A first total synthesis of vialinin B, a powerful inhibitor (IC(50) 20 pM) of TNF-alpha production, is described. The key reactions include a double Suzuki-Miyaura coupling of electron-rich aryl bromide with a couple of phenylboronic acids, a Cu-mediated Ullmann reaction, and a LHMDS-promoted phenylacetylation. This synthesis proceeded in 11 steps with 18% overall yield from a known sesamol derivative.
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| http://dx.doi.org/10.1021/ol9020833 | DOI Listing |
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