Aminoalkohole, 2. Mitt.: Ein Verfahren zur Herstellung enantiomerenreiner pharmakologisch aktiver ?-Aminoalkohole
摘要:
A synthesis of beta-aminoalcohols is described starting from racemic or enantiomerically pure alpha-hydroxynitriles which were O-protected using enantiomerically pure acetal type protective groups. Reduction with lithium aluminium hydride yielded O-protected beta-aminoalcohols. Whenever diastereomeric O-protected cyanohydrins could not be separated, the mixture was reduced and the resulting O-protected aminoalcohols were separated. Removal of the protective group using hydrogen chloride and methanol yielded enantiomerically pure beta-aminoalcohols or their corresponding hydrochlorides.
Aminoalkohole, 2. Mitt.: Ein Verfahren zur Herstellung enantiomerenreiner pharmakologisch aktiver ?-Aminoalkohole
摘要:
A synthesis of beta-aminoalcohols is described starting from racemic or enantiomerically pure alpha-hydroxynitriles which were O-protected using enantiomerically pure acetal type protective groups. Reduction with lithium aluminium hydride yielded O-protected beta-aminoalcohols. Whenever diastereomeric O-protected cyanohydrins could not be separated, the mixture was reduced and the resulting O-protected aminoalcohols were separated. Removal of the protective group using hydrogen chloride and methanol yielded enantiomerically pure beta-aminoalcohols or their corresponding hydrochlorides.
Aminoalkohole, 3. Mitt. Ein Verfahren zur Herstellung von enantiomerenreinen pharmakologisch aktiven N-substituierten ?-Aminoalkoholen
作者:C. R. Noe、M. Knollm�ller、P. G�rtner、W. Fleischhacker、E. Katikarides
DOI:10.1007/bf00807429
日期:1995.5
A synthesis of N-substituted beta-aminoalcohols is described starting from enantiomerically pure O-MBF- or O-MBE-protected beta-aminoalcohols which can be prepared via LiAlH4 reduction of O-protected cyanohydrines.
Aminoalkohole, 2. Mitt.: Ein Verfahren zur Herstellung enantiomerenreiner pharmakologisch aktiver ?-Aminoalkohole
作者:C. R. Noe、M. Knollm�ller、P. G�rtner、W. Fleischhacker、E. Katikarides
DOI:10.1007/bf00813211
日期:1995.4
A synthesis of beta-aminoalcohols is described starting from racemic or enantiomerically pure alpha-hydroxynitriles which were O-protected using enantiomerically pure acetal type protective groups. Reduction with lithium aluminium hydride yielded O-protected beta-aminoalcohols. Whenever diastereomeric O-protected cyanohydrins could not be separated, the mixture was reduced and the resulting O-protected aminoalcohols were separated. Removal of the protective group using hydrogen chloride and methanol yielded enantiomerically pure beta-aminoalcohols or their corresponding hydrochlorides.