A new quinone and a new phenolic glycoside from Thymus quinquecostatus / 中草药

ABSTRACT

Objective: To study the chemical components of Thymus quinquecostatus in order to find new compounds. Methods: The constituents were separated by column chromatographic methods of silica gel, AB-8 resin, Sephadex LH-20 and ODS column. The structures were elucidated by MS and NMR analyses. Results: Two compounds were isolated and identified as 6-hydroxy-11-methyl-12-hydroxymethyl naphtho [2,3-β] furan-1,4-dione (1) and 2-hydroxy-4-isopropyl-5-methylbenzene-O-β-D- glucopyranoside (2). Conclusion: Compounds 1 and 2 are new compounds, named quinquequinone A and quinqueside A, respectively.