Abstract:Total syntheses of (+)-cinereain and (À )janoxepin, two fungal cyclotripeptides featuring a complex heterocyclic core and interesting phytotoxic and antimalarial activities, have been achieved in a convergent manner. A key step in this synthesis is a one-pot cascade initiated by the cyclocondensation of two fragments-a hindered 2-vinylcyclopropane-1-acyl fluoride and an electron-deficient cyclic amidine-to release a reactive spiro[2-vinylcyclopropane-1,5'-pyrimidine-4',6'dione]. This intermediate underwent a s… Show more
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