Robuta

https://pubs.rsc.org/en/content/articlelanding/2013/cc/c3cc38783f Enantioselective total synthesis of virosaine A and bubbialidine - Chemical Communications (RSC... The first enantioselective total syntheses of virosaine A and bubbialidine are described. Key transformations include the formation of a tetracyclic... totalsynthesis