Fenproporex hydrochloride → 2-[((8S)-2-methyl-2,6,7,8-tetrahydrocyclopenta[e]indazol-8-yl]ethyl}acetamide
Reaktionsgleichung
[CH3:1][N:2]1[CH:10]=[C:9]2[C:4]([CH:5]=[CH:6][C:7]3[CH2:13][CH2:12][CH:11]([CH2:14][CH2:15]NC(=O)C)[C:8]=32)=[N:3]1.[CH3:20][CH:21]([NH:29]CCC#N)CC1C=CC=CC=1.Cl.CCCCCC.C([OH:43])C>>[CH3:1][N:2]1[CH:10]=[C:9]2[C:4]([CH:5]=[CH:6][C:7]3[CH2:13][CH2:12][C@H:11]([CH2:14][CH2:15][CH2:20][C:21]([NH2:29])=[O:43])[C:8]=32)=[N:3]1Komponenten
4
Versuchsvorschrift
N-[2-(2-Methyl-2,6,7,8-tetrahydrocyclopenta[e]indazol-8-yl)ethyl]acetamide (about 70 mg) was fractionated by high performance liquid chromatography (instrument: Prep LC 2000 (manufactured by Nihon Waters K.K.), column: CHIRALPAK AD (50 mm ID×500 mm L, manufactured by Dicel Chemical Industries, Ltd.), mobile phase: hexane/ethanol=90/10, flow rate: 80 mL/min, column temperature: room temperature, sample concentration: 1.0 mg/mL (hexane/ethanol=90/10), injection amount: about 35 mg). A fraction solution containing an optically active compound having a shorter retention time under the above-mentioned high performance liquid chromatography conditions was concentrated. The concentrate was re-dissolved in ethanol, and concentrated to dryness. Hexane was further added, and the mixture was concentrated to dryness again to give the title compound (37 mg, 99% ee). The enantiomer excess (ee) was measured by high performance liquid chromatography (column: CHIRALPAK AD-H (4.6 mm ID×250 mm L, manufactured by Dicel Chemical Industries, Ltd.), mobile phase: hexane/ethanol=90/10, flow rate: 1.0 mL/min, column temperature: room temperature, sample concentration: 1 mg/mL (hexane/ethanol=90/10), injection volume: 10 μL).