[C:1]([OH:7])([C:3]([F:6])([F:5])[F:4])=[O:2].C(OC([N:15]1[CH2:18][CH:17]([NH:19][C:20](=[O:36])[CH2:21][NH:22][C:23](=[O:35])[C:24]2[CH:29]=[C:28]([F:30])[CH:27]=[C:26]([C:31]([F:34])([F:33])[F:32])[CH:25]=2)[CH2:16]1)=O)(C)(C)C>>[OH:7][C:1]([C:3]([F:6])([F:5])[F:4])=[O:2].[NH:15]1[CH2:18][CH:17]([NH:19][C:20]([CH2:21][NH:22][C:23](=[O:35])[C:24]2[CH:29]=[C:28]([F:30])[CH:27]=[C:26]([C:31]([F:33])([F:34])[F:32])[CH:25]=2)=[O:36])[CH2:16]1The title compound was prepared as colorless oil from the TFA de-protection of 3-[2-(5-fluoro-3-trifluoromethyl-benzoylamino)-acetylamino]-azetidine-1-carboxylic acid tert-butylester (as prepared in the previous step) using the procedure described in Step E of Example 1.
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