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. ... Asymmetric aza-Claisen rearrangement: Synthesis of (+)-dihydropallescensin-2 [(+)-penlanpallescensin]. ... Synthetic confirmation of the C(1′)-(S)-configuration of (+)-dihydropallescensin-2 (1) is reported, the key reaction being a chiron-mediated ...