Studies toward (−)-Gymnodimine: Concise Routes to the Spirocyclic and Tetrahydrofuran Moieties
作者:Ju Yang、Stephen T. Cohn、Daniel Romo
DOI:10.1021/ol005510c
日期:2000.3.1
(-)-Gymnodimine is a member of a unique class of potent marine toxins possessing imines within a spirocylic array. Herein we report the synthesis of the tetrahydrofuran fragment and a strategy toward the spirocyclic imine fragment of this family of toxins. Key reactions include an asymmetric anti-aldol reaction to set the stereochemistry of the tetrahydrofuran and a formal, intermolecular Diels-Alder reaction involving an alpha-methylene-delta-lactam and a dienyne.