[C:1]([N:8]1[CH2:12][CH2:11][CH2:10][C@H:9]1[C@@H:13]([CH2:17][N+:18]([O-])=O)[CH2:14][CH2:15]O)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]>CO.[Pd]>[C:1]([N:8]1[CH2:12][CH2:11][CH2:10][C@H:9]1[C@@H:13]1[CH2:14][CH2:15][NH:18][CH2:17]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]The ether compound from step 471a was treated by hydrogenation at 4 atm H2 over Pd/C in methanol to give the tile compound.
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