Enantioselective, Organocatalyzed, Intramolecular Aldol Lactonizations with Keto Acids Leading to Bi- and Tricyclic β-Lactones and Topology-Morphing Transformations
作者:Carolyn A. Leverett、Vikram C. Purohit、Daniel Romo
DOI:10.1002/anie.201004671
日期:2010.12.3
Quickly emerging complexity characterizes the asymmetric, nucleophile‐catalyzed aldollactonization (NCAL) process with ketoacid substrates and subsequent topology‐altering reactions. The utility of chiral cyclic isothiourea catalysts as nucleophilic promoters (Lewis bases) for desymmetrization reactions through scaleable NCAL processes is demonstrated (see picture; HBTM=homobenzotetramisole).