[O:1]=[S:2]1(=[O:30])[C:7]2[CH:8]=[C:9]([O:12][C:13]3[CH:14]=[C:15]([P:19](=[O:26])([O:23]CC)[O:20][CH2:21][CH3:22])[CH:16]=[CH:17][CH:18]=3)[CH:10]=[CH:11][C:6]=2[N:5]2[CH2:27][CH2:28][CH2:29][CH:4]2[NH:3]1.Cl>[OH-].[Na+]>[O:30]=[S:2]1(=[O:1])[C:7]2[CH:8]=[C:9]([O:12][C:13]3[CH:14]=[C:15]([P:19](=[O:23])([OH:26])[O:20][CH2:21][CH3:22])[CH:16]=[CH:17][CH:18]=3)[CH:10]=[CH:11][C:6]=2[N:5]2[CH2:27][CH2:28][CH2:29][CH:4]2[NH:3]10.66 mmol of the product of Example 52 in 3 ml of 1N NaOH is stirred for 8 h at 70° C. The reaction solution is acidified with 1N HCl and the white precipitate is filtered off to yield the expected product.
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