羟基酸

On the optimum condition ,the maximum yield of 84.45% was obtained.

对3-乙氧基-4-羟基扁桃酸在铂电极上的电氧化进行了研究。

That is, the biological efficacy of liquid methionine hydroxy analogue is only 65% in pig.

因此，液体蛋氨酸羟基类似物对猪的生物学效价只有65%。

A new method was studied for determination of barium molybdate by 8-hydroxyquinoline gravimetric method .

研究了采用8-羟基喹啉重量法测定钼酸钡。

Methods: In this paper, a quinazoline purine analogues for the parent nucleus, respectively, and four of its seven introduced to replace the structure of diverse and flexible side-chain amino-benzene, design a series of 4 - to replace the aniline-based -6 - methoxy --7 -(2 - hydroxy replace C oxy) quinazoline compounds.

目的：通过各种化学合成方法完成目标化合物4--6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉的合成并对目标化合物进行结构修饰，以期获得高活性的表皮生长因子受体酪氨酸激酶抑制剂。

Hydroxylcarveol(3) and its ester derivatives were synthesized from α-pinene(1), and their structures had been identified by IR, MS, 1H NMR and 13C NMR analysis.

以α-蒎烯(1)为原料，合成了8-羟基别二氢葛缕醇(3)及其甲酸酯(4)、乙酸酯(5)和丙酸酯(6)，并用IR、MS、1H NMR及13C NMR分析对它们的结构进行了表征。

By using a mixture of aromatic hydrocarbon and water as a binary solvent,reaction of pyrogallol with PhCCl 3 was carried out in the presence of a catalyst(ZnCl 2?AlCl 3 or SOCl 2).2,3,4-Trihydroxybenzophenone was obtained in yields of 80%-87% with the advantages of easy control,stable yield,high product quality and low cost.

以焦性没食子酸为起始原料，在惰性气体保护和催化剂(ZnCl2、AlCl3或SOCl2)的存在下，在芳香烃与水组成的二元混合溶剂中，与三氯甲苯反应，经过芳香烃溶剂的后处理，可以得到2，3，4-三羟基二苯酮，产率最高达87%。

Objective: through various chemical synthesis target compounds 4 -- 6 - the - 7 -(2 - hydroxyl replace c oxygen radicals) quinazoline compounds were synthesized and the structure of the modified, so as to get high epidermal growth factor receptor tyrosine kinase inhibitor.

目的：通过各种化学合成方法完成目标化合物4--6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉的合成并对目标化合物进行结构修饰，以期获得高活性的表皮生长因子受体酪氨酸激酶抑制剂。

The article is summarized as follows to its namely. 1 manage changes property Tekturna piece in advocate composition A Li Kelun exists with the form of acerbity salt of half rich horse, chemical name is (2S, 4S, 5S, acyl of 7S)-N-(2- amino armour base - 2- methylic propyl)- 5- amino - 4- hydroxyl - 2, 2 different of 7- propyl - 8-4- armour oxygen - 3-3- armour...

本文即对其概述如下。1理化性质Tekturna片中主成分阿利克仑以半富马酸盐的形式存在，化学名为(2S，4S，5S，7S)-N-(2-氨基甲酰基-2-甲基丙基)-5-氨基-4-羟基-2，7-二异丙基-8-4-甲氧-3-3-甲。。。

Results show that the antibacterial component belongs to volatile oil、sesquiterpene、phenols and organic acids. The antibacterial part of the broth was isolated by silica gel column and 6 fractions of obviously antibacterial activity were obtained .By further study Fractions 1、2、3 contain sesquiterpene and fractions 8、9 contain phenols and fraction 10 contains phenolic organic acid.

对发酵液抑菌成分的研究表明，抑菌活性成分组成为挥发油倍半萜、酚和有机酸等类化合物，采用硅胶柱层析对发酵液抑菌活性部位进行分离实验，得到了6个具有明显抑菌活性的粗组分（组分1、2、3、8、9、10），其中组分1、2、3含有倍半萜类物质，组分8、9含有酚类物质，组分10中有含酚羟基的羧酸类物质。

D-p-hydroxyphenylglycine is one of the important side chain in the semi-synthetic-lactam antibiotic molecules widely clinically used in the world.

D-对羟基苯甘氨酸(D-p-hydroxyphenylglycine，D-HPG)是临床上广泛使用的半合成β-内酰胺类抗生素的重要结构部分。

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。