Dearomatization of Indole via Intramolecular [3 + 2] Cycloaddition: Access to the Pentacyclic Skeleton of Strychons Alkaloids.
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DOI: 10.1021/acs.orglett.8b01720
Abstract: An efficient method to build various multisubstituted polycyclic indoline-annulated normal to medium-size rings through dearomatization of indole via a tandem 1,2-acyloxy migration/intramolecular [3 + 2] cycloaddition process is described. The pentacyclic skeleton of strychnine could… read more here.
Keywords: cycloaddition; indole via; intramolecular cycloaddition; dearomatization indole ... See more keywords