(S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoic acid benzyl ester → (S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoic acid
Reaktionsgleichung
C([O:8][C:9](=[O:40])[C@@H:10]([NH:32][C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[CH2:11][CH2:12][CH2:13][O:14][Si:15]([C:28]([CH3:31])([CH3:30])[CH3:29])([C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)C1C=CC=CC=1>C(OCC)(=O)C>[C:36]([O:35][C:33]([NH:32][C@@H:10]([CH2:11][CH2:12][CH2:13][O:14][Si:15]([C:28]([CH3:31])([CH3:30])[CH3:29])([C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:9]([OH:40])=[O:8])=[O:34])([CH3:39])([CH3:37])[CH3:38]Komponenten
3
Versuchsvorschrift
To a solution of 1.92 g (S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoic acid benzyl ester in 40 ml ethyl acetate were added under argon 0.2 g Pd/C (10%) and the suspension was stirred under an atmosphere of hydrogen (3 bar) for 16 h. The suspension was filtered over a plug of Celite® and washed with ethyl acetate. The crude product was obtained after evaporation of the solvent. Yield: 1.61 g colorless oil.