没食子酸

In an acetate buffer medium of pH 6.6, a colored complex was formed between pentavalent vanadium ion and pyrogallic acid.

于pH 6.6的乙酸盐缓冲溶液中，五价钒离子与焦性没食子酸反应生成有色络合物。

Aldol condensation 2, 5-dimethoxymethoxyacetophone with 2, 4, 6 -tri methoxymethoxybenzendehyde, then hydrogenation, reductive, the key intermediate 83 (84) of natural product 3, 5, 7, 2′, 5′- pentahydroxyflavan, was obtained; Mini reviewed EGCg activity, Then gallic acid and phloroglucin were used to synthsis EGCg, The key intermediate Chalcone 109 of EGCg was abtained through 7 steps from gallic acid.

重点介绍了以没食子酸为原料，经酯化，保护，还原，氧化，格氏反应，氧化六步反应得到3，4，5-三苄氧基苯乙酮，以间苯三酚为原料，经维斯迈尔反应，苄基保护，甲氧甲氧基保护三步反应得到2，4-二苄氧基-6甲氧甲氧基苯甲醛，酮106与醛108经羟醛缩合得到EGCg重要反应中间体查尔酮109。

The invention relates to gene stock of phomopsis bacteria which can produce gallic acid, which belongs to the technical field of the bio-engineering.

一株能产没食子酸的拟茎点霉菌，属于生物工程技术领域。

Novel rod like phenylene thiophene based polyhydroxy amphiphiles, derivatives of gallic acid combining three hydrophilic 2,3-dihydroxypropyloxy groups and one alkyl chain via central aromatic linking units, have been synthesized by using Ni, Pd(0) catalyzed coupling reaction as key steps.

以Ni， Pd (0)催化的C-C偶合反应为关键步骤合成了基于苯联噻吩的棒状型多羟基两亲性分子，它们是以棒状芳香核为中心部分，一端带三重亲水的2，3-二羟基链，另一端为带一条烷基链的没食子酸衍生物。

The conditions for esterifying konjac KGM were optimized and the natural,macromolecular,organic air purificant for adsorbing SO2 and bacteriostasis in air was obtained.

研究结果表明：当采用苯甲酸为魔芋葡甘聚糖酯化改性剂时，改性产物对空气中的SO2吸附效果和抑菌作用效果优于使用醋酸和没食子酸的改性产物。

An UV-spectrophotometry determination method for pyrogallic acid content was studied.

研究了用紫外分光光度法测定焦性没食子酸含量的一种新方法。

The inhibition of sulfite oxidation by pyrogallic acid was investigated in oxygen scavenging and air oxidation experiments.

通过除氧速度和空气氧化速度测定，研究了焦性没食子酸对亚硫酸盐自动氧化的阻滞作用。

A liquid crystal with pyridine group was synthesized from reactants of pyrogallic acid and isonicotinato by esterification reaction.

以焦性没食子酸和异烟酸为原料合成了带吡啶官能团的液晶配体。

The study results indicated that this new method could be used for quantitative determination of pyrogallic acid in production for its simpleness, cheapness, veracity and stability.

研究结果表明，新方法具有操作简便，成本低廉，测定值稳定等特点，适用于焦性没食子酸工业生产的产品含量分析。

An UV-spectrophotometry determination method for pyrogallic acid content was studied.

研究了用紫外分光光度法。定焦性没食子酸含量的一种新方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。