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Antioxidant activity and total phenolic content of ethanolic extract of Caesalpinia bonducella seeds
Shruti Shukla Archana Mehta Jinu John Siddharth Singh Pradeep Mehta Suresh Prasad Vyas 《Food and chemical toxicology》2009
The aim of this study was to assess the in vitro potential of ethanolic extract of Caesalpinia bonducella seeds as a natural antioxidant. The DPPH activity of the extract (20, 40, 50, 100 and 200 μg/ml) was increased in a dose dependent manner, which was found in the range of 38.93–74.77% as compared to ascorbic acid (64.26–82.58%). The IC50 values of ethanolic extract and ascorbic acid in DPPH radical scavenging assay were obtained to be 74.73 and 26.68 μg/ml, respectively. The ethanolic extract was also found to scavenge the superoxide generated by EDTA/NBT system. Measurement of total phenolic content of the ethanolic extract of C. bonducella was achieved using Folin–Ciocalteau reagent containing 62.50 mg/g of phenolic content, which was found significantly higher when compared to reference standard gallic acid. The ethanolic extract also inhibited the hydroxyl radical, nitric oxide, superoxide anions with IC50 values of 109.85, 102.65 and 89.84 μg/ml, respectively. However, the IC50 values for the standard ascorbic acid were noted to be 70.79, 65.98 and 36.68 μg/ml respectively. The results obtained in this study clearly indicate that C. bonducella has a significant potential to use as a natural antioxidant agent. 相似文献
13.
目的:建立苦石莲中总二萜的含量测定方法,优化总二萜的提取工艺,并进行含量测定。方法:采用可见分光光度法,以5%香草醛/冰乙酸-高氯酸为显色剂,化合物caesalpinins K为对照品,在530 nm处测定其吸光度值,利用回归方程计算苦石莲中总二萜含量。结果:Caesalpinins K对照品溶液质量浓度在2.0~6.1 mg.L-1,线性关系良好,r=0.999 5(n=5),平均回收率为101.8%(RSD 2.3%)。结论:该方法简便、准确、重复性好,可以为苦石莲的质量控制提供依据。 相似文献
14.
目的研究小叶云实地上部分丙酮提取物的化学成分。方法利用硅胶柱色谱,Sephadex LH-20柱色谱等方法分离纯化;通过理化性质及IR、UV、MS、1H-NMR、13C-NMR等光谱数据鉴定化合物结构。结果分离得到12个化合物:金丝桃苷(Ⅰ),异甘草素(Ⅱ),甘草素(Ⅲ),正三十一烷(Ⅳ),正三十三烷(Ⅴ),1-二十九烷醇(Ⅵ),咖啡酸二十二酯(Ⅶ),β-谷甾醇(Ⅷ),胡萝卜苷(Ⅸ),岩白菜素(Ⅹ),11-没食子酰岩白菜素(Ⅺ),白藜芦醇(Ⅻ)。结论化合物Ⅰ~Ⅶ、Ⅹ~Ⅺ均首次从该属植物中分离得到。 相似文献
15.
《Pharmaceutical biology》2013,51(2):227-230
This study evaluated the in vivo immunomodulatory activities of the aqueous extract of Caesalpinia bonducella Fleming (Caesalpiniaceae) seeds. C. bonducella is a plant widely used in the traditional medicinal systems of India. In the present investigation, the aqueous extract of C. bonducella seeds was tested for its effect on cell mediated and humoral components of the immune system in rats. Administration of C. bonducella seed extract produced an increase of 93.03?±?4 mean hemagglutinating antibody (HA) titer and a change of 0.56?±?0.058?mm in delayed type hypersensitivity (DTH) as compared to control at a dose of 400?mg/kg body weight. Thus, the results of this study indicate that C. bonducella extract could be a promising immunostimulatory agent. 相似文献
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17.
苦石莲化学成分的分离与鉴定(IV) 总被引:1,自引:0,他引:1
目的对苦石莲中的化学成分做进一步研究。方法采用硅胶柱色谱、凝胶柱色谱和重结晶等多种方法分离纯化,根据理化性质及波谱学数据进行结构鉴定。结果分离得到9个化合物,分别鉴定为全反式-5-脱氧戊糖酸-γ-内酯(all-trans-5-deoxy-pentonic acid-γ-lactone,1)、腺苷(adeno-sine,2)、胡萝卜苷-6’-O-硬脂酸酯(daucosterol-6’-O-stearate,3)、7-acetoxybonducellpin C(4)、caesal-pinin K(5)、norcaesalpinin E(6)、neocaesalpin A(7)、neocaesalpin L(8)、neocaesalpin M(9)。结论化合物1、2为首次从云实属植物中分离得到,化合物3~5、7为首次从喙荚云实植物中分离得到。 相似文献
18.
The anti-inflammatory activities of five flavonoids, namely 5,7-dimethoxyflavanone (1), 5,7-dimethoxy-3′,4′-methylenedioxyflavanone (2), isobonducellin (3), 2′-hydroxy-2,3,4′,6′-tetramethoxychalcone (4) and bonducellin (5), all of them isolated from Caesalpinia pulcherrima L. was studied in lipopolysaccharide (LPS) and interferon (IFN)-γ activated murine peritoneal macrophages. These five compounds significantly and dose-dependently inhibited the inflammatory mediators; nitric oxide (NO), and cytokines [tumor necrosis factor (TNF)- and interleukin (IL)-12]. According to their inhibitory results, the order of anti-inflammatory potency was compounds 3 > 5 > 4 > 2 > 1. Furthermore, peritoneal macrophages were pre-activated with LPS/IFN-γ for 24 h, and determined the inhibitory effects of the above-mentioned isolates on the production of NO after a further 24 h. The present study supports the use of Caesalpinia pulcherrima for the treatment of inflammatory diseases in traditional medicine. This is the first study on compounds 1–5 about their anti-inflammatory activities. 相似文献
19.
Zhao-Hua Wu Jian Huang Wei-Dong Li Li-Jun Wu 《Journal of Asian natural products research》2013,15(9):781-787
Three new cassane-diterpene-lactones, methyl 1α,7β-diacetoxy-5α,12α-dihydroxy-cass-13(15)-en-16,12-olide-17β-carboxylate (1), methyl 7β-acetoxy-1α,5α,12α-trihydroxy-cass-13(15)-en-16,12-olide-17β-carboxylate (2), and 12α-ethoxyl-1α,6α,7β-triacetoxy-5α,14β-dihydroxy-cass-13(15)-en-16,12-olide (3), were isolated from the seeds of Caesalpinia minax Hance. Their structures were established on the basis of HR-ESI-MS, 1D and 2D NMR spectral analysis. 相似文献
20.
Chemical constituents from heartwoods of Caesalpinia sappan with antiplatelet aggregation activities
Yu Ji Ya-qiong Zhang Tong-dan Liu Meng-yuan Xi Chun-lin Long Li Wang Yue-hu Wang Yi Kong 《中草药(英文版)》2019,11(4):423-428
Objective:To clarify the active constituents of the heartwoods of Caesalpinia sappan,a traditional Chinese medicine with the functions of promoting blood circulation(Huoxue in Chinese) and removing blood stasis(Quyu in Chinese).Methods:The chemical constituents were isolated and purified by combination of silica gel and Sephadex LH-20 column chromatography,along with semipreparative HPLC.Their chemical structures were established by multiple spectroscopic methods and comparison with literature data.The in vitro antiplatelet aggregation activities were evaluated using mouse platelet induced by AYPGKF-NH2,a gold agonist of protease-activated receptor 4(PAR4).Results:Two new phenols,methyl 2-(4,4',5'-trihydroxy-2'-(methoxymethyl) biphenyl-2-yloxy) acetate(1)and 1'-methylcaesalpin J(2),together with 24 known compounds(3-26),were isolated from the heartwoods of C.sappan.Among them,sappanchalcone(16) and brazilin(20) showed inhibitory activities against mouse platelet aggregation with IC50 values of 114.8 μmol/L and 100.8 μmol/L,respectively.Conclusion:Antiplatelet compounds from C.sappan targeting at PAR4 are reported for the first time. 相似文献