Three known compounds were isolated from the endophytic fungus Trichoderma sp Xy24 from a mangrove plant Xylocarpus granatum by using various column chromatography techniques. Their structures were identified as harzianone （1）, trichoacorenol （2）, and trichodimerol （3） by extensive spectroscopic analysis. Among them, 1 was a harziane diterpene, 2 was a sesquiterpene alcohol, and 3 was a polyketide with a completely symmetric configuration. Compound 3 exhibited medium inhibitory activity with an IC50 value of 74.6 μM using a NA （H7N9）/MUNANA model.
目的:评价中西医结合治疗阿尔茨海默病的疗效。方法:计算机检索中国期刊全文数据库、万方数据库、中文科技期刊全文数据库、SCI数据库(web of science),搜集老年痴呆/阿尔茨海默病的随机对照试验,采用Jadad风险评价表评价其研究质量,提取资料并通过Rev Man5.2软件进行数据分析。结果:共纳入37个随机对照试验,其中对照组单独为西药的为33个,患者共计2,641例,对照组单独为中药的为4个,患者共计263例。Meta分析结果显示:中西医结合治疗阿尔茨海默病优于单一中药或西药疗法,且未见严重不良反应。结论:中西医结合治疗阿尔茨海默病优于单一疗法,可以提高临床总有效率,但安全性尚需要进一步探讨。
