优选栀子总环烯醚萜苷的提取工艺路线。
The objective of the study is to optimize the process for extraction technology of total iridoid glycoside of Cape Jasmine Fruit.
该科植物主要含三萜皂苷、环烯醚萜苷、黄酮、挥发油等类型的化合物。
The main chemical constituents from dipsacaceae species were triterpenoid saponins, iridoidal glycosides, flavonoids, essential oils, etc.
本工艺程序提供了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
The process provides a facile way of producing hydrocarbyl perchlorates, from alkenes, cycloalkenes, aralkenes, alkanols, cycloalkenes and aralkanols .
关环转换反应是形成碳碳双键的重要反应之一，即双烯化合物在金属碳烯催化下关环得到环烯类化合物。
Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.
研究了烷基苯基硅铜酸盐与2-环烯酮的1，4-加成反应的立体选择性，并合成了一系列新的2-取代-3-硅基环烷酮。
The stereoselectivity of 1,4-addition of dialkylphenylsilyl cuprates to 2-cycloenones was investigated and meantime a series of new 2-substituted-3-silylcycloalkanones were synthesized.
通过对原材料进行研究，筛选出杜仲鲜皮为提取环烯醚萜化合物京尼平甙酸（GPA）、桃叶珊瑚甙（AU）和京尼平甙（GP）的原料；
Base on the choice of various raw materials, fresh bark was chosen to extract Iridoids compounds such as geniposidic acid (GPA), aucubin (AU) and geniposide (GP).
对山茱芡环烯醚菇总普和总三菇酸部分，用大鼠、小鼠糖尿病模型进行了降糖作用的药理实验，结果表明，二部分单用均有降糖作用，但合用效果更明显。
The pharmacological results revealed that both the active parts of iridoids and triterpenes acid had effects on decreasing blood glucose, though the joint use showed the better results.
这一令人鼓舞的消息源于这样一个发现：较低的白蜡树枯梢病易感性与较低水平的植物化学物质“环烯醚萜苷类”(iridoid glycosides)之间存在关联。
The encouraging news comes from the discovery of a link between reduced susceptibility to ash dieback and lower levels of plant chemicals called iridoid glycosides.
中离子碳烯类似于氮杂环碳烯。
二氧化双环戊二烯难于被胺或单独的酸酐所固化，但能很好的被酸酐与醇所固化。
Dicyclopentadiene dioxide was hardly cured by amines or acid anhydrides alone, but can be well cured by acid anhydrides mixed with alcohols.
而不同的石墨烯面之间存在的表面能可以通过在晶界处形成空位或者位错环而得到降低。
The interface energy that exists between the sheets could be minimized by the grain boundaries by the formation of dislocations or pairs of rings.
探讨了双环戊二烯改性不饱和聚酯树脂的各种影响因素及其合成的主要工艺条件。
The various influencing factors and main synthesis processes of dicyclopentadiene modified unsaturated polyester resin are investigated.
既然富烯不显示环电流存在的迹象，所以质子的化学位移仍然发生在正常的链烯区。
Since fulvenes show no evidence of ring currents, the chemical shifts of the protons will be found in the normal definite region.
研究了水相悬浮法合成环氧化反式-1，4-聚异戊二烯（ETPI）的结构与性能。
Structure and property of epoxidized trans-1,4-polyisoprene(ETPI) by water phase suspension method was studied.
用二环戊二烯，顺丁烯二酸和乙二醇合成不饱和聚酯，这种不饱和聚酯既可浇铸，也可以在空气中固化。
An unsaturated polyester resin was synthesized from dicyclopentadiene, maleic acid and ethylene glycol. This resin can be moulded by casting and also can be hardened in air.
用二环戊二烯，顺丁烯二酸和乙二醇合成不饱和聚酯，这种不饱和聚酯既可浇铸，也可以在空气中固化。
An unsaturated polyester resin was synthesized from dicyclopentadiene maleic acid and ethylene glycol. this resin can be moulded by casting and also can be hardened in air.
重点介绍了金属茂的合成方法及环戊二烯环上的取代基、溶剂对合成及分离旋光性金属茂的影响。
The synthesis of metallocene, the effects of substitution in cyclopentadiene ring, reaction medium for synthesis and separation of chiral metallocene have been highlighted.
本论文研究了铱催化的喹啉和吡啶衍生物以及环外烯胺的不对称氢化。
In this dissertation, Ir-catalyzed asymmetric hydrogenation of quinoline derivatives, pyridine derivatives and exocyclic enamines have been studied.
本文用半缩聚法合成双环戊二烯型不饱和聚酯树脂。
DCPD type unsaturated polyester resin prepared by using semi condensation polymerization method is proposed.
研究了在超声波辐照作用下聚丁二烯（PB）在环已烷溶液中的降解及与丙烯酸（AA）的共疑反应。
The ultrasonic degradation of polybutadiene (PB) and block copolymerization of PB with acrylic acid(AA)in cyclohexane solution were studied.
综述了双桥连二环戊二烯基金属有机化合物的研究进展。
The progress on the study of doubly bridged bis(cyclopentadienyl) metal complexes is reviewed.
前者是塑料的普通成分，后者则是研究者的专利秘密，可使二环戊二烯变硬。
The material relies on two substances: liquid dicyclopentadiene, a common ingredient of plastics, and a catalyst (the researchers 'proprietary secret) that causes dicyclopentadiene to harden.
介绍了用一步法、两步法合成甲基环戊二烯三羰基锰的过程，影响收率的主要因素。
The one step and the two steps used in the synthesis of MMT and their advantage and shortcoming are described.
首先探讨了丁二烯的环三齐聚反应机理，并对其生成物的利用现状做了分析。
This article studies the reaction-mechanism of oligomerization of butadiene and the situation of reaction product utilization.
甲基环戊二烯三羰基锰（MMT）对机动车排放及排放控制系统的影响一直是人们争论的焦点。
The effects of methylcyclopentadienyl manganese tricarbonyl(MMT) fuel additive on emission and emission control system of vehicles have ever been the focus of dispute.
公司的主要产品有C5石油树脂、双环戊二烯、均三甲苯等，可广泛地用于涂料、胶粘剂、医药中间体、油漆、油墨等产品的生产。
Our main products include C5 petroleum resin, dicyclopentadiene, and mesitylene which are widely used in industries of coating, adhesives, pharmaceutical intermediate, paint, and ink etc.
在第二章中，通过理论计算对金催化的溴代连二烯酮环异构化反应的机理进行了研究和讨论。
In the second chapter, the mechanism of the gold-catalyzed cycloisomerization of bromoallenyl ketone was investigated and discussed.
在第二章中，通过理论计算对金催化的溴代连二烯酮环异构化反应的机理进行了研究和讨论。
In the second chapter, the mechanism of the gold-catalyzed cycloisomerization of bromoallenyl ketone was investigated and discussed.
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