[EN] METHOD FOR PREPARATION OF INTERMEDIATES USEFUL FOR PREPARATION OF THAPSIGARGIN AND NORTRILOBOLIDE [FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES UTILES POUR LA PRÉPARATION DE THAPSIGARGINE ET DE NORTRILOBOLIDE
[EN] METHOD FOR PREPARATION OF INTERMEDIATES USEFUL FOR PREPARATION OF THAPSIGARGIN AND NORTRILOBOLIDE [FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES UTILES POUR LA PRÉPARATION DE THAPSIGARGINE ET DE NORTRILOBOLIDE
Toward the Synthesis of Thapsigargin: Enantioselective Synthesis of 7,11-Dihydroxyguaianolides
作者:Francisco L. Manzano、Francisco M. Guerra、F. Javier Moreno-Dorado、Zacarías D. Jorge、Guillermo M. Massanet
DOI:10.1021/ol061024z
日期:2006.6.1
[reaction: see text] The enantioselective synthesis of a 7,11-dihydroxyguaianolide bearing the stereochemistry present in thapsigargin, a potent and selective inhibitor of the Ca(2+) SERCA-ATPase pumps, is described. Starting from (+)-dihydrocarvone, the synthesis presents two key steps. The first one involves the photochemical rearrangement of a gamma,delta-unsaturated ketone eudesmane into the corresponding
Acyloxylation of Cyclic Enones: Synthesis of Densely Oxygenated Guaianolides
作者:Rubén Marín-Barrios、Ana Leticia García-Cabeza、F. Javier Moreno-Dorado、Francisco M. Guerra、Guillermo M. Massanet
DOI:10.1021/jo500915r
日期:2014.7.18
The alpha'-acyloxylation of cyclic enones with linear carboxylic acids is described. The reaction is promoted by KMnO4 in the presence of a carboxylic acid and its corresponding carboxylic anhydride. The optimization of the reaction has been carried out using the statistical methodology known as design of experiments. The optimized reaction conditions have been evaluated in terms of substrate scope and compatibility with different functional groups. The methodology has been applied to the synthesis of densely oxygenated guaianes and guaianolides.