1002754-01-9Relevant academic research and scientific papers
De novo asymmetric syntheses of d-, l- and 8-epi-d-swainsonine
Guo, Haibing,O'Doherty, George A.
, p. 304 - 313 (2008/04/01)
A highly enantioselective and stereocontrolled approach to d-, l- and 8-epi-d-swainsonine has been developed from achiral furan and γ-butyrolactone. A one-pot hydrogenolysis of both azide and benzyl ether followed by an intramolecular reductive amination has been employed as key step to establish the indolizidine ring system. The absolute stereochemistry was installed by the Noyori reduction and the relative stereochemistry by the use of several highly diastereoselective palladium-catalyzed glycosylation, Luche reduction, dihydroxylation, and palladium-catalyzed azide allylation reactions. This practical approach provide multigram quantities of indolizidine natural product d-swainsonine in 13 steps and 25% overall yield.
De novo asymmetric synthesis of D- and L-swainsonine
Guo, Haibing,O'Doherty, George A.
, p. 1609 - 1612 (2007/10/03)
The enantioselective syntheses of both enantiomers of the indolizidine natural product swainsonine have been achieved in 13 steps from furan. The indolizidine ring system is installed by a one-pot hydrogenolysis of both an azide and an O-Bn group along with an intramolecular reductive amination reaction. The asymmetry of swainsonine was introduced by Noyori reduction of an acylfuran. This route relies upon an Achmatowicz rearrangement, a diastereoselective palladium-catalyzed glycosylation, Luche reduction, and a dihydroxylation reaction.
