[CH3:1][C:2]([CH3:21])([CH3:20])[C@H:3]([NH:11][C:12]([O:14][C@H:15]1[CH2:19][CH2:18][O:17][CH2:16]1)=[O:13])[C:4]([O:6]C(C)(C)C)=[O:5].FC(F)(F)C(O)=O>ClCCl>[CH3:1][C:2]([CH3:21])([CH3:20])[C@H:3]([NH:11][C:12]([O:14][C@H:15]1[CH2:19][CH2:18][O:17][CH2:16]1)=[O:13])[C:4]([OH:6])=[O:5]To a solution of the product from Example 59A (0.037 g, 0.123 mmol) in dichloromethane (1.2 mL) was added trifluoroacetic acid (1.2 mL) and the mixture was stirred at room temperature for 2 hours. The solvent was evaporated to give the title compound which was used without further purification.
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