Characteristic features of the NMR spectra of hydroxyindole alkaloids of the epiallo and allo series
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On the basis of an analysis and generalization of the characteristics of the NMR spectra of the pentacyclic hydroxyindole alkaloids of the epiallo and allo series, criteria have been found for distinguishing between the CSs and SSCCs of a number of protons which permit unambiguous stereochemical identification on such alkaloids.
KeywordsAlkaloid Lactam Unshared Electron Pair Alicyclic Ring Hydroxyindole Alkaloid
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