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为了解大叶桃花心木(Swietenia macrophylla)树皮的化学成分,采用硅胶、凝胶、制备液相等手段分离、纯化,从其树皮提取物中分离得到9个化合物。根据理化性质及波谱数据,鉴定化合物结构分别为香草酸(1)、东莨菪素(2)、大黄素甲醚(3)、3,4,5-三甲氧基苯基-β-D-吡喃葡萄糖苷(4)、(+)-儿茶素(5)、5′-甲氧基异落叶松脂素-9′-O-β-D-吡喃木糖苷(6)、南烛木树脂酚-9′-O-β-D-吡喃木糖苷(7)、豆甾醇(8)、豆甾醇-3-O-β-D-吡喃葡萄糖苷(9)。除化合物5外,其余化合物为首次从该植物中分离。细胞毒活性试验表明化合物均无显著的细胞毒活性。 相似文献
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Derivation conditions of pre-column derivation-HPLC method used for determinating artemisinin content were compared and selected,and artemisinin content in above-ground part of Artemisia annua L.from seventeen locations was compared by optimal pre-column derivation-HPLC method.The optimal derivation condition is selected via comparing of 0.2% NaOH solution addition(3,4,5,6 and 7 mL),derivation temperature(30 ℃,35 ℃,40 ℃,45 ℃ and 50 ℃) and derivation time(0,2,5,10,20,40 and 60 min) during derivation process.The optimal derivation condition is adding 5 mL 0.2% NaOH solution,then insulating in 40 ℃ water bath for 10 min.Differences of artemisinin content in A.annua from seventeen locations are obvious,the general trend is that artemisinin content decreases gradually with location from south to north,in which artemisinin content in A.annua from Youyang of Chongqing is the highest with a value of 7.08 mg·g-1.The method is simple and accurate with good reproducibility,and can be used to determinate artemisinin content in medicinal material of A.annua. 相似文献
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为了解宁前胡内生真菌Fusarium tricinctum固体发酵代谢产物的化学成分,采用硅胶色谱、中压以及制备液相等方法对其进行分离鉴定和抗肿瘤活性研究。结果表明,从其中分离得到14个化合物,结构鉴定分别为fungerin (1)、fusagerins F (2)、6-[(3R)-3-hydroxybutan-2-yl]-5-(hydroxymethyl)-4-methoxy-2H-pyran-2-one (3)、6-[(3S)-3-hydroxybutan-2-yl]-5-(hydroxymethyl)-4-methoxy-2H-pyran-2-one(4)、6α-chlamydosporol(5)、6β-chlamydosporol(6)、(3R,4R)-(–)-4-hydroxymellein(7)、(3R)-(–)-8-hydroxymellein (8)、enniatin B (9)、enniatin B1 (10)、enniatin A1 (11)、enniatin A (12)、enniatin B3 (13)和enniatin B2 (14)。所有化合物均为首次从宁前胡内生真菌中分离得到。体外抗肿瘤活性试验表明化合物均无显著的细胞毒活性。 相似文献
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木棉(Bombax ceiba L.)为木棉科木棉属植物,主要含有黄酮类、有机酸类、甾体类、三萜类、香豆素类等化学成分,具有镇痛、抗炎、抗氧化、抗菌消炎、保肝等药理活性。本文通过查阅近年来国内外的相关文献,对木棉化学成分及药理活性的相关研究进行了整理和总结,为其进一步开发和利用提供一定的科学依据和理论基础。 相似文献