Structure Determination of Compounds from the Stem of Equisetum Ramosissmum

This study was carried out to isolate the major constituents of stem of Equisetum Ramosissmum. The dimethyl ether extract was isolated by column chromatography to give one pure compound. The compound was identified as Isophthalic acid 1-(5- methyl-hexyl) ester 3-pentyl ester.  The structures of the compounds were elucidated by means of 1H-NMR, 13C-NMR and DEPT-135 spectral data and comparison with literature reports.