Chemistry of Natural Compounds

, Volume 2, Issue 5, pp 246–248 | Cite as

A spectroscopic investigation of the phenolcarboxylic acids ofCynara scolymus

  • L. I. Dranik


Spectroscopic investigations in the UV region of the phenolcarboxylic acids that we have isolated from the leaves ofCynara scolymus have been carried out. It has been found that:

1. Free caffeic acid can be distinguished from its esters by the changes in the UV spectra under the influence of sodium ethoxide and sodium acetate.

2. An o-dihydroxy grouping in esters can be detected from the bathochromic shift observed with boric acid in the presence of sodium acetate.

3. An o-dihydroxy grouping can be detected both in esters and in the free acid under the influence of aluminum chloride.


Caffeic Acid Sodium Acetate Aluminum Chloride Carboxy Group Quinic Acid 
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Copyright information

© The Faraday Press, Inc 1968

Authors and Affiliations

  • L. I. Dranik
    • 1
  1. 1.Khar'kov Chemical and Pharmaceutical Scientific Research InstituteUSSR

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