Stereo-divergent asymmetric total synthesis of avenaciolide and isoavenaciolide. Complete reversal of stereoselectivity in reduction of 2-vinyl aldols with / without trimethylsilyl directing group
Stereo-divergent: asymmetric total synthesis of avenaciolide and isoavenaciolide was achieved via 1,2-rearrangement of chiral epoxyalcohol derivatives, where complete reversal of stereoselectivity with / without the TMS-directing group in the reduction of 2-vinyl aldols was used as the key branching point.