[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([O:17]CC3C=CC=CC=3)=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([O-])=O.[NH4+]>C(O)C.[Pd]>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([OH:17])=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]A solution of the product of Example 93A (680 mg, 2.103 mmol) in ethanol (20 mL) was treated with 10% palladium-on-carbon (68 mg) and ammonium formate (265 mg, 4.205 mmol), and stirred at room temperature under a nitrogen atmosphere for 1 hour. The reaction was filtered through a 0.45 μ PTFE membrane and the catalyst washed with methanol. The filtrate was concentrated by rotary evaporation under vacuum and the residue taken up in ethyl acetate (50 mL), washed with water (2×25 mL) and brine (25 mL), dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum to provide the title compound as a white solid (475 mg, 96%).
Wird geladen…
