From rastevione (1), a secondary metabolite obtained by direct crystallization of the hexane refluxes of the roots of the Stevia serrata Cav., 2,2'-dichlorolongipiantriolone (9) was prepared. From compound 9 the series of ...

The tricyclic sesquiterpene (1R,3R,4S,5S,7S,8S,9S,10R,11R)-7,8-diangeloyloxylongipinan-1,9-diol, or rasteviol (10), underwent multiple Wagner-Meerwein molecular rearrangements and several hydride shifts when treated with ...

The halogenated derivative 34 is obtained by chlorination reaction of longipinantriolone 11 using NaOCl in basic medium. Oxidative treatment of the triol 11 with HIO4 in methanol results in the formation of acetal hemiacetal ...

From Rastevione (1), a major metabolite obtained in the form of crystals from the hexane extract of the roots of Stevia serrata Cav. derivatives 2, 6 and 8 were prepared, which were used as starting material for the ...

The genus Stevia is one of the most recognized of the Eupatorieae tribe, natural products with different structures can be isolated from its distinct species, some compounds show important biological activity and other are ...