Formation of the C3-C4 Unsaturated Framework of Cribrostatin 4 via DEAD-Mediated Oxidation of an Allylic Tertiary Amine
作者:Robert M. Williams、Guillaume Vincent、Yuyin Chen、Jonathan W. Lane
DOI:10.3987/com-06-s(k)25
日期:——
The formal synthesis of the tetrahydroisoquinoline alkaloid cribrostatin 4 (1) is described. The synthesis features as a key step a DEAD-mediated oxidation of an allylic tertiary amine to an iminium ion immediately followed by a Pictet-Spengler cyclization to form the pentacyclic skeleton of cribrostatin 4.