Bioinspired Synthesis of Spirochensilide A from Lanosterol
Xianwen Long, Jun Li, Feng Gao, Hai Wu, Jun Deng
Abstract
A bioinspired synthesis of spirochensilide A from commercially available lanosterol is reported. The synthesis features a directed C-H oxidation, a Wagner-Meerwein-type double methyl migration, a Meinwald rearrangement, and a double-bond isomerization/spiroketal formation cascade. The proposed biosynthetic speculation was modified by this synthetic sequence, which also served as a platform for the synthesis of other lanostanes with migrating methyl groups.
Topics & Concepts
ChemistryLanosterolStereochemistryBiochemistryCholesterolSterolNatural product bioactivities and synthesisPlant biochemistry and biosynthesisPhytochemical compounds biological activities