[N:1]1([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:6][CH2:5][CH:4]([C:7]([O-:9])=O)[CH2:3][CH2:2]1.[NH2:17][CH:18]([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[CH:19]([C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)O>>[C:27]1([C:18]2[N:17]=[C:7]([CH:4]3[CH2:3][CH2:2][N:1]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:6][CH2:5]3)[O:9][C:19]=2[C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=2)[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=1Starting from 1.08 g of mono-tert-butyl piperidine-1,4-dicarboxylate and 1 g 2-amino-1,2-diphenyl-ethanol the product may be prepared as described in the literature (cf. Tet. 2001, 4867). The product is purified by chromatography (method B). 560 mg are obtained in the form of an oil. Analytical HPLC-MS (method A): RT=1.72 min.
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