A study on the chemical constituents of Veratrum nigrum L. processed by rice vinegar

One new steroid alkaloid, 12β-hydroxylveratroylzygadenine (1) and four known compounds, verdine (2), jervine (3), veramarine (4), and veratroylzygadenine (5), have been isolated from the roots and rhizomes of Veratrum nigrum L. processed by rice vinegar. Their structures were established through a combined analysis of physicochemical properties and spectroscopic evidence. The assay results revealed that compounds 1, 4, and 5 exhibited cell toxicity against human HL-60 cells with IC₅₀ values 52.67, 52.90, and 56.51 μmol/l, respectively.     

A study on the chemical constituents of Veratrum nigrum L. processed by rice vinegar

One new steroid alkaloid, 12beta-hydroxylveratroylzygadenine (1) and four known compounds, verdine (2), jervine (3), veramarine (4), and veratroylzygadenine (5), have been isolated from the roots and rhizomes of Veratrum nigrum L. processed by rice vinegar. Their structures were established through a combined analysis of physicochemical properties and spectroscopic evidence. The assay results revealed that compounds 1, 4, and 5 exhibited cell toxicity against human HL-60 cells with IC50 values 52.67, 52.90, and 56.51 micromol/l, respectively.     

藜芦的黄酮类化学成分研究

目的:对百合科藜芦属植物藜芦Veratrum nigrumL.的黄酮类化学成分进行分离和结构鉴定。方法:采用溶剂法、硅胶柱层析、Sephadex LH-20柱层析进行成分分离和纯化,通过理化性质和波谱技术鉴定化合物的结构。结果:从藜芦乙醇提取物中分离鉴定了9个黄酮类化合物,分别鉴定为3-甲氧基异鼠李素(3-methoxylisorhamnetin,1)、异鼠李素(isorham-netin,2)、3-甲氧基槲皮素(3-methoxylquercetin,3)、槲皮素(quercetin,4)、异槲皮苷(isoquercitrin,5)、3,5,7-三羟基-3′,5′-二甲氧基黄酮(3,5,7-trihydroxy-3′,5-′dimethoxylflavone,6)、5,7,4′-三羟基-3′-甲氧基黄酮(5,7,4-′trihydroxy-3-′methoxyl-fla-vone,7)、5,7,3′,4′-四羟基黄酮(5,7,3′,4-t′etrahydroxyflavone,8)、5,7,3′,5′-四羟基黄酮(5,7,3′,5-′tetrahydroxyflavone,9)。结论:化合物1~9均为首次从该植物中分离得到。     

Alkaloid profiling of crude and processed Veratrum nigrum L. through simultaneous determination of ten steroidal alkaloids by HPLC-ELSD

Veratrum nigrum L., a traditional Chinese herb, has been used for treatment of hypertension, blood-stroke, excessive phlegm, epilepsy, etc. Steroidal alkaloids were well-known as both bioactive and toxic constituents of Veratrum species, the toxicity of which the traditional processing procedure can reduce. To reveal the mechanism of processing V. nigrum L., a high performance liquid chromatography (HPLC) with evaporative light scattering detector (ELSD) method was developed for the simultaneous determination of ten steroidal alkaloids in crude and processed V. nigrum L., comparison with ultrasound extract of crude V. nigrum L. With a Venusil XBP-C(18) analytical column, the analytes were separated efficiently using the mobile phase consisted of (A) 0.03% aqueous triethylamine (TEA) and (B) acetonitrile in a gradient program. The parameters for ELSD were set: S.C. (Spray Chamber)=35 degrees C, D.T. (Drift Tube)=70 degrees C, GAS=50 psi. All calibration curves showed good linear regression (gamma>or=0.9990) within the tested range. Additionally, reproducibility for the quantification of ten alkaloids in V. nigrum L. with intra- and inter-day variations of less than 5.0% was observed. The obtained alkaloid profiles performed by this newly established method, provided valuable information for the differentiation of crude and processed V. nigrum L. and for the explanation of the different toxicity.     

中药黄独的化学成分研究

薯蓣属植物中药黄独 (DioscoreabulbiferaL .)的 75 %乙醇提取物经系统溶剂萃取后 ,从乙酸乙酯萃取部分分离得到 5个化合物 ,根据理化性质和谱学分析鉴定为 β 谷甾醇 (β sitosterol,Ⅰ ) ,黄独素B(diosbulbin B ,Ⅱ ) ,7,3′ ,4′ 三羟基 3 ,5二甲氧基黄酮 (caryatin ,Ⅲ ) ,7,4′ 二羟基 3 ,5 二甲氧基黄酮 (7,4′ dihydroxy 3 ,5 dimethoxyflavone ,Ⅳ ) ,5 ,7,3′ ,4′ 四羟基黄烷 3 醇 (5 ,7,3′ ,4′ tetrahy droxyflavan 3 ol,Ⅴ )。其中 (Ⅲ )、(Ⅳ )为首次从该属植物中分离得到的已知化合物     

香青兰子化学成分的初步研究

目的研究香青兰(Dracocephalum moldavica L.)种子的化学成分。方法采用硅胶柱层析、Sephadex LH-20柱层析、薄层色谱、HPLC色谱等方法,分离纯化香青兰子的化学成分,通过UV、MS、NMR波谱方法对其结构进行解析和鉴定。结果分离并鉴定了6个化合物的结构,分别为田蓟苷(tilianin,1),β-胡萝卜苷(daucosterol,2),黄芪苷(astragalin,3),阿魏酸(ferulic acid,4);咖啡酸(caffeic acid,5),2,5-二羟基苯甲酸(2,5-dihydroxy benzoic acid,6)。结论所有化合物均为首次从香青兰子中分离得到。     

Inhibitory effects of Veratrum nigrum L. Var. ussurience Nakai alkaloids on the hypertrophy of cardiomyocytes from neonatal rat

Objective To examine the effects of Veratrum nigrum L.Var.ussurience Nakai alkaloids(VnA)on angiotensin Ⅱ(AngⅡ)-induced cardiomyocyte hypertrophy and to explore its possible mechanism.Methods The cadiocytes were induced by AngⅡ to set up myocardial hypertrophy model,the animals were divided into six groups according to the different treatments:control group,model group,positive control group,VnA group(low,middle and high dose).The cell protein content,the cell diameter and the expression of calcineurin(CaN)were measured respectively by BCA method,the micrometer and immunofluorescence analysis.Results VnA(middle and high dose)and Captopril inhibited significantly the increase in the protein content induced by AngⅡ(P<0.01).VnA and Captopril inhibited significantly the increase in the diameters induced by AngⅡ(P<0.01).By immunofluorescence analysis,the expression of calcineurin(CaN)was obviously increased in the AngⅡ-induced model group.VnA decreased the expression of CaN significantly.Conclusions VnA could inhibit the cardiomyocyte hypertrophy induced by AngⅡ significantly in a dose-dependent manner.The possible mechanism may be related to the inhibition of CaN expression.     

乌苏里藜芦生物碱单体新计巴丁的抗血栓作用

目的:研究乌苏里藜芦生物碱单体新计巴丁(neogermbudine,NG)的抗动、静脉血栓形成作用及初步作用机制探讨.方法:应用电刺激诱发大鼠颈总动脉血栓形成模型和淤血诱发下腔静脉血栓形成模型评价NG的抗动、静脉血栓形成作用;采用Born法测定NG在体、内外对血小板聚集的抑制活性;采用凝血酶时间法测定NG对血凝时间的影响.结果:与生理氯化钠溶液(NS)组相比,NG 4种剂量(5～40 μg·kg-1)组血管阻塞时间(OT)均显著延长,下腔静脉淤血形成血栓的干重明显降低;体内、外血小板聚集率均显著下降,凝血酶时间显著延长.上述指标均呈良好的量效关系.结论:NG具有较强的抗动、静脉血栓形成作用,该作用与NG的抗血小板作用和抗凝作用有关.     

石莼的化学成分

目的研究绿藻石莼的化学成分。方法利用硅胶柱色谱、Sephadex LH 20、HPLC等方法进行分离纯化,并根据理化性质和波谱数据进行结构鉴定。结果得到6个化合物,分别鉴定为豆甾24R,28R环氧5烯3β醇(Ⅰ)、豆甾5,24(28)二烯3β醇(Ⅱ)、豆甾5,28(29)二烯3β醇(Ⅲ)、β谷甾醇(Ⅳ)、对羟基苯甲酸(Ⅴ)、琥珀酸(Ⅵ)。结论化合物除(Ⅱ)以外均为首次从石莼中分离得到。     

Studies on the chemical constituents of Psoralea corylifolia L.

A new isoflavone, corylinin (1), along with six known compounds, isopsoralen (2), psoralen (3), sophoracoumestan A (4), neobavaisoflavone (5), daidzin (6) and uracil (7), have been isolated from the dried fruits of Psoralea corylifolia L. The structure of 1 was established as 7,4′-dihydroxy-3′-[(E)-3,7-dimethyl-2,6-octadienyl]isoflavone on the basis of the spectroscopic methods. Structures of the known compounds were identified by comparison of the literature.     

万寿菊花的化学成分研究

目的对万寿菊花进行化学成分的研究。方法万寿菊花经溶剂提取与硅胶柱层析分离得到5个化合物 ,通过光谱分析和化学方法进行结构鉴定。结果分离并鉴定了 5个化合物。结论尿嘧啶和甘露醇为首次从万寿菊属植物中分离得到的已知化合物     

拳参的化学成分

目的分离蓼科蓼属植物拳参 (PolygonumbistortaL )根茎 95 % (φ)乙醇提取物的化学成分并进行鉴定。方法利用硅胶柱色谱、聚酰胺柱色谱进行分离纯化 ,根据理化性质和光谱数据进行结构鉴定。结果得到 5个化合物 ,分别鉴定为没食子酸 (Ⅰ )、丁二酸 (Ⅱ )、槲皮素 (Ⅲ )、槲皮素 5 O β D 葡萄糖苷 (Ⅳ )、原儿茶酸 (Ⅴ )。 结论化合物Ⅱ、Ⅳ为首次从该属植物中分得     

中药黄独的化学成分研究

继前期的研究 ,又相继从中药黄独 (DioscoreabulbiferaL .) 75 %醇提取物的乙酸乙酯萃取部分分离得到 5个化合物。经理化性质和谱学分析 ,鉴定其结构为 3,4 二羟基苯甲酸 (Ⅰ ) ,杨梅树皮素 (Ⅱ ) ,金丝桃苷 (Ⅲ ) ,杨梅树皮素 3 O β D 半乳糖苷 (Ⅳ ) ,杨梅树皮素 3 O β D 葡萄糖苷(Ⅴ ) ,这 5个化合物均是首次从薯蓣属植物中分离得到的已知化合物。     

芫花醋炙品中黄酮类成分的分离与鉴定

目的更好地开发利用芫花(Daphne genkwa Sieb.et Zucc)药用植物资源。方法用硅胶、羟丙基葡聚糖凝胶LH-20柱色谱、HPLC分离纯化;根据理化性质和NMR谱数据鉴定其结构。结果从醋炙芫花的乙醇提取物中分离得到9个黄酮类化合物,分别鉴定为芫花素(genkwanin,1)、3′-羟基芫花素(3′-hydroxy-genkwanin,2)、芹菜素(apigenin,3)、洋芹素-4′,7-二甲醚(4′,7-dimethylapige-nin,4)、椴苷(kaempferol-3-β-D-(6-O-trans-p-coumaroyl)glucopyranoside,5)、4′,5-二羟基-3′,7-二甲氧基黄酮(4′,5-dihydroxy-3′,7-dimethoxyflavone,6)、4′,5,7-三甲氧基黄酮(4′,5,7-trimethoxyfla-vone,7)、山奈酚-3-O-β-D-葡萄糖苷(kaempferol-3-O-β-D-glucoside,8)、3′,4′,5,7-四甲氧基黄酮(3′,4′,5,7-tetramethoxyflavone,9)。结论化合物1~9均为首次从芫花醋炙品中分离得到,化合物7、8为首次从瑞香属植物中分离得到,化合物9为首次从芫花中分离得到。     

凤仙花化学成分及药理作用研究进展

目的介绍凤仙花的化学成分及药理作用的研究进展。方法根据近年来的29篇文献,对凤仙花的主要化学成分及药理药效进行综述。结果凤仙花含有大量黄酮类、萘醌类、香豆素类、甾醇类等成分,有些为首次从凤仙花中得到的全新化合物;具有较好的抗过敏、抗炎、抗真菌等作用。结论凤仙花有待进一步研究开发。     

夏枯草的化学成分及生物活性研究进展

目的对中药夏枯草的化学成分和生物活性作一综述。方法按照化合物的结构类型对夏枯草的化学成分进行分类综述 ,并且对其主要的生物活性进行综述。结果夏枯草含有多种活性化学成分 ,主要有三萜类、甾体类、黄酮类、香豆素类等化合物 ,它具有降压、抗菌、抗病毒及抗炎和抗肿瘤等生物活性。结论为夏枯草的研究与开发提供了参考     

黑紫藜芦化学成分研究

目的 研究黑紫藜芦(Veratrum japonicum Loes.f.)的化学成分.方法 利用酸碱处理及硅胶柱色谱进行系统分离,通过理化性质和波谱数据鉴定结构;利用黄鸣龙反应还原主要成分介藜芦碱.结果 分离并鉴定了其中5个化合物,分别是正二十八烷醇(1)、β-谷甾醇(2)、表红介藜芦碱(3)、胡萝卜苷(4)、介藜芦碱(5);还原介藜芦碱得到抗肿瘤活性物质环巴胺.结论 化合物1～4均为首次从该植物中分离得到;首次利用黄呜龙反应还原介藜芦碱,并得到一个副产物3-表环巴胺.     

紫花苜蓿化学成分及药理活性的研究进展

目的对紫花苜蓿的化学成分和药理活性研究进展作一综述。方法按照化合物的结构类型对紫花苜蓿的化学成分进行分类综述,并且对其主要的药理活性进行综述。结果与结论紫花苜蓿含有多种活性化学成分,主要有黄酮类、皂苷类、挥发油、香豆素等化合物,具有降血脂、抗动脉粥样硬化、免疫调节、雌激素样作用、抗氧化、抗菌等药理活性。     

白芍的化学成分研究

从白芍 (PaeonialactifloraPall.)的干燥根中分离得到 5个化合物 ,经理化常数和光谱分析分别鉴定为芍药苷 (1)、苯甲酰芍药苷 (2 )、没食子酰芍药苷 (3)、1,2 ,3 ,4,6 五没食子酰基葡萄糖(4 )和胡萝卜苷 (5 )