Hydrochloric Acid → HDLeu-MetNH2
Reaktionsgleichung
[NH:1](C(OC(C)(C)C)=O)[C@@H:2]([C:7]([NH:9][C@H:10]([C:15]([NH2:17])=[O:16])[CH2:11][CH2:12][S:13][CH3:14])=[O:8])[CH2:3][CH:4]([CH3:6])[CH3:5].Cl>C(O)(=O)C>[NH2:1][C@@H:2]([C:7]([NH:9][C@H:10]([C:15]([NH2:17])=[O:16])[CH2:11][CH2:12][S:13][CH3:14])=[O:8])[CH2:3][CH:4]([CH3:6])[CH3:5]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Condensation of BocDLeuOH (2.49 g.) and HMetNH2 (1.85 g.) by the mixed anhydride method using isobutyl chloroformate gave BocDLeu-MetNH2 in 47% yield. De-t-butoxycarbonylation of BocDLeu-MetNH2 (1.70 g.) using hydrogen chloride in acetic acid gave HDLeu-MetNH2 in 78% yield. Condensation of BocGlyOSu (1.8 g.) and HDLeu-MetNH2 (1.0 g.) by the activated ester method gave BocGly-DLeu-MetNH2 in 95% yield. De-t-butoxycarbonylation of BocGly-DLeu-MetNH2 (1.35 g.) using hydrogen chloride in acetic acid gave HGly-DLeu-MetNH2 in 55% yield.