Methyl 4-[bis(tert-Butoxy)phosphoryl-fluoromethyl]-N-(benzyloxycarbonyl)-D,L-phenylalaninate → Methyl 4-[bis(tert-Butoxy)phosphoryl-fluoromethyl]-D,L-phenylalaninate
反応式
[C:1]([O:5][P:6]([CH:13]([F:37])[C:14]1[CH:36]=[CH:35][C:17]([CH2:18][CH:19]([C:31]([O:33][CH3:34])=[O:32])[NH:20]C(OCC2C=CC=CC=2)=O)=[CH:16][CH:15]=1)([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7])([CH3:4])([CH3:3])[CH3:2]>CO.[Pd]>[C:9]([O:8][P:6]([CH:13]([F:37])[C:14]1[CH:15]=[CH:16][C:17]([CH2:18][CH:19]([C:31]([O:33][CH3:34])=[O:32])[NH2:20])=[CH:35][CH:36]=1)([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])([CH3:10])([CH3:11])[CH3:12]参加物
4
実験手順
Compound 20 (1.09 g, 2.03 mmol) in anhydrous MeOH (50 mL) was hydrogenated over 10% Pd.C (436 mg) under H2 (45 psi) in a Parr apparatus. The vessel was evacuated and replenished with H2 at approximately 30 minute intervals. After 4 hours, the mixture was removed, filtered through celite and solvent removed under reduced pressure, yielding crude 21 (813 mg). Purification by silica gel chromatography afforded pure 21 (694 mg, 85%).