Phenylpropanoids from subterranean organs of Inula helenium
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Inula helenium L. is a plant species of the family Asteraceae. Its rhizomes and roots are widely used in medical practice. Glucofructans , sesquiterpenes , thymol derivatives , and dammaradienyl acetate  were observed earlier in roots of I. helenium. No information is available on phenolic compounds from roots of I. helenium. Preliminary studies showed that subterranean organs of I. helenium contained phenylpropanoids, the chemical study of which is the focus of the present work.
Subterranean organs of I. helenium were collected at the experimental plantation in the vicinity of Goryachinsk (Pribaikal Region, Republic of Buryatiya, 30 Aug., 2009, 52°48' 98'' N, 108°29' 01'' E). The species was determined by Dr. T. A. Aseeva (IGEB, SB, RAS).
Extraction and Fractionation. Ground raw material (1.5 kg) was extracted (5×) with EtOH (60 %, 1:10, 2 h) on a boiling-water bath. The combined EtOH extracts were concentrated to a watery residue that was extracted with C6H14, CHCl3,...
KeywordsZnSe EtOAc Caffeic Acid HCOOH BuOH
The work was supported financially by SB, RAS Project No. VI.52.1.3.
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