酚

Since the relative antioxidant capacity of all the phenolic compounds was much higher than trolox in both assays, it is a good indication that phenolic compounds possess high antioxidation capacity against peroxy radicals.

由於酚类物质之相对抗氧化力均远高於trolox，表示酚类物质对过氧自由基具有很好的抗氧化效果。

In the presence of O〓, peroxyl radicals formed under neutral condition are either directly oxidized to non-aromatic acids, or forms aromatic intermediates, which are further oxidized to non-aromatic acids; peroxyl radicals formed under alkaline conditions are directly oxidized to non-aromatic acids.

有氧状态下的羟基自由基氧化体系中，过氧自由基在氧气的催化作用下既可开环形成有机酸，也可形成4-氯邻苯二酚和对苯二酚，进而氧化开环成有机酸，并最终矿化；碱性条件下的过氧自由基则直接开环降解。

50 g/L propofol has the pharmacodynamic effect similar to that of 10 g/L propofol, but the former can delay the occurrence of serum lipid metabolism.

我们的实验是比较50 g/L异丙酚与现在临床上应用的10 g/L异丙酚在药效学上的差异及其对家兔脂代谢的影响。

50 g/L propofol has the pharmacodynamic effect similar to that of 10 g/L propofol, but the former can delay the occurrence of serum lipid metabolism.

50 g/L异丙酚与10 g/L异丙酚的药效相似，但能延缓脂代谢紊乱的发生时间。

On the basis of spectroscopic analysis and comparison with the reported data, they were identified as kaempferol-3-O-β-D-glucoside, kaempferol 3-O-β-D-6-p-hydroxycoumaroylglucoside, L-2-O-methyl chiro-insitol and phillyrin.

叶的95%乙醇提取物中分离得到了4个化合物，经波谱分析，其结构分别鉴定为山萘酚－3-O-β-D-葡萄糖苷、山萘酚－3-β-D-（6-对羟基桂皮酰基）葡萄糖苷、L-2-O-甲基－手－肌醇和连翘苷。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

对黄烷醇化合物的立体选择性全合成进行了探索：以间苯三酚和2，4，6-三羟基苯乙酮为原料，尝试用两条路线对Distenin化合物进行了全合成研究；以对苯二酚为原料，经三步制得2，5-二甲氧甲氧基苯乙酮，与2，4，6-三甲氧甲氧基苯甲醛反应，经四步反应得到天然产物3，5，7，2′，5′-二五羟基黄烷关键中间体1-（2′，6′-二甲氧甲氧基苯）-3-（2&，4&，6-三甲氧甲氧基苯）丙烷-1R，2R-二醇83及其对映体84；简要介绍了EGCg类化合物的生物活性和研究概况。

A series of novel polys: poly, poly and their copolymer poly were synthesized at high temperature by nucleophilic polycondensation of bisphenol 4 (3 phenyl 4 hydroxyphenyl) 2,3 phthalazin 1 one with activated difluorodiphenylketone, dichlorodiphenylsulfone and both together.

将苯基取代类双酚化合物 4-(3 -苯基-4-羟基苯基)-2 ，3 -二氮杂萘-1 -酮与活性双卤单体如 4，4 -二氟二苯酮、4，4 -二氯二苯砜进行高温缩聚反应，合成了高分子量的新型苯基取代杂萘联苯型聚芳醚材料；用1 H NMR、FT-IR表征了类双酚单体及聚合物的结构。

Objective: To investigate the effect of protecting liver of brevifolin and 8,9-single-epoxy brevifolin of Phyllanthus simplex .

中文摘要：目的：探讨黄珠子草有效成分短叶苏木酚及8，9-单环氧短叶苏木酚保肝作用及机制。

Acetone-water at 60℃water bath for 60min and solid to liquid ratio 1:50 for twice. 2.Through the optimal method analysis phenol content in leave,phloem and xylem from the different breeds of Pistacia vera L.

应用阿月浑子总酚最佳的提取工艺条件对不同生长时期阿月浑子和黄连木不同品种的叶片、韧皮部、木质部中的总酚含量动态变化进行分析。

Based on the leave of Pistacia vera L..Qualitative and quantitative analysis of phenol from Pistacia vera L. and effect on cell ultrastructure of Pistacia vera L tissue.The extracting technology phenol content from Pistacia vera L.

本文以阿月浑子植株与外植体为材料，采用化学方法与色谱-质谱方法对阿月浑子中总酚以及酚类物质成分进行了定性和定量分析，并用透射电镜观察了外植体褐变的发生对细胞超微结构的影响。

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。