[O:1]=[C:2]1[C:11]2[CH2:10][CH2:9][CH2:8][CH2:7][C:6]=2[C:5]([CH2:12][CH:13]2[CH2:18][N:17](C(OCC3C=CC=CC=3)=O)[CH2:16][CH2:15][N:14]2[C:29]([O:31][C:32]([CH3:35])([CH3:34])[CH3:33])=[O:30])=[N:4][NH:3]1>O1CCCC1.[Pd]>[O:1]=[C:2]1[C:11]2[CH2:10][CH2:9][CH2:8][CH2:7][C:6]=2[C:5]([CH2:12][CH:13]2[CH2:18][NH:17][CH2:16][CH2:15][N:14]2[C:29]([O:31][C:32]([CH3:35])([CH3:34])[CH3:33])=[O:30])=[N:4][NH:3]1A solution of EXAMPLE 257D (0.77 g, 1.6 mmol) in tetrahydrofuran (100 ml) was treated with 10% palladium on carbon (85 mg, 0.8 mmol) at room temperature under hydrogen (balloon) overnight. The catalyst was removed by filtration, and the filtrate was concentrated. The residue was purified by flash chromatography (0-15% gradient of methanol in CH2Cl2) to provide the title compound. MS (DCI/NH3) m/z 349 (M+H)+.
Wird geladen…