O[N:2]=[C:3]([C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:4][CH2:5][CH2:6][NH:7][C:8](=[O:14])[O:9][C:10]([CH3:13])([CH3:12])[CH3:11]>C(O)C.[Pd]>[NH2:2][CH:3]([C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:4][CH2:5][CH2:6][NH:7][C:8](=[O:14])[O:9][C:10]([CH3:13])([CH3:11])[CH3:12]1,1-Dimethylethyl 4-(hydroxyimino)-4-phenylbutylcarbamate (2.3 g, 8.3 mmol), in absolute ethanol was hydrogenated over 10% palladium on charcoal (0.5 g) at 5 bar pressure for 20 h. The mixture was then filtered and the filtrate concentrated to dryness to afford the title compound as a colourless oil (2.36 g).
Wird geladen…