番石榴叶乙醇提取物的化学成分研究

目的 研究番石榴叶乙醇提取物的化学成分。方法 利用硅胶柱色谱、中压液相色谱、高效液相色谱等色谱技术对番石榴叶乙醇提取物的成分进行分离纯化,通过波谱数据分析,鉴定化合物的结构。结果 从番石榴叶中共分离鉴定10个化合物,分别为: guajadial（1）、psiguajadial G（2）、guajadial C（3）、psiguajadial E（4）、physcion（5）、4-methoxy-6-phenyl-2H-pyran-2-one（6）、(6S, 8R)-loliolide（7）、teuhetenone A（8）、(R)-(–)-mellein methyl ether（9）、2-羟基苯甲酸苄酯（10）。结论 化合物1–4为混源萜类化合物,化合物5-10为首次从番石榴中分离得到。利用X-射线单晶衍射方法对化合物1和7的绝对构型进行了确证。     

Antifungal study of the resinous exudate and of meroterpenoids isolated from Psoralea glandulosa (Fabaceae)

Ethnopharmacological relevance

Psoralea glandulosa L. (Fabaceae) is a medicinal resinous shrub used in Chilean folk medicine as antiseptic in treatment of infections and skin diseases caused by bacteria and fungus.

Aim of the study

To evaluate the in vitro antifungal activity of the resin and the active components from P. glandulosa against clinical yeast isolates.

Materials and methods

Active compounds were obtained of the resinous exudate from aerial parts of P. glandulosa. Eight species of yeast were exposed to the resin and two major compounds. Minimum inhibitory concentration (MIC₈₀) was determined according to the standard broth microdilution method.

Results

Bakuchiol and 3-hydroxy-bakuchiol demonstrated potent activity with the MIC₈₀ ranging from 4 to >16 and 0.125 to 16 μg/mL, respectively. The resin had some degree of antifungal activity.

Conclusions

The overall results provided important information for the potential application of the 3-hydroxy-bakuchiol from P. glandulosa in the therapy of serious infection and skin diseases caused by clinical yeast.     

海洋真菌 Penicillium sclerotiorum GZU-XW03-2来源的杂萜类成分研究

目的 为获得结构多样、活性显著的次级代谢产物,对1株海洋来源真菌Penicillium sclerotiorum GZU-XW03-2的化学成分进行研究.方法 菌种经过活化后,经大米固体培养基大规模发酵后的菌丝体用甲醇浸提,旋干后,用水混悬,接着用乙酸乙酯萃取得粗提物.乙酸乙酯萃取物经硅胶色谱、凝胶色谱、反相色谱及高效...