Add time:07/25/2019         Source:sciencedirect.com

The total syntheses of three marine bis-indole alkaloids (1, 2, 4) of the topsentin family together with the synthesis of the unnatural deoxybromotopsentin (33) are described. Key elements include, a 1,2-addition-oxidation sequence to construct the bis-heteroarylketones (18, 19, 29, 30) and a Pd-catalyzed heteroarylation involving the 3-stannylindoles (12, 26)

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