Studies On Chemical Constituents Of Myricaria Alopecuroides Schrenk

Object To screening the antibacterial effective fraction of Myricaria alopecuroides Schrenk and study its chemical constituents. To apply the theory foundation for QC and further exploiting. Methods Cylinder-plate method was employed to study the antibacterial activity of Myricaria alopecuroides Schrenk. Chemical constituents were isolated and purified by solvent method and column chromatography (silica gel, Sephadex LH-20, macroporous resin HP-20).Structures of the compounds were elucidated on the basis of spectral analysis (MS,1H-NMR,13C-NMR, DEPT, and 2D-NMR) and comparison with literature data. Results Twelve compounds were isolated. Eleven compounds were identified as:ellagic acid 3,3',4-trimethylether (â… ), ellagic acid 3,3'-dimethylether (â…¡), isorhamnetin (â…¢), kaemferol (â…£),3,5-dihydroxy-4-methoxybenzoic acid (â…¤), daucosterol (â…¥),6,7,10-trihydroxy-8-octadecenoic acid (â…¦), quercetin (â…§), gallic acid(â…¨), palmitic acid (â…ª), hexadecanoic acid,2,3-dihydroxypropyl ester (â…«). Conclusion compoundâ… ,â…¡,â…¢,â…£,â…¤,â…¥,â…¦,â…©,â…ª,â…«were isolated from this plant for the first time. Among them, compoundâ… ,â…¡,â…¤,â…¦,â…©,â…ª,â…«were obtained from this genus for the frist time.