4)[C:14](O)=[O:15])[CH2:12][C:8]=3[CH2:7][C:6]=2[CH:5]=[CH:4][CH:3]=1.[NH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=1.ON1C2C=CC=CC=2N=N1>C(Cl)Cl.O>[Cl:1][C:2]1[C:26]2[O:25][C:9]3[C:10](=[O:24])[N:11]([C@@H:13]([CH2:17][CH:18]4[CH2:23][CH2:22][CH2:21][CH2:20][CH2:19]4)[C:14]([NH:27][C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=4)=[O:15])[CH2:12][C:8]=3[CH2:7][C:6]=2[CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 104392-AminopyridineHCID 757711-HydroxybenzotriazoleHCID 67521062HCID 67521062, compound

Product 1

HCID 54765572HCID 54765572, compoundYield 30%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

A solution of (S)-2-(5-chloro-3-oxo-3,9-dihydro-1H-chromeno[2,3-c]pyrrol-2-yl)-3-cyclohexyl-propionic acid (100 mg, 0.27 mmol), commercially available 2-aminopyridine (30 mg, 0.31 mmol), N-ethyl-N-dimethyaminopropyl carbodiimide hydrochloride (EDCI. HCl) (40 mg, 0.29 mmol), and N-hydroxybenzotriazole (HOBt) (56 mg, 0.29 mmol) in methylene chloride (5 mL) was stirred for 16 hours at 25° C. The reaction mixture was diluted with water and extracted with ethyl acetate (3×). The combined organic layers were dried over anhydrous sodium sulfate and concentrated in vacuo. The resulting residue, upon silica gel flash chromatography using hexane-ethyl acetate gradiant elution, afforded (S)-2-(5-chloro-3-oxo-3,9-dihydro-1H-chromeno[2,3-c]pyrrol-2-yl)-3-cyclohexyl-N-pyridin-2-ylpropionamide (36 mg, 30%), as a white solid. 1H NMR (DMSO-d6) δ: 10.86 (br. s., 1H), 8.34 (d, J=3.4 Hz, 1H), 8.00 (d, J=8.3 Hz, 1H), 7.77 (t, J=7.6 Hz, 1H), 7.40 (d, J=7.8 Hz, 1H), 7.23 (d, J=7.3 Hz, 1H), 7.05-7.16 (m, 2H), 5.10 (d, J=6.8 Hz, 1H), 4.43 (d, J=19.1 Hz, 1H), 4.06 (d, J=19.1 Hz, 1H), 3.83 (br. s., 2H), 1.51-1.87 (m, 7H), 0.75-1.30 (m, 6H).

Workup

  1. extractionextracted with ethyl acetate (3×)
  2. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
  3. concentrationconcentrated in vacuo
  4. washhexane-ethyl acetate gradiant elution

Sources & evidence

ORD record
ord-51a8ca917a0049e486f6f0f18c87ad3b
Source dataset
uspto-grants-2012_05
Patent number
US08178689B2

Reaction notes

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