An intramolecular 1,3-dipolar cycloaddition has efficiently constructed the A-ring portions of the cylindrospermopsin alkaloids. A nitro-aldol addition of an elaborated nitroalkane to a pyrimidine aldehyde followed by an intramolecular reductive guanidinylation has enabled the syntheses of all three alkaloids in this family in 18-19 steps. We report the first asymmetric synthesis of cylindrospermopsin, unambiguously assigning its absolute configuration. (c) 2006 Elsevier Ltd. All rights reserved.
A Concise Asymmetric Synthesis of the Marine Hepatotoxin 7-Epicylindrospermopsin
作者:Ryan E. Looper、Robert M. Williams
DOI:10.1002/anie.200454208
日期:2004.5.24
Synthesis of the Putative Structure of 7-Deoxycylindrospermopsin: C7 Oxygenation Is Not Required for the Inhibition of Protein Synthesis
作者:Ryan E. Looper、Maria T. C. Runnegar、Robert M. Williams
DOI:10.1002/anie.200500520
日期:2005.6.20
Syntheses of the cylindrospermopsin alkaloids
作者:Ryan E. Looper、Maria T.C. Runnegar、Robert M. Williams
DOI:10.1016/j.tet.2006.02.044
日期:2006.5
An intramolecular 1,3-dipolar cycloaddition has efficiently constructed the A-ring portions of the cylindrospermopsin alkaloids. A nitro-aldol addition of an elaborated nitroalkane to a pyrimidine aldehyde followed by an intramolecular reductive guanidinylation has enabled the syntheses of all three alkaloids in this family in 18-19 steps. We report the first asymmetric synthesis of cylindrospermopsin, unambiguously assigning its absolute configuration. (c) 2006 Elsevier Ltd. All rights reserved.