[NH2:1][C@@H:2]([CH2:6][NH:7][C:8](=[O:22])[NH:9][C:10]1[CH:15]=[C:14](Cl)[CH:13]=[C:12]([S:17]([OH:20])(=[O:19])=[O:18])[C:11]=1[OH:21])[C:3]([OH:5])=[O:4].[H][H]>O.CO.[Pd]>[NH2:1][C@@H:2]([CH2:6][NH:7][C:8](=[O:22])[NH:9][C:10]1[CH:15]=[CH:14][CH:13]=[C:12]([S:17]([OH:20])(=[O:18])=[O:19])[C:11]=1[OH:21])[C:3]([OH:5])=[O:4]The compound obtained in Example 6 was dissolved in water and methanol, to which a catalyst amount of Pd/C was added, and the resultant was stirred for three days in a hydrogen atmosphere. After filtrating the catalyst, the solvent was distilled away, and the resultant was purified using purification step A to obtain the title compound.
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