Piperidin-4-ol → HCID 53769526, Verbindung
Reaktionsgleichung
[OH:1][CH:2]1[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.[C:8]([NH:15][C@H:16]([C:25](O)=[O:26])[CH2:17][C:18]1[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=1)([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9]>C(OCC)(=O)C>[C:11]([O:10][C:8](=[O:9])[NH:15][C@@H:16]([CH2:17][C:18]1[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=1)[C:25]([N:5]1[CH2:6][CH2:7][CH:2]([OH:1])[CH2:3][CH2:4]1)=[O:26])([CH3:14])([CH3:12])[CH3:13]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
4-Hydroxypiperidine (3.9 mmol) and Boc-L-tyrosine (3.7 mmol) were coupled according to Procedure A (0-25° C. reaction temperature, 60 hour reaction time) with the following workup: the reaction mixture was diluted with ethyl acetate and washed once with base, the base layer was acidified with 2 N HCl and extracted three times with chloroform, and the chloroform extracts concentrated. The resulting foam was purified by chromatography on silica gel eluted with 1-8% ethanol in dichloromethane containing 0.5% NH4OH. Yield 550 mg, 41%; HPLC (40/60) 5.02 minutes (87%).