Reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]([CH2:10][CH2:11][CH2:12][C:13]([OH:15])=O)=[CH:2]1.[NH2:16][CH2:17][CH:18]1[CH2:23][CH2:22][C:21]([N:30]([CH3:32])[CH3:31])([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:20][CH2:19]1.[Cl-:33].[CH3:34][O:35]C1N=C(OC)N=C([N+]2(C)CCOCC2)N=1.Cl>CC(=O)CC.C(O)C.CO>[ClH:33].[CH3:31][N:30]([CH3:32])[C:21]1([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:22][CH2:23][CH:18]([CH2:17][NH:16][C:13](=[O:15])[CH2:12][CH2:11][CH2:10][C:3]2[C:4]3[C:9](=[CH:8][CH:7]=[CH:6][CH:5]=3)[NH:1][CH:2]=2)[CH2:19][CH2:20]1.[CH3:31][N:30]([CH3:32])[C:21]1([C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)[CH2:20][CH2:19][CH:18]([CH2:17][NH:16][C:34](=[O:35])[CH:10]([C:3]2[C:4]3[C:9](=[CH:8][CH:7]=[CH:6][CH:5]=3)[NH:1][CH:2]=2)[CH2:11][CH3:12])[CH2:23][CH2:22]1Participants
Reactant 4
Product 2
Reagents, catalysts & solvents 2
Procedure
4-(1H-Indol-3-yl)butyric acid (232 mg, 1.0 mmol.), the mixture of the diastereoisomers of (4-aminomethyl-1-phenylcyclohexyl)dimethylamine (203 mg, 1.0 mmol.) and 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (415 mg, 1.5 mmol.) were dissolved in abs. methanol and stirred for 20 h at RT. For working up, the mixture was concentrated and the residue was taken up in water (15 ml), adjusted to pH 11 with 5M NaOH and extracted with EE (4×20 ml). The organic phase was washed with 1M NaOH (3 ml), dried, filtered and concentrated. The residue was a mixture of the bases of the diastereoisomeric target products, which were separated by flash chromatography on silica gel (45 g) (eluant: 700 ml methanol/EE 3:1). The non-polar diastereoisomer was obtained in a yield of 163 mg (0.39 mmol.) and was dissolved in 2-butanone/ethanol (7 ml/2 ml); isopropanolic 5M HCl (125 μl, 0.62 mmol.) was added and stirring was carried out for 2 h at RT. Concentration and drying in vacuo yielded the hydrochloride of the non-polar diastereoisomer of N-(4-dimethylamino-4-phenylcyclohexylmethyl)-2-(1H-indol-3-yl)butyramide in the form of a slightly hygroscopic white solid (177 mg, m.p. 95–100° C.).
Workup
- dissolutionwere dissolved in abs
- concentrationthe mixture was concentrated
- extractionextracted with EE (4×20 ml)
- washThe organic phase was washed with 1M NaOH (3 ml)
- customdried
- filtrationfiltered
- concentrationconcentrated
- additiona mixture of the bases of the diastereoisomeric target products, which
- customwere separated by flash chromatography on silica gel (45 g) (eluant: 700 ml methanol/EE 3:1)
- customThe non-polar diastereoisomer was obtained in a yield of 163 mg (0.39 mmol.)
- concentrationConcentration
- customdrying in vacuo
Sources & evidence
- ORD record
- ord-a546b773c4bb4beebee5ed137649b1a7
- Source dataset
- uspto-grants-2007_02
- Patent number
- US07173045B2
Linked notes
Loading…