Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A new approach to δ-lactones, related to the Prelog-Djerassi lactone. ... The reductive rearrangement of 2-ethoxy-5-(2-alkenyl)-2H-tetrahydropyrane systems, in the presence of AlBu 1 3 , was used as the key-step in the synthesis of Prelog-Djerassi related lactones.
