类化

Objective To separate flavonol and flavanonol by the column chromatography of polyamide.

目的采用聚酰胺柱色谱分离黄酮醇与二氢黄酮醇化合物。

Three novel malononitrile derivatives have been synthesized by the solid state reaction at room temperature.

固相反应合成了新型丙二腈化合物。

Continued research on the Podophyllum lignans is currently focused on structure optimization to generate deriv...

优化结构、寻找新的鬼臼毒素化合物资源替品,已成为当前进一步研究的主要方向。

This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.

论述了乙烯基醚化合物的三种主要制备方法乙炔法、脱卤化氢法和缩醛热分解法。

This paper reviews the research and development of phosgene Derivates,including diphenyl ketone,chlorocarbonate,isocya-nate,acyl chloride and carbonates.

本文综述了光气下游精细化学品的生产进展,包括二苯甲酮、氯甲、异氰、酰氯、碳化合物。

Dibenzofuran(DF) is one of the model compounds for the study of biodegradation of dioxin-like pollutants.

二苯并呋喃(DF)是研究二英化合物生物降解的模式化合物之一。

In this gaper, the developments md study on biologically activeisoxazole derivatives and their applications in pesticide and medicine were reviewed.

许多异恶唑衍生物显示良好的生物活性，并被成为农用化学品和医用化学品。本文对这化合物的研究动态进行了概述。

In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.

然后以三乙胺为缚剂，使高聚氯化磷腈直接与酚化合物进行取反应，合成了标题高聚物。

The standards of polyphenols were used to identify the phenolic compounds in napiergrass and their changes due to growth period and season.

另外，利用十种酚化合物为标准品，测定不同生长期与季节之狼尾草中的酚化合物之变化。

This thesis mainly introduced that ureas and semicarbazides were synthesized by oxidation of corresponding thioureas and thiosemicarbazides using 30% peroxide as oxidant.

本文主要介绍了以30%浓度的双氧水作为氧化剂氧化硫脲、氨基硫脲来制备相应的脲和氨基脲化合物。

The oxidative dimerization of aryl methanes in organic solvents by using alkaline catalysts is an important way to prepare diphenyl ethanes and diphenyl ethylenes.

芳基甲烷在有机溶剂介质中、碱催化下的氧化缩合反应,是合成二苯乙烯(烷)化合物的重要途径.

More and more attention is being paid to their functions in anti-cancer, analgesia, regulating cholesterol level in the human body，preventing atheroma，deinsectization and other aspects.

柠檬苦素化合物在抗癌、镇痛、调节体内胆固醇水平、防止动脉粥样化和除虫等方面的作用，越来越受到人们的重视。

Finally, we gained four esterifiable quinolone analogues (compounds 22 to 25) by modifying the structures of compound 3, 14 and 16 on 3 position.

同时利用所合成的化合物3，14，16为模板，对它们的3位羧基进行了化反应合成了4个喹诺酮化合物：化合物22—25。

The structure of neostellerin, which was elucidated by NMR, especially 2D NMR analysis, was different from other daphnane type diterpenes isolated from this plant.

其中新狼毒素与其它从该种植物中所分离得到的瑞香烷型二萜化合物有不同之处。

Under acid condition open chaining crown ether diaromatic aldehyde can react, and they will synthesize a compound of chaining crown ether diaromatic aldehyde thiosemi-carbazone kind.

摘要链状冠醚二芳醛在性条件下与氨基硫脲反应，合成了链状冠醚二芳醛缩氨硫脲化合物。

Aqueous titanium trichloride promoted intermolecular reductive cyclization of 1,2 -diketone and o-nitroaniline in basic media provides a convenient method for the synthesis of quinoxaline derivatives.

本文研究了三氯化钛水溶液作用下,邻硝基苯胺与1,2-二酮在碱性介质中分子间的成环反应,提供了一个方便地合成取喹喔啉化合物的方法。

Four compounds of phosphite ester and phosphoramide containing azido groups were synthesized. The molecular structure of the products has been confirmed by IR，1HNMR，FAB-MS and elemental analysis.

首次合成了叠氮亚磷叠氮磷酰胺化合物，并用IR、1HNMR、FAB-MS元素分析对化合物结构进行了鉴定。

Chromene and its derivatives are a large class of natural product.A lot of Chromene and its derivatives have biological activity.A natural chromene was separated in 1986.

苯并吡喃化合物其衍生物是一大天然产物,很多都都具有生物活性,苯并吡喃天然产物1#在1986年被分离得到。