Divergent and Expeditious Access to Fused Skeletons Inspired by Indole Alkaloids and Transtaganolides
摘要:
We report the development of a divergent synthetic process entailing four-step access to the elaborate fused skeletons reminiscent of aspidophytines and transtaganolides. A variety of branched precursors were synthesized on the basis of Ugl condensations and installation of diazoimide and subjected to rhodium-catalyzed tandem reactions. Switching of cyclization modes was demonstrated by the choice of the amine building blocks installed at site C.
Divergent and Expeditious Access to Fused Skeletons Inspired by Indole Alkaloids and Transtaganolides
摘要:
We report the development of a divergent synthetic process entailing four-step access to the elaborate fused skeletons reminiscent of aspidophytines and transtaganolides. A variety of branched precursors were synthesized on the basis of Ugl condensations and installation of diazoimide and subjected to rhodium-catalyzed tandem reactions. Switching of cyclization modes was demonstrated by the choice of the amine building blocks installed at site C.