[CH2:1]([O:3][C:4](=[O:32])[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH3:13])=[C:8]([O:14][C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-])=O)=[CH:17][C:16]=2[CH2:24][S:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:7]=1)[CH3:2].[Sn](Cl)Cl.C(Cl)Cl.C(=O)(O)[O-].[Na+]>CCO.O>[CH2:1]([O:3][C:4](=[O:32])[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH3:13])=[C:8]([O:14][C:15]2[CH:20]=[CH:19][C:18]([NH2:21])=[CH:17][C:16]=2[CH2:24][S:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:7]=1)[CH3:2][4-Methoxy-3-(4-nitro-2-phenylsulfanylmethyl-phenoxy)-phenyl]-acetic acid ethyl ester (0.4 g, 0.9 mmol) and tin(II) chloride (0.6 g, 2.7 mmol) were combined in EtOH (20 mL) and stirred overnight at 70° C. CH2Cl2, H2O, and sodium bicarbonate were added, and the mixture was filtered through Celite. The organic layer was separated and concentrated to give the title compound.
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