Selectivity in reduction of natural furanoheliangolides with Stryker's reagent
作者:Daiane C. Sass、Vladimir C. G. Heleno、Gustavo O. Morais、João L. C. Lopes、Norberto P. Lopes、Mauricio G. Constantino
DOI:10.1039/c1ob05734k
日期:——
Reduction of the natural sesquiterpene lactones furanoheliangolides with Stryker's reagent is an effective process for producing eremantholides through a biomimetic pathway. Other reduction products are also formed. Oxygenated functions at C-15 of the furanoheliangolide produce an increase in the velocities of the reactions and reduce the chemoselectivity of the reagent.
The solvent has a significant influence in the rate of reactions promoted by Stryker's reagent The reactions performed in THF were, in most cases, faster than in toluene.
One-step biomimetic conversion of a furanoheliangolide into an eremantholide using Stryker’s reagent
The conversion of a furanoheliangolide structure (15-deoxygoyazensolide) into an eremantholide one (eremantholide C) was achieved by tandem hydride conjugate addition-intramolecular carbanion addition using Stryker's reagent. (c) 2008 Elsevier Ltd. All rights reserved.
Identification of a Covalent Importin-5 Inhibitor, Goyazensolide, from a Collective Synthesis of Furanoheliangolides
Sesquiterpenes are a rich source of covalentinhibitors with a long history in traditional medicine and include several important therapeutics and tool compounds. Herein, we report the total synthesis of 16 sesquiterpene lactones via a build/couple/pair strategy, including goyasensolide. Using an alkyne-tagged cellular probe and proteomics analysis, we discovered that goyazensolide selectively targets