Intramolecular Azide−Alkyne Cycloaddition for the Fast Assembly of Structurally Diverse, Tricyclic 1,2,3-Triazoles
摘要:
The synthesis of novel tricyclic 1,2,3-triazoles starting from cyclic epoxides via the sequential azidolysis, propargylation and 1,3-dipolar cycloaddition is described. Derivatization by N-arylation reaction and the synthesis of enantiomerically pure compounds is also reported. Some of these compounds exhibit significant affinity for the sigma-1 receptor.
The development of the stereoselective synthesis of cis-(S,R)-3-amino-4-fluoro-1-methylpyrrolidine is described starting from chiral, non-racemic 1-[(3S,4S)-3-azido-4-hydroxypyrrolidin-1-yl]-2,2,2-trifluoroethan-1-one. Two sets of deoxyfluorination conditions are developed for achieving inversion of the chiral center with high or complete stereoselectivity.