Open Analogues of Arcyriaflavin A. Synthesis through Diels−Alder Reaction between Maleimides and 1-Aryl-3-<i>tert</i>-butyldimethylsiloxy-1,3-butadienes
作者:Marta Adeva、Heidi Sahagún、Esther Caballero、Rafael Peláez-Lamamié de Clairac、Manuel Medarde、Fernando Tomé
DOI:10.1021/jo991815x
日期:2000.6.1
The preparation of a range of open analogues of arcyriaflavin A is described. The synthetic approach is based on the use of perhydroisoindole-1,3,5-triones as key intermediates, which were obtained via Diels-Alder methodology using 1-aryl-3-siloxy-1,3-butadienes as starting materials. Fischer indolization and aromatization processes afforded different methoxy-substituted arylpyrrolocarbazoles. The stereochemistry and conformation of the Diels-Alder products and the regiochemistry of the indolization reactions are supported by NMR and molecular modeling studies.