A three-step synthesis of caulersin (3) from indole-2-acetic acid methyl ester and indole-2-carbonyl chloride is described. As the spectral data of the synthetic sample differed from those reported for the natural product, the structure was determined by X-ray crystallography. (C) 2004 Elsevier Ltd. All rights reserved.
The First Synthesis of the Bis(indole) Marine Alkaloid Caulersin
作者:Pilar M. Fresneda、Pedro Molina、María Angeles Saez
DOI:10.1055/s-1999-2903
日期:——
The first synthesis (seven steps) of the bis(indole) marine alkaloid caulersin is described. Construction of the central seven-membered ring is based on a Michael-type addition of the appropriate 2,3′-bis(indolyl)ketone to methylvinylketone followed by intramolecular nucleophilic substitution of the resulting 3-oxoalkylated product.
A three-step synthesis of caulersin (3) from indole-2-acetic acid methyl ester and indole-2-carbonyl chloride is described. As the spectral data of the synthetic sample differed from those reported for the natural product, the structure was determined by X-ray crystallography. (C) 2004 Elsevier Ltd. All rights reserved.