Phosphoric Acid Catalyzed 1,2-Rearrangements of 3-Hydroxyindolenines to Indoxyls and 2-Oxindoles: Reagent-Controlled Regioselectivity Enabled by Dual Activation
作者:Eva Schendera、Stephanie Lerch、Thorsten von Drathen、Lisa-Natascha Unkel、Malte Brasholz
DOI:10.1002/ejoc.201700085
日期:2017.6.16
A common synthetic route to indoxyl and 2-oxindole alkaloids utilizes the oxidation of indoles to 3-hydroxyindolenines, followed by acid-mediated 1,2-rearrangement. However, controlling the regioselectivity is often challenging and there is an ongoing need for new reaction conditions allowing to steer product selectivity. We report herein that phosphoric acids are ideal organocatalysts for the highly
This disclosure relates to substituted urea eIF2α kinase activators including methods of making and using the same. For example, such activators can include cycloalkyl aryl ureas, which activate at least one eIF2α kinase. These compounds may be useful for treatment of diseases such as, for example, cancer, hemolytic anemia not caused by infectious agents, Wolcott-Rallison syndrome, neurodegenerative disease, tuberous sclerosis complex, fragile-X syndrome, autism spectrum disorder, and ribosomal defect disease.