羟基酮

The diazotization condition of 4-methyl-1-ethyl-3-cyano-5amino-6-hydroxy-2-pyridone and coupling condition of its diazo salt were researched, and the structure of its diazo salt was confirmed.

研究了4-甲基-1-乙基-3-氰基-5-氨基-6-羟基-2-吡啶酮的重氮化反应及其重氮盐发生偶合反应的条件，确定了重氮盐的结构。

Quercetin(3,5,7,3",4"-pentahydroxyflavone) is a kind of effective component from natural druggery, which has many pharmacological actions such as anti-flammatory, antiviral and antioxidation.

槲皮素(quercetin， 3，5，7， 3"，4"五羟基黄酮)有抗炎、抗病毒、抗氧化等多种药理作用，但其抗氧化活性较弱。

The efficient first asymmetric syntheses of-6β-hydroxy-7αH-eudesm-4-en-3-one, and its C-6 epimer were achieved starting from-dihydrocarvone, whichprovide a novel and efficient synthetic method to 6-oxgenated eudesmanes.

以-二氢香芹酮为原料，经五步反应，首次完成了6β-羟基-4(5)-烯-3-羰基桉烷及其6位差向异构体的立体选择合成，并为C-6位含氧官能团取代桉烷类化合物的合成提供了一种简便有效的方法。

The activity of pyruvate formate-lyase and pyruvate dehydrogenase accounts for the observed production of formate, acetate, ethanol and acetoin. In 1978, Hillman isolated one of the mutants of Streptococcus mutans which lack the enzyme activity of dehydrogenase.

当外源性糖丰富的时候，果糖-1，6-二磷酸增加，使LDH活化，90%以上的葡萄糖被转化为乳酸；外源性糖供应不足时，通过丙酮酸甲酸裂解酶和丙酮酸脱氢酶作用产生甲酸、乙酸、3-羟基丁酮和乙醇。

Orange in the flavonoids in the intestine into hydroxy benzoic acid and ferulic acid, which can strengthen the role of thyroid suppression thiocyanate, which induce or cause goiter.

橙色的黄酮类化合物在肠道成羟基苯甲酸和阿魏酸，可加强硫氰酸抑制甲状腺，而诱发或导致甲状腺肿大的作用。

Objective To observed the effects of 5 hydroxyl group of genistein on recombinant human protein kinase CK2 holoenzyme activity.

目的 观察染料木黄酮C5位上的羟基对其抑制重组人蛋白激酶CK2全酶活性的影响。

Lutein and zeaxanthin are both dihydroxy-carotenoids with the ionone ring systems distributed widely in nature.

叶黄素和玉米黄质是含紫罗酮环的二羟基类胡萝卜素，在自然界广泛存在。

Lutein is dihydroxy-carotenoids with the ionone ring systems distributed widely in nature as well as the main component of the retina macular pigment in human eye.

叶黄素是自然界广泛存在的含紫罗酮环的二羟基类胡萝卜素，也是人眼视网膜黄斑色素主要组成部分。

Odoquinazolin-4(3H)-one,7-methyl-4(3H)-quinazolinone,7-bromoquinazolin-4(3H)-one were synthesized by using anthranilic acid、2-amino-5-nitrobenzoic acid、2-amino-4-nitrobenzoic acid,6-nitro--4(3H)-quinazoline-one、o-amino-terephthalic acid, 2-amino-4-hydroxy benzoic acid、2-amino-5-bromo-benzoic acid、2-amino-5-iodine acid,1、4-butynediol、L-glutamine、isatin anhydride、formamide as starting materials and utilizing microwave-assisted synthetic approach.

本文利用微波辅助合成的方法，以邻氨基苯甲酸、2-氨基-5-硝基苯甲酸、2-氨基-4-硝基苯甲酸、邻氨基对苯二甲酸、2-氨基-4-羟基苯甲酸、2-氨基-5-溴苯甲酸、2-氨基-5-碘苯甲酸、5-甲基-2-氨基苯甲酸等为原料与甲酰胺反应，以及以1，4-丁炔二醇、L-谷氨酰胺与靛红酸酐反应，共合成了13个喹唑啉酮衍生。。。

Hydroxyl ketene dithioacetals were treated under diversely catalyzed conditions, and a wide range of significant compounds and synthetic precursors thus were obtained.

羟基二硫缩烯酮类化合物可以通过各种不同的反应条件进行多种转化，能够获得许多有意义的化合物和合成潜体。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。