[CH3:1][O:2][C:3](=[O:14])[C:4]([CH2:12][CH3:13])([CH2:7][NH:8][CH:9]([CH3:11])[CH3:10])[CH2:5][CH3:6].[C:15]1(=O)CCC[CH2:16]1>>[CH3:1][O:2][C:3](=[O:14])[C:4]([CH2:7][NH:8][CH:9]1[CH2:10][CH2:16][CH2:15][CH2:11]1)([CH2:12][CH3:13])[CH2:5][CH3:6]The title compound was prepared by an analogous method to the preparation of Intermediate 200, on a 50 mmol scale utilising Cyclopentanone (Aldrich; 6.33 g, 75 mmol), and distillation at 50° C. and 0.53 mbar pressure, as a clear oil (7.5 g, 65%)
Wird geladen…