A Concise Semisynthesis of Hederagonic Acid: C-H Activation in Natural Product Synthesis

by Christian Knittl-Frank

Overview

Christian Knittl-Frank reports on the development of a novel synthetic route to the naturally occurring polyhydroxylated oleanane, hederagonic acid. Polyhydroxylated oleananes are a vast family of naturally occurring triterpenoids with versatile biological activities. A low commercial availability combined with high prices make these molecules interesting targets in natural product synthesis. The developed synthetic approach starts from oleanolic acid, a cheap material that is commercially available in bulk quantities. It features several multi-step one-pot reactions, allowing a minimization of the number of steps and reducing the preparative effort. Importantly, catalytic C–H functionalization was achieved at unusually low temperatures. Hederagonic acid was thus prepared in as little as four steps, resulting in the shortest semisynthesis of this oleanane to date.

The Author

Christian Knittl-Frank is currently pursuing his PhD studies, focusing on natural product synthesis and synthetic methodology, at the Department of Organic Chemistry, University of Vienna, Austria. He is part of the MolTag doctoral program that aims to development new molecular drugs targeting ion channels.

Product Details

ISBN-13:	9783658300104
Publisher:	Springer Fachmedien Wiesbaden
Publication date:	04/07/2020
Series:	BestMasters
Edition description:	1st ed. 2020
Pages:	60
Product dimensions:	5.83(w) x 8.27(h) x (d)

About the Author

Christian Knittl-Frank is currently pursuing his PhD studies, focusing on natural product synthesis and synthetic methodology, at the Department of Organic Chemistry, University of Vienna, Austria. He is part of the MolTag doctoral program that aims to development new molecular drugs targeting ion channels.

Table of Contents

Hederagonic Acid and C−H Activation; Optimization of the Synthetic Sequence.- Final Synthetic Route to Hederagonic Acid.- Experimental Section.