ethyl (1R,3R,4S)-2-[(S)-1-phenylethyl]-2-azabicyclo[2.2.1]hept-5-ene-3-carboxylate → ethyl (1S,3R,4R)-2-[(S)-1-phenylethyl]-2-azabicyclo[2.2.1]heptane-3-carboxylate
反応式
[C:1]1([C@@H:7]([N:9]2[C@@H:14]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[C@H:13]3[CH2:20][C@@H:10]2[CH:11]=[CH:12]3)[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>C(OCC)(=O)C.[Pd]>[C:1]1([C@@H:7]([N:9]2[C@@H:14]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[C@H:13]3[CH2:20][C@@H:10]2[CH2:11][CH2:12]3)[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1参加物
4
実験手順
To a solution of ethyl (1R, 3R, 4S)-2-[(S)-1-phenylethyl]-2-azabicyclo[2.2.1]hept-5-ene-3-carboxylate (791 mg, 2.91 mmol) obtained in Example 3 (a) in ethyl acetate (15 ml) was added 10% Pd—C (53 mg), and the mixture was stirred under a hydrogen atmosphere at room temperature for 16 hours. After a filtration through Celite, the solvent was concentrated. The residue was purified by silica gel column chromatography (5% ethyl acetate/hexane), to give ethyl (1S, 3R, 4R)-2-[(S)-1-phenylethyl]-2-azabicyclo[2.2.1]heptane-3-carboxylate (601 mg, 76%).