Chemical constituents from dried aerial parts of eclipta prostrata / 中草药·英文版

ABSTRACT

Objective: To study the constituents in the dried aerial parts of Eclipta prostrata. Methods: The constituents were isolated and purified by column chromatography and their structures were elucidated by spectroscopic methods (1D, 2D NMR, UV, IR, and HRESI-TOF-MS) and chemical analyses. Results: Eight compounds were isolated and identified as 7-O-methylorobol-4'-O-β-D-glucopyranoside (1), 3'-hydroxybiochanin A (2), echinocystic acid 28-O-β-D-glucopyranoside (3), ecliptasaponin A (4), eclalbasaponin I (5), eclalbasaponin IV (6), echinocystic acid (7), and 3-oxo-16α-hydroxy-olean-12-en-28-oic acid (8). Conclusion: Compound 1 is a new compound and compound 3 is obtained from this genus for the first time. © 2013 Tianjin Press of Chinese Herbal Medicines.