Chemical Constituents of Ethyl Acetate Extract Part of Stelmatocrypton khasianum

Objective:To study on chemical constituents of the ethyl acetate extract part of Stelmatocrypton khasianum.Method:Ethyl acetate extract part were isolated and pured by silica gel column chromatography,MCI and Sephadex LH-20,Their chemical structures were elucidated by spectral data analysis(1H-NMR and13C-NMR).Result:Five compounds were isolated from the ethyl acetate extract part,they were identified as syringaresinol(Ⅰ),diasyringaresinol(Ⅱ),episyringaresinol(Ⅲ),justiciresinol(Ⅳ),threo-4′,4″,7″,9″-tetrahydroxy-3,3′,3″,5-tetramethoxy-4,8″-oxy-7,9′∶ 7′,9-diepoxylignan(Ⅴ).Conclusion:Five kinds of compounds were isolated from S.khasianum for the first time.