A Modular Approach to the Asymmetric Synthesis of Cytisine
作者:Felix R. Struth、Christoph Hirschhäuser
DOI:10.1002/ejoc.201501435
日期:2016.2
The asymmetric synthesis of (+)- and (–)-cytisine starts with Matteson homologations for the construction of a chiral C3-building block. Conversion of the C3-building block into a dihydropyridone is achieved by straightforward functional group interconversions and ring closing metathesis. After bromination, this central building block was diastereospecifically converted into cytisine in five steps