InCl3-mediated addition of indole to isatogens: an expeditious synthesis of 13-deoxy-isatisine A
Title | InCl3-mediated addition of indole to isatogens: an expeditious synthesis of 13-deoxy-isatisine A |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Kumar, CVSuneel, Puranik, VG, Ramana, CV |
Journal | Chemistry-A European Journal |
Volume | 18 |
Issue | 31 |
Pagination | 9601-9611 |
Date Published | JUL |
ISSN | 0947-6539 |
Keywords | indium, 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. |
DOI | 10.1002/chem.201103604 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 5.831 |