Discovery and Total Synthesis of a Bis(cyclotryptamine) Alkaloid Bearing the Elusive Piperidinoindoline ScaffoldClick to copy article linkArticle link copied!
- Jordan J. DotsonJordan J. DotsonDepartment of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United StatesMore by Jordan J. Dotson
- J. Logan BachmanJ. Logan BachmanDepartment of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United StatesMore by J. Logan Bachman
- Miguel A. Garcia-Garibay*Miguel A. Garcia-Garibay*[email protected]Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United StatesMore by Miguel A. Garcia-Garibay
- Neil K. Garg*Neil K. Garg*[email protected]Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United StatesMore by Neil K. Garg
Abstract

Bis(cyclotryptamine) alkaloids have been popular topics of study for many decades. Five possible scaffolds for bis(cyclotryptamine) alkaloids were originally postulated in the 1950s, but only four of these scaffolds have been observed in natural products to date. We describe synthetic access to the elusive fifth scaffold, the piperidinoindoline, through syntheses of compounds now termed “dihydropsychotriadine” and “psychotriadine”. The latter of these compounds was subsequently identified in extracts of the flower Psychotria colorata. Our synthetic route features a stereospecific solid-state photodecarbonylation reaction to introduce the key vicinal quaternary stereocenters.
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