Elaborate fragments of the proposed stereostructure of the complex polyketide antibiotic vancoresmycin have been synthesized in a stereoselective fashion based on a modular and convergent approach. Significant nuclear magnetic resonance differences in one of these subunits compared with the natural product question the proposed stereoconfiguration. Consequently, an extensive bioinformatics analysis
A Dötz benzannulation route to the enantioselective synthesis of (−)- and (+)-juglomycin A
作者:Rodney A. Fernandes、Vijay P. Chavan
DOI:10.1016/j.tetasy.2011.07.018
日期:2011.6
Two synthetic routes based on a Dotz benzannulation toward the enantioselective synthesis of naphthoquinone antibiotics (-)- and (+)-juglomycin A are described. The stereoinducing step is based on asymmetric dihydroxylation. The syntheses are completed in seven to eight steps from Fischer carbene 12. (C) 2011 Elsevier Ltd. All rights reserved.