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氢黄酮醇类化合。

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腈类化合。

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

优化结构、寻找新的鬼臼毒素类化合资源替代品,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.

论述了乙烯基醚类化合的三种主要制备方法乙炔法、脱卤化氢法和分解法。

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开发及生产进展,括甲酮类、氯代甲酯类、异氰酸酯类、酰氯类、碳酸酯类化合。

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

并呋喃(DF)是研究英类化合生降解的模式化合之一。

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

许多异恶唑衍生显示良好的生活性，并被开发成为农用化学品和医用化学品。本文对这类化合的研究开发动态进行了概述。

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

然后以三乙胺为缚酸剂，使高聚氯化磷腈直接与酚类化合进行取代反应，合成了标题高聚。

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

另外，利用十种酚类化合为标准品，测定不同生长期与季节之狼尾草中的酚类化合之变化。

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类化合。

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、碱催化下的氧化合反应,是合成乙烯(烷)类化合的重要途径.

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.

柠檬苦素类化合在抗癌、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3，14，16为模板，对它们的3位羧基进行了酯化反应合成了4个喹诺酮酯类化合：化合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中所分离得到的瑞香烷型萜类化合有不同之处。

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.

摘要链状冠醚芳在酸性条件下与氨基硫脲反应，合成了链状冠醚芳氨硫脲类化合。

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,邻硝基胺与1,2-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代喹喔啉类化合的方法。

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酸酯及叠氮磷酰胺类化合，并用IR、1HNMR、FAB-MS及元素分析对化合结构进行了鉴定。

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.

并吡喃类化合及其衍生是一大类天然产,很多都都具有生活性,并吡喃天然产1#在1986年被分离得到。