查询词典 oleanolic acid

ObjectiveTo develop a new method for simultaneous determination of ursolic acid and oleanolic acid in Prunella vulgaris L.

目的建立同时测定夏枯草中乌索酸及齐墩果酸含量的方法。

This method is reliable,rapid and accurate, which could be used for the quantitative analysis of the contents of oleanolic acid and ursolic acid in Prunella vulgaris.

该法简便、准确、快速、重现性好，可用于夏枯草药材中齐墩果酸和熊果酸的含量测定。

To study the optimum technology of extracting bioactive component named Oleanolic acid and Ursolic acid in Chinese Quince.

用正交试验法对木瓜中的齐墩果酸和熊果酸的提取工艺进行研究。

Tseng resource, The extraction, purification and determination of saponins in Ilex Kudingcha C.J.Tseng were firstly researched, a RP-HPLC method was established for determination the content of oleanolic acid and ursolic acid in Ilex Kudingcha CJTseng simultaneously. At the same time, the technical parameters of sapogenin extraction sapogenin and the solvent system of HPTLC for separation the sapogenins was seeked. The main results are as follows:1. A spectrophotometric method was established for quantitative determination the total content of saponins in Ilex Kudingcha C.J.

为了推进苦丁茶化学成分生物活性研究，挖掘该植物的药用价值和为其资源的综合开发应用提供科学依据，本文研究苦丁茶皂苷的检测方法、探讨苦丁茶皂苷的提取纯化条件、建立HPLC法同时检测熊果酸和齐墩果酸的含量、摸索苦丁茶皂苷元的提取工艺参数并确定苦丁茶皂苷元薄层层析的溶剂体系。

After chemistry and ~1H-NMR,~(13)C-NMR、GC-MR、UV, IR Spectral analysis instrument synthesis appraisal compoundⅠ,Ⅱ,ⅢRespectively isβ-Sitosterol, oleanolic acid , ursolic acid; compoundⅣ,The structure is being appraised. CompoundⅠand compoundⅢare discovered for the first time from Radix Rosa davurica pall. Through pharmacognosy research and the chemical composition carries on the system to the root of Rosa davurica pall.

经化学及~1H-NMR、~(13)C-NMR、GC-MR、UV、IR等光谱分析仪器综合鉴定化合物Ⅰ、Ⅱ、Ⅲ分别为β-谷甾醇、齐墩果酸、熊果酸，其中化合物Ⅰ和化合物Ⅲ为首次从山刺枚根中发现。

Compound 9 is glycosylated in the presence of TMSOTf with rhamose-derived trichloroacetimidates to provide target trisaccharide Saponin 1, oleanolic acid 3-yl-2,4-di-O-a-L-rhamnopyranosyl -p-D-glucopyranosideCoumpond 18 is prepared with oleanic acid and Bromide 11 through phase-thansfer catalysis glycosylation manner.

三糖皂苷Saponin 1是以葡萄糖齐墩果酸皂苷为起始原料，用BBTZ(1-苯甲酰苯并噻唑)选择性保护葡萄糖3′，6′-羟基得到化合物9，然后以化合物9为糖基受体，进行一步糖苷化可以在化合物9的2′，4′-羟基上同时引入两分子鼠李糖，最后脱掉所有的保护基得到目标化合物Saponin1。

Objective The contents of ursolic acid and oleanolic acid in Callicarpa kwangtungenesis Chun was determined by RP - HPLC.

目的采用RP-HPLC法同时测定广东紫珠中熊果酸、齐墩果酸的含量。

The contents of ursolic acid and oleanolic acid in Plantago asiatica L. was determined by HPLC.

采用HPLC法同时测定车前草中熊果酸、齐墩果酸的含量。

objective:to make a comparative analysis of the total saponins content in polygalaceae phloem and xylem parts to guide clinical treatment.methods:we determined the polygalaceae total saponins content at the 575 nm with oleanolic acid as a reference substance and vanillin-perchoric acid as a developer by using uv-visible spectrophotometry.results:the total saponins content of xylem parts was 3.33%,and that of polygalaceae phloem was 0.69%.conclusion:the total saponins content in polygalaceae xylem parts is much more than that of phloem parts,the total saponins in polygalaceae mainly exists in xylem parts.

目的：对远志原药材木部及皮部中总皂苷含量进行比较分析，用以指导临床用药。方法：以齐墩果酸为对照品，香草醛－高氯酸为显色剂，采用紫外－可见分光光度法在575 nm处测定远志总皂苷含量。结果：以此方法对远志木部及皮部中总皂苷含量进行比较、分析，为远志皮部总皂苷含量为3.33 %、木部总皂苷含量为0.69 %。结论：远志中皮部总皂苷含量远远大于木部，远志总皂苷主要存在于根皮中。

ObjectiveTo develop an HPLC method for determination of ursolic acid and oleanolic acid in sanguisorba officinalis L.

目的建立地榆药材中乌索酸和齐墩果酸含量的测定方法。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。