InCl3-mediated addition of indole to isatogens: an expeditious synthesis of 13-deoxy-isatisine A

TitleInCl3-mediated addition of indole to isatogens: an expeditious synthesis of 13-deoxy-isatisine A
Publication TypeJournal Article
Year of Publication2012
AuthorsKumar, CVSuneel, Puranik, VG, Ramana, CV
JournalChemistry-A European Journal
Volume18
Issue31
Pagination9601-9611
Date PublishedJUL
ISSN0947-6539
Keywordsindium, indoles, isatogens, Natural products, Total synthesis
Abstract

A strategy directed towards the total synthesis of isatisine A that involves several late-stage metal-catalyzed transformations that address the key carboncarbon and carbonheteroatom bond formations has been developed. As a part of this strategy, methods for the addition of indoles to isatogens that lead selectively to either 2,2-disubstituted N-hydroxyindolin-3-one or 2,2-disubstituted indolin-3-one compounds have been developed by employing InCl3 as a catalyst or as the reagent. The present methods provide the first examples of the additions of indoles to the isatogen nucleus. To demonstrate its viability, the synthesis of 13-deoxy-isatisine A has been completed in ten steps from a known and easily available lactone.

DOI10.1002/chem.201103604
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)5.831
Divison category: 
Center for Material Characterization (CMC)
Organic Chemistry