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Updated: Aug 21, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
Cyclopentanoid cyanohydrin glucosides and amides of Lindackeria dentata
Jerzy W Jaroszewski1, Patrick Ekpe, Matthias Witt
1Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Copenhagen, Denmark. jj@dfuni.dk
Abstract:
A mixture of cyanogenic glucosides epivolkenin and taraktophyllin, 1,4-dihydroxy-2-cyclopentenecarboxamide, and uridine were isolated from leaves of Lindackeria dentata (Flacourtiaceae). Another cyclopentanoid amide, (1 R,4 S,5 R)-1,4,5-trihydroxy-2-cyclopentenecarboxamide, was synthesized in two steps from gynocardin, and shown to have the same relative configuration as a partially identified amide previously isolated from L. dentata bark.
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Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
