1. What Is the Structure of the Antitubercular Natural Product Eucapsitrione?
- Author
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Pullella, Glenn A., Wild, Duncan A., Nealon, Gareth L., Elyashberg, Mikhail, and Piggott, Matthew J.
- Abstract
1,5,7-Trihydroxy-6H-indeno[1,2-b]anthracene-6,11,13-trione (1), proposed to be the antitubercular natural product eucapsitrione, has been synthesized in 43% overall yield and six steps, including a key Suzuki-Miyaura biaryl coupling and a directed remote metalation (DReM)-initiated cyclization. The physical and spectroscopic properties of 1 do not match the data reported for the natural product. At this time there is insufficient information available to enable a structure reassignment. During the optimization of the Suzuki-Miyaura coupling, an unprecedented biaryl coupling ortho to the borono group was observed. The scope of this unusual reaction has been investigated. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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