The concise and enantioselective total syntheses of (−)-trigonoliimines A, B, and C are described. Our unified strategy to all three natural products is based on asymmetric oxidation and reorganization of a single bistryptamine, a sequence of transformations with possible biogenetic relevance. We revise the absolute stereochemistry of (−)-trigonoliimines A, B, and C.National Institute of General Medical Sciences (U.S.) (GM074825)National Science Foundation (U.S.) (CHE-0946721)Amgen Inc.DuPont (Firm
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