氧化合物

The longer fluorinatd alkyl chain on the three-ring was advantageous to the formation of smectic phase. The mesogens with chiral center located between fluorinated tail and mesogenic core exhibited chiral smectic C phase and other smectic phases when the alkoxyl adhering to the other side of the mesogenic core was of intermediate length.

三环系液晶化合物中较长的氟烷基边链有利于近晶相的形成，且当液晶核另一端的烷氧基链的长度适中时，在氟烷基边链和液晶核之间具有手性中心的液晶分子显示了手性近晶C相和其它液晶相。

METHODSThe compounds were prepared by using 2ethylpyridine, through the Whol Ziegler reaction, the Williamson reaction and aminolysis. The effects for ability of memory in mice were measured by swimming maze test.

方法］以2乙基吡啶为原料，经WholZiegler反应、Williamson反应及氨解反应得到2［1（2吡啶）乙氧基］乙酰4取代哌嗪，采用水迷宫法观察所合成的化合物对小鼠记忆力的影响。

2-Substituted-3,4-dihydro-1(2H)-isoquinolinones were synthesized from methyl 3-hydroxy-ben- zoates via allyl etherification, Claisen rearrangement, oxidation, reductive amination and aminolysis for the first time.

以3-羟基-4-甲氧基苯甲酸甲酯等为原料，通过烯丙基醚化、Claisen重排、氧化、与伯胺反应、还原、分子内酯的胺解六步反应合成了一系列2-取代-3，4-二氢-1-异喹啉酮类化合物。

Reaction (1) was examined with different kinds of acetal substrate(1) and vinyl ethyl ether, and the results indicated that the 1, 1,3-triethoxy compounds could be obtained in high yields of 88 and 97% respectively when the R groups of the acetal are phenyl and anisyl, while the yields amounted only to 55-75 % for R=a...

有证据表明这种催化反应也可能是通过正碳离子中间体进行的。本反应的产物1，1，3-三乙氧基化合物经乙酸/乙酸钠溶液水解可得反式α，β-不饱和醛。水解产率：芳香族产物大于90%，脂肪族产物大于75%。

Aniline compounds are used as raw material and reacted with anthranilic acid and then phenyl iodide as alkylating agents to give alkylating products followed by cyclizing with concentrated sulphuric acid to give a N-phenyl-acridone(or 3-ethoxyl-N-phenylacridone).The structure of intermediate and target compound are determined by IR and MS.

以苯胺类化合物为原料，先后以邻氯苯甲酸和碘苯为烷基化试剂进行了N 烷基化反应，再用浓硫酸使其环化制得N-苯基吖啶酮和3-乙氧基-N-苯基吖啶酮，并用红外光谱及质谱仪检测了各中间体及目标产物的结构。

Result: Five flavonoids and two coumarins were isolated from Phellinus igniarius and their structures were identified as naringenin, sakuranetin, aromadendrin, folerogenin, eriodictyol, coumarin and scopoletin.

结果 ：从桑黄中分离鉴定了 5个黄酮和两个香豆素类化合物，分别为柚皮素、樱花亭、二氢莰非素、7 甲氧基二氢莰非素、北美圣草素、香豆素及莨菪亭。

Molecular geometry,atomic net charge,constituents and energy of the frontier molecular orbital for eight alkylated arylamine anti-oxidant and anti-corrosive additive s have been calculated by density functional theoryat the 6-31G~* basis set level.

采用量子化学方法，在B3LYP/6-31G~*水平上对8种烷基化芳胺抗氧抗腐添加剂的平衡几何构型、净电荷及前线轨道组成和能级等进行了理论计算研究，探讨了这些化合物的结构特征。

The detailed mechanisms of the electron transfer reactions of common coenzyme NADH model compounds were systematically investigated using o-allyloxy benzenediazonium salt as the probe.

应用邻位烯丙氧基取代的芳基重氮盐作为探针，对辅酶NADH几种最常用的模型化合物电子转移反应的过程和机理进行了比较系统的考察。

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

Based on the synthesis method and the function of decreasing blood glucose levels of rosiglitazone, and the report on benzoquinones which resulted in a significant decrease in blood glucose levels, a novel non-thiazolidinedione class of PPARy agonist 2, 5-Dihydroxy-3-{4-[2-(methyl- pyridin-2- yl-amino)- ethoxy] -phenyl}-6-phenyl-[l, 4] benzoquinone (4) was designed and synthesized.

在合成罗格列酮的基础上，根据某些醌类结构化合物的类似胰岛素作用，设计并合成了一种非噻唑烷二酮类PPARγ激动剂2，5-二羟基3-{4-[2-(甲基-2-吡啶氨基)-乙氧基]-苯基}-6-苯基-1，4苯醌(4)。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！