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• W2950338790 abstract "A short enantioselective synthesis of barrenazines A and B is described. Barrenazines A and B are prepared following a common synthetic route in nine steps (19% overall yield) and eight steps (21% overall yield), respectively, from readily available 4-methoxy-3-(triisopropylsilyl)pyridine. The synthesis relies on a highly diastereoselective nucleophilic addition of a Grignard reagent to a chiral acylpyridinium salt, a radical azidation of a silyl enol ether and the assembly of the pyrazine ring by reductive dimerization of a functionalized 5-azidopiperidin-4-one." @default.
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• W2950338790 date "2007-11-01" @default.
• W2950338790 modified "2023-10-10" @default.
• W2950338790 title "Enantioselective synthesis of (−)-barrenazines A and B" @default.
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• W2950338790 doi "https://doi.org/10.1016/j.tetlet.2007.09.145" @default.
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