回春93口服液中绞股蓝和冬虫夏草的鉴别

在硅胶G薄层板上，以氯仿-乙醚（1∶1）为展开剂，薄层色谱法鉴别制剂中绞股蓝，在硅胶GF254薄层板上，以正丁醇-冰醋酸-水（10∶1∶1）为展开剂，薄层色谱法鉴别制剂中的冬虫夏草。斑点清晰，易于分析。     

蒙药壮西-6味丸中红花和土木香的薄层色谱鉴别研究

目的：对蒙药壮西-6味丸中红花和土木香的质量控制方法进行研究。方法：以乙酸乙酯---冰醋酸-水-甲醇（3∶1∶1∶0.1）为展开剂,在硅胶H薄层板展开,进行红花薄层色谱的定性鉴别;以石油醚（60℃～90℃）-环己烷-乙酸乙酯（5∶0.5∶1）为展开剂,硅胶G薄层板上展开,进行土木香的薄层色谱的定性鉴别。结果：阴性对照无干扰,分离的效果好,色谱斑点清晰。结论：该鉴别方法灵敏、可靠、专属性强,可作为蒙药壮西-6味丸中红花和土木香质量控制方法。     

西藏黄连和云南黄连的薄层鉴别

目的 用薄层色谱法鉴别西藏黄连和云南黄连.方法 用硅胶G板,乙酸乙酯-氯仿-甲醇-氨水-二乙胺(8:2:2:1.5:1)为展开剂,紫外灯(365 nm)下观察.结果 两种黄连的薄层色谱图存在明显差异,云南黄连中含有巴马汀,西藏黄连则未见相应斑点.结论 巴马汀可作为鉴别西藏黄连和云南黄连根茎的特征性斑点.     

金利油软胶囊质量标准中秦皮乙素薄层色谱鉴别方法的研究

本文采用薄层色谱法对金利油软胶囊中秦皮乙素进行定性鉴别。软胶囊内容物经水提取后在硅胶G板上以甲苯－乙酸乙酯－甲酸－乙醇为展开剂展开后在紫外灯下检视，在与标准品相应的位正有相同的斑点。该法简便结果准确，重视性好，在该制剂质量标准中已准备采用。     

溪黄草、线纹香茶菜、线纹香茶菜狭基变种、线纹香茶菜细花变种的外观形态比较

目的 通过对溪黄草、线纹香茶菜、线纹香茶菜狭基变种、线纹香茶菜细花变种这4种植物的外观形态进行观察比较,根据实验结果编制出不同的检索表,以求快速、准确地将4种植物进行鉴别.方法 用肉眼以及显微的方法进行观察.结果与结论 4种植物的外观形态有相似之处,亦有一些明显的差异,通过这它们的差异,编制出各种检索表,能够快速、准确地鉴别这4种植物.     

溪黄草、线纹香茶菜及其变种的资源分布与利用调查

目的 对溪黄草、线纹香茶菜、线纹香茶莱狭基变种、线纹香茶菜细花变种的资源分布状况以及资源利用状况进行调查,为溪黄草类药材资源的开发利用提供有效的依据.方法 利用查阅文献资料、查阅标本馆资料、实地调查的方法进行资料的收集.结论 溪黄草、线纹香茶莱、线纹香茶莱狭基变种、线纹香茶菜细花变种在全国范围的分布广泛.这些药材可在全...     

蒙药灰栒子的显微鉴别及薄层鉴别

目的：对灰栒子进行显微鉴别和薄层鉴别研究。方法：采用组织横截面、粉末鉴别等方法对药材的显微鉴别进行研究;采用薄层鉴别方法,以硅胶G为吸附剂,环己烷∶氯仿∶乙酸乙酯（22∶5∶8）、环己烷∶丙酮∶乙酸乙酯（5∶2∶1）为展开剂,展开并观察。结果：对药材的茎横截面和粉末的显微鉴别特征进行描述、绘图;药材在与对照品相同的位置上,显相同颜色的斑点。结论：灰栒子药材横截面及粉末的显微图谱具有明显的特征性,薄层色谱方法操作简便、斑点明显、分离度和重现性好,可为该药材的鉴定和质量标准的提高提供科学依据。     

九种香茶菜属药用植物的形态组织学研究

目的:鉴别四川9种药用香茶菜,确保用药的安全有效.方法:采用形态组织学方法,比较观察了碎米桠、线纹香茶菜、狭基线纹香茶菜、毛萼香茶菜、瘿花香茶菜、细锥香茶菜、黄花香茶菜、显脉香茶菜、腺花香茶菜等的药材性状、茎和叶横切面、叶表面与药材粉末特征.结果:9种药用香茶菜的药材性状和显微特征不同,提供了特征图表和鉴别检索表.结论:提供了相关药用香茶菜品种真伪鉴别的方法.     

中药中48种非法染色色素的TLC法检测

建立了薄层色谱法检测中药中的48种非法染色色素.分别采用乙腈、0.1％甲酸甲醇溶液、甲醇∶0.1％甲酸(3∶2)混合溶液超声提取样品粗粉.将乙腈提取液与脂溶性色素对照溶液点于同一硅胶G板上,以石油醚∶乙醚∶无水甲酸(80∶20∶1)为展开剂展开.将0.1％甲酸甲醇溶液提取液与水溶性碱性色素对照溶液点于同一硅胶G板上,以乙酸乙酯∶乙醇∶水∶氨水(12∶1∶1∶1.2)为展开剂展开.将甲醇∶0.1％甲酸(3∶2)提取液与水溶性酸性色素对照溶液点于同一硅胶G板上,以乙酸乙酯∶乙醇∶水∶氨水(6∶4∶2∶0.2)为展开剂展开.均在日光下检视.48种色素的检测限为0.025～0.6 μg.本法快速简便,可应用于中药材多色素染色初步筛查.     

六味地黄丸中马钱苷的薄层鉴别

目的研究建立六味地黄丸中马钱苷的薄层色谱。方法采用硅胶G薄层板,以三氯甲烷-乙酸乙酯-甲醇-甲酸(40∶5∶10∶0.2)为展开剂。制定了马钱苷的薄层鉴别。结果色谱斑点清晰,重现性好。结论该方法可以快速的鉴别马钱苷,便于基层快速检验。     

狭基线纹香茶菜的化学成分

目的对唇形科香茶菜属植物狭基线纹香茶菜(Isodon lophanthoides(Buch.Ham.ex D.Don)Haravar.gerandianus(Benth.)Hara)即中药溪黄草的化学成分进行研究。方法体积分数为95%乙醇提取物的水混悬液经环己烷、乙酸乙酯、正丁醇分步萃取,再对乙酸乙酯层运用硅胶、D101大孔树脂S、ephadex LH 20、ODS等柱层析手段并配合HPLC进行分离、纯化;通过化学方法及波谱分析鉴定其结构。结果分离得到并鉴定了6个化合物:既6去羟基迷迭香酸甲酯(methyl 6 dehy-droxyl rosmarinate,1)、迷迭香酸甲酯(methyl rosmarinate,2)、咖啡酸(caffeic acid,3)、6,7二羟基香豆素(6,7 dihydroxycoumarin,4)、槲皮素(quercetin,5)、蓟黄素(cirsimaritin,6)。结论化合物1为新天然产物,化合物4为首次从该属中分离得到,化合物3、6为首次从该植物中分离得到。     

Network pharmacology-based strategy to investigate harmacological mechanisms of Isodon serra (Maxim.) Hara for treatment of inflammatory

Widely distributed in plants, ent-kaurane diterpenoids could reduce the incidence of inflammatory. The most important active ingredient of Isodon serra (Maxim.) Hara is ent-kaurane diterpenoids, which contribute to the anti-inflammatory pharmacological effects of Isodon serra. However, the ingredients, the active compounds, drug targets, inflammatory targets and exact molecular mechanism of Isodon serra in treating inflammatory are still unclear. The purpose of this study was to use the method of network pharmacological analysis to find the active compounds in Isodon serra. These active compounds match the library of ent-kaurane diterpenoids compounds we established, and we find all the eligible ent-kaurane diterpenoids compounds. Isodon serra related and anti-inflammatory targets were found and then combined to get intersection, which represented potential anti-inflammatory targets of active compounds in Isodon serra. Moreover, anti-inflammatory targets and active compounds targets protein-protein interaction network were merged to get the protein-protein interaction network intersection and core genes in anti-inflammatory target protein-protein interaction network. For the anti-inflammatory targets of Isodon serra, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were executed to confirm gene functions of Isodon serra in antagonizing inflammation. Finally, TCMSP analysis identified 10 active compounds out of 48 ent-kaurane. The pathway analysis showed enrichment for different pathways like AGE-RAGE signaling pathway in diabetic complications, small cell lung cancer and human cytomegalovirus infection, which were all connected to inflammatory. On the whole, the proposed method clearly identified the ent-kaurane diterpenoids of Isodon serra and the results gave the active compounds of Isodon serra for the first time. The combining use of the qualitative analysis of traditional Chinese medicine (TCM) and network pharmacological methods could discover potential drug targets and reveal the biological process of TCM, which would open up a new approach in the study of TCM in future.     

Diterpenoids from Isodon leucophyllus

The structures of two new ENT-kaurane diterpenoids and two derivatives of shikokianin isolated from leaves of Isodon leucophyllus were elucidated by 1D and 2D NMR techniques as 11alpha-acetoxyeffusanin D, 6-acetylepinodosinol, 16beta-ethoxymethyleneshikokianin, and 16alpha-ethoxymethyleneshi-kokianin.     

Cytotoxic ent-kauranoids from Isodon leucophyllus

Two new compounds, baiyecrystals D and E (1, 2), together with eight known analogues, xerophilusin B (4), macrocalin B (5), oridonin (6), rosthorin A (7), lasiocarpanin (8), rabdoternin A (9) and phyllostachysin A (10) and B (11), were isolated from the aerial parts of Isodon leucophyllus. The structures of 1 and 2 and 4-11 were elucidated on the basis of spectroscopic methods, especially the 2D NMR spectral analysis. Compounds 2, 6-8 and 10 were evaluated for their antineoplastic activities in vitro. Among them, lasiocarpanin (8) showed significant inhibitory activities against K562 and Bcap37 cells, with the IC₅₀ values of 0.13 and 1.26 μg mL_-1, respectively, which were lower than those of the positive control.     

Cytotoxic diterpenoids from Isodon enanderianus

Five new ent-kaurane diterpenoids, enanderianins K-O (1-5), and one new ent-abietane diterpenoid, enanderianin P (6), together with five known ent-kaurane diterpenoids, rabdocoetsin A (7), rabdocoetsin B (8), rabdocoetsin D (9), megathyrin A (10), megathyrin B (11) were isolated from the aerial parts of Isodon enanderianus. Their structures were determined by spectral means. Some diterpenoids were tested for their cytotoxicity against the human tumor K562 cells. Compounds 1, 2, 6, 8, 9 showed significant inhibitory activities against K562 cells with IC50 values ranging from 0.13 to 0.87 microg/mL.     

Chemical constituents of Isodon melissoides

Four new diterpenoids, melissoidesin E (1), F (2), G (4) and H (5), together with one known diterpenoid and two lignan glycosides, were isolated from aerial parts of Isodon melissoides. Their structures were established by spectral analysis and comparison with related compounds. The lignan glycosides (compounds 7 and 8) were the first examples to be isolated from the genus Isodon plants.     

Antiproliferative ent-Kauranoids from Isodon parvifolius

Nine new 7alpha,20-epoxy- ENT-kaurane diterpenoids, parvifolines O - W (1 - 9), together with five known analogues, lasiocarpanin (10), rosthorin A (11), longikaurin E (12), adenolin D (13) and longikaurin B (14), were isolated from the leaves of Isodon parvifolius. Their structures were determined by means of spectroscopic analysis. Selected diterpenoids (1 - 10) were tested for their antiproliferative activity against A549, HT-29 and K562 cells. Compounds 3, 7, 8 and 10 showed moderate inhibitory activity against all three cell lines.     

Three new 11,20-epoxy-ent-kauranoids from Isodon rubescens

Three rare and new 11,20-epoxy-ent-kaurane diterpenoids, named jianshirubesins D-F (1-3), along with one known analogue (4), were isolated from the aerial parts of Isodon rubescens. Their structures were established by analysis of spectroscopic data. Found in the MTT assay to evaluate the cytotoxicity of compounds 1, 2, and 4, only 1 could selectively inhibit certain cell lines from proliferating. In addition, a simple structure-activity relationship discussion might suggest a new bioactive moiety, different from the α,β-unsaturated ketone group.     

Cytotoxic ent-kaurane diterpenoids from Isodon macrophyllus

Two new ent-kaurane diterpenoids, dayecrystals D–E (1–2), together with nine known compounds, isojaponin A (3), rabdosin A (4), lushanrubescensin J (5), wikstroemioidin B (6), maoyecrystal C (7), rabdosin B (8), isodonal (9), shikokianin (10), and effusanin A (11), were isolated from the leaves of Isodon macrophyllus. The structures of the new compounds were elucidated using 1D and 2D NMR spectroscopy. The ¹³C-NMR spectral data of compound 4 are reported for the first time. All of the compounds were tested for their cytotoxicities against DU145 and LoVo human tumor cells. Compounds 4, 10, and 11 showed inhibitory effects on DU145 cells with IC₅₀ values 5.90, 4.24, and 3.16 μM, and LoVo cells with IC₅₀ values 14.20, 17.55, and 3.02 μM, respectively.