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A natural product-inspired synthesis of a compound collection embodying the tetrahydroindolo[2,3-a]quinolizine scaffold was established with a five step synthesis route. An imino-Diels–Alder reaction between Danishefsky’s diene and the iminoesters derived from tryptamines was used as a key reaction. Reductive amination of the ketone function and amide synthesis with the carboxylic acid derived from...
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