C([NH:14][CH:15]([P:26]([OH:28])[OH:27])[CH2:16][C:17]1[C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[NH:19][CH:18]=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(NC(P(O)O)C(C)C)(C1C=CC=CC=1)C1C=CC=CC=1>>[NH2:14][CH:15]([P:26]([OH:28])[OH:27])[CH2:16][C:17]1[C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[NH:19][CH:18]=1The procedure described in Example 36B was repeated using DL-1-benzhydrylamino-2-(indol-3-yl)-ethanephosphonous acid instead of DL-1-benzhydrylamino-2-methylpropanephosphonous acid to give DL-1-amino-2-(indol-3-yl)-ethanephosphonous acid.
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