| Literature DB >> 22860227 |
Robert R Knowles1, Joseph Carpenter, Simon B Blakey, Akio Kayano, Ian K Mangion, Christopher J Sinz, David W C Macmillan.
Abstract
A total synthesis of the marine natural product diazonamide A (1) has been accomplished. This work features a highly stereoselective synthesis of the C(10) quaternary center and the central furanoindoline core enabled by an iminium-catalyzed alkylation-cyclization cascade. Additionally, a magnesium-mediated intramolecular macroaldolization and a palladium-catalyzed tandem borylation/annulation were developed to enable the closure of the two 12-membered macrocycles of diazonamide A. This synthesis involves 20 steps in its longest linear sequence and proceeds in 1.8% overall yield.Entities:
Year: 2010 PMID: 22860227 PMCID: PMC3408608 DOI: 10.1039/C0SC00577K
Source DB: PubMed Journal: Chem Sci ISSN: 2041-6520 Impact factor: 9.825