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A New Coumestan Glucoside from Eclipta prostrata

  • Seo, Young Ju (College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea) ;
  • Kil, Hyun Woo (College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea) ;
  • Rho, Taewoong (College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea) ;
  • Yoon, Kee Dong (College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea)
  • Received : 2020.04.18
  • Accepted : 2020.11.20
  • Published : 2020.12.31

Abstract

Eclipta prostrata is an annual herb, belonging to Asteraceae family, and has been traditionally used to improve immunity and treat hepatitis and bacterial disease in Korea. In this study, a new coumestan glucoside (1) along with ten known compounds (2 - 11) was isolated from E. prostrata. The chemical structures of isolates were elucidated to be wedelolactone-9-O-β-D-glucopyranoside (1), wedelolactone (2), demethylwedelolactone (3), apigenin (4), apigenin-7-sulfate (5), luteolin (6), luteolin-7-sulfate (7), luteolin-7-O-β-D-glucopyranoside (8), pratensein-7-O-β-D-glucopyranoside (9), 3,4-di-O-caffeoylquinic acid (10) and 3,5-di-O-caffeoylquinic acid (11) based on the spectroscopic evidence.

Keywords

References

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