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- gentiopicroside tetraacetate 四乙酰龙胆苦甙
- Disodium ethylenediamine tetraacetate is a good sequesterant. 乙二胺四乙酸二钠是一种优秀的络合剂。
- Method Gentiopicroside in Jindan capsules was analyzed by TLC. 方法采用薄层色谱法对金胆胶囊中的龙胆进行鉴别；
- The content of gentiopicroside increase in the leaves and stem before July. 7月份以前根、茎、叶中龙胆苦苷的含量逐渐上升;
- Conclusion:Gentianine and gentianal were the important bioactive metabolites of gentiopicroside in rats. 结论:龙胆碱和龙胆醛是龙胆苦苷体内代谢的重要生物活性产物。
- OBJECTIVE:To establish a RP-HPLC method for the determination of Gentiopicroside in Zhuyuxiaotong capsules. 目的:建立以反相高效液相色谱法测定逐淤消痛胶囊中龙胆苦苷含量的方法。
- RESULTS The content of gentiopicroside in planting Gentiana is higher than in wild Gentiana. 结果栽培秦艽中龙胆苦苷的含量高于野生秦艽。
- METHODS The contents of gentiopicroside in wild and planting Gentiana was determinated by RP-HPLC method. 方法采用RP-HPLC测定野生和栽培秦艽中龙胆苦苷的含量。
- The determination of Gentiopicroside in Gentiana rigescens and it s preparation,Kudancao Tablet by TLC-SC method have been report in this paper. 报告用薄层色谱扫描法测定滇产龙胆生药及苦胆草片制剂中龙胆苦甙含量的方法和结果。
- Result:Gentiopicroside was metabolized quickly in vitro by rat intestinal flora, consequently gentianine and gentianal content appeared. 结果:血清中第2天检测到龙胆碱和龙胆醛，而龙胆苦苷的含量在第3天呈下降趋势；
- For the purpose of computing the amounts in column 3, disodium ethylene diamine tetraacetate shall be calculated as anhydrous calcium disodium ethylene diamine tetraacetate. 就计算第3栏的分量而言,乙二胺四乙酸二钠须以计算无水乙二胺四乙酸二钠钙的方法计算。
- Typical examples are oxalate and ethylenediamine as bidentate ligands, citrate as a tridentate ligand, and ethylenediamine tetraacetate (EDTA) as a hexadentate ligand. 典型的例子是草酸和乙二胺为双齿配体，柠檬酸作为一个三齿配体，和乙二胺四乙酸（EDTA）作为六齿配体。
- Objective:To analysis gentiopicroside content of Gentiana rigescens Franch.and to provide the data of idioplasmatic and medicinal appraisement for the planting programming. 目的:测定滇龙胆中龙胆苦苷的含量,提供其种质资源及药材质量评价、种植区划规划的依据。
- METHODS:The extraction craft was optimized by orthogonal test with gentiopicrin as an index,and the content of gentiopicroside was determined by TLC scanning method. 方法:以龙胆苦苷为指标,利用正交试验法进行提取工艺优选,并以薄层扫描法测定龙胆苦苷的含量。
- Salidroside was synthesized by first preparing the intermediate, salidroside tetraacetate (using tyrosol as starting material), and then deacetylizing it. 红景天甙以酪醇为原料,经制得中间体四乙酰基红景天甙后,再脱乙酰基合成而得。
- Lead dioxide may also be prepared by the hydrolysis of lead[IV] salts; for example, lead tetrachloride may be hydrolyzed in cold hydrochloric acid solution, or a saturated solution of lead tetraacetate may be hydrolyzed in glacial acetic acid. pbO2还可以通过水解四价铅盐的方法来制备,例如,pbCl4可以在冷的盐酸溶液中水解；而pb(OAc)4的饱和溶液可以在冰醋酸中水解。
- The objective of the research was to establish a quantitative method of simultaneously determination of loganic acid,swertiamarin and gentiopicroside in Swertia przewalskii with RP-HPLC. 目的:建立反相高效液相色谱法同时测定祁连獐牙菜中3种有效成分含量的方法。
- Gentianine and gentianal were observed after gentiopicroside oral administration 4 times in rat serum sample, and gentiopicroside content decreased after oral administration 6 times. 肠内菌体外培养液中龙胆苦苷含量的下降和龙胆碱与龙胆醛含量的上升呈同步变化。
- Then the protected D-mannitol, mixed with lead tetraacetate, hippuric and acetic anhydride, were refluxed in THF for 18 h in a one-pot two step reaction to afford a chiral precursor (Z)-2-phenyl-4-[(S)-2,3-O-(isopropylidene)]-propylidene-5(4H)-oxazolones. 产物与四乙酸铅、马尿酸、乙酐于THF中回流18 h完成一釜二步反应，纯化后得到含有手性碳原子的环丙烷氨基酸前体(Z)-2 苯基-4-[(S)-2，3-O-(异丙叉)]丙叉?f唑-5-酮，前体中的手性碳原子可作为环丙烷氨基酸衍生物不对称合成的手性源；
- Result: The ouptut decreased with the aggravation of the disease, and the decrease was obvious when the index of disease was above 60.The content of gentiopicroside and swertiamarin be... 结果:产量随病情加重而下降,在病情指数大于60时,产量下降明显,龙胆苦苷类成分含量在病情指数大于70时开始下降。
