作者:Olivier Provot、Jean-Pierre Célérier、GÉRard Lhommet
DOI:10.1002/jhet.5570350219
日期:1998.3
Cis-3 and 3,5-substituted pyrrolizidines can be prepared from β-enaminolactones. Substituted pyrrolidinoketones lead to these compounds by an amino reductive annelation with a low diastereomeric excess, but a best access to these azabicycles consists in preparing cis-2,5-disubstituted pyrrolidines which are then transformed into the expected heterocycles.
顺式-3和3,5-取代的吡咯烷核苷可以由β-烯胺内酯制备。取代的吡咯烷酮通过具有低非对映异构体过量的氨基还原脱环作用而产生这些化合物,但是获得这些氮杂双环的最佳途径是制备顺式-2,5-二取代的吡咯烷,然后将其转化为预期的杂环。