Example 100

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To a solution of compound 487 (4 g, 9.85 mmol) in MeOH (40 mL) was added Pd/C (0.4 g, 10 wt %) in a hydrogenation bottle. The mixture was stirred under 1 atm H2 overnight, filtered through Celite (filter aid), and the filtrate was concentrated to afford compound 488 (3.6 g, yield-100%). ESI m/z: calcd for C21H35N2O4 [M+H]+: 379.25, found 379.25.

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