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Robert E. Ziegler, Shin-Jowl Tan, Prof. Dr. Toh-Seok Kam and Prof. Dr. John A. Porco Jr. Development of an Alkaloid–Pyrone Annulation: Synthesis of Pleiomaltinine Angewandte Chemie International Edition 51

Article first published online: 15 AUG 2012 | DOI: 10.1002/anie.201204093

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Odd Couple: A method for the synthesis of alkaloid-pyrones using a novel pyrone annulation of β-carbolines and indoles with 3-siloxy-4-pyrones is reported. The approach has enabled synthesis of the unusual alkaloid-pyrone pleiomaltinine from the plant-derived indole-alkaloid pleiocarpamine (see Scheme; TBS= tert-butyldimethylsilyl).

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