[CH:1]1([CH2:4][O:5][C:6]2[CH:27]=[CH:26][C:9]([C:10]([N:12]([C@H:14]3[CH2:23][CH2:22][C:21]4[C:16](=[CH:17][CH:18]=[C:19]([CH:24]=O)[CH:20]=4)[CH2:15]3)[CH3:13])=[O:11])=[CH:8][CH:7]=2)[CH2:3][CH2:2]1.C1COCC1.[O:33]1[CH2:38][CH2:37][CH:36]([CH2:39][NH2:40])[CH2:35][CH2:34]1.C([BH3-])#N.[Na+]>C(O)(=O)C>[CH:1]1([CH2:4][O:5][C:6]2[CH:27]=[CH:26][C:9]([C:10]([N:12]([CH3:13])[C@H:14]3[CH2:23][CH2:22][C:21]4[C:16](=[CH:17][CH:18]=[C:19]([CH2:24][NH:40][CH2:39][CH:36]5[CH2:37][CH2:38][O:33][CH2:34][CH2:35]5)[CH:20]=4)[CH2:15]3)=[O:11])=[CH:8][CH:7]=2)[CH2:3][CH2:2]1To a mixture of 4-cyclopropylmethoxy-N—((S)-6-formyl-1,2,3,4-tetrahydronaphthalen-2-yl)-N-methylbenzamide (0.20 g), THF (5 ml), C-(tetrahydropyran-4-yl)methylamine (63 mg) and acetic acid (33 mg) was added polymer-bound sodium cyanoborohydride (0.55 mmol), and the suspension was shaken at room temperature for 12 hours. The polymer was filtered off with suction and the filtrate was concentrated. The residue was purified by preparative HPLC. The product was thus obtained with the monoisotopic molecular weight of 462.29 (C28H38N2O3); MS (ESI): 463.3 (M+H+).
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