The first total synthesis of pandamarine, an alkaloid isolated from Pandanus amaryllifolius is reported. The key step of this extremely short (six steps in total) and protecting group-free synthesis is a highly efficient cascade reaction sequence initiated by the photooxidation of an easily accessible and symmetric difuran precursor.
作者:Kang Yee Seah、Sarah J. Macnaughton、Jonathan W. P. Dallimore、Jeremy Robertson
DOI:10.1021/ol4036424
日期:2014.2.7
The first totalsynthesis of pandamarilactone-1, an alkaloid of Pandanus amaryllifolius, is reported. The nine-step synthesis features furan oxidation with singletoxygen and then spiro-N,O-acetalization and elimination to generate the natural product and further Pandanus alkaloids, pandamarilactonines A–D.