HPTLC detection, extraction - isolation optimization and characterization of in-house isolated Wedelolactone from the whole plant extract of Eclipta prostrata (L.) L. for the development of efficacious formulations

Nat Prod Res. 2024 Dec 3:1-9. doi: 10.1080/14786419.2024.2431128. Online ahead of print.

Abstract

In present study Wedelolactone (WL) was identified from successive extracts of whole plant Eclipta prostrata (L.) L. using HPTLC, optimised extraction/isolation method and confirmed WL structure.Extraction, isolation andidentification was performed though cold-percolation method, column chromatography and TLC respectively.WL was found abundantly in ethyl acetate and ethanol extracts at UV254 & 366 nm, respectively at RF0.42 by using toluene:ethyl acetate: formic acid (6:3.5:0.5, v/v/v). In the Method IV got a pure pale green crystals (0.138 g, % yield of 0.23) was adopted. Isolated compound verified by TLC and the structure confirmed by various spectroscopic tools. The study proposed high efficiency extraction-isolation method for WL, which could enhance the efficacy for identification of E. prostrata, studying such coumestan in extracts and herbal formulations. Study potentially aiding in developing advance anti-cancer and hepatoprotectivedosages and quality control.

Keywords: Eclipta prostrata (L.) L; HPTLC; anticancer andhepatoprotective; ayurvedic dosage; coumestan; extraction and isolation; wedelolactone.