Double Asymmetric Induction in Organocatalyzed Aldol Reactions: Total Synthesis of (+)-2-<i>epi</i>-Hyacinthacine A<sub>2</sub>and (-)-3-<i>epi</i>-Hyacinthacine A<sub>1</sub>
作者:Jasna Marjanovic、Vladimir Divjakovic、Radomir Matovic、Zorana Ferjancic、Radomir N. Saicic
DOI:10.1002/ejoc.201300716
日期:2013.9
which relies on an organocatalyzed aldol addition, is described. The aldol addition of dioxanone to an α-N-carbobenzyloxy-substituted chiral aldehyde, promoted by both (R)- and (S)-proline, proceeds in reasonable yields with acceptable diastereomeric ratios. The success of the reaction may be due to the use of an acyclicaldehyde acceptor, which allows reagent control of the stereochemical outcome of