查询词典 quinone-imine

The macro conjugated molecule fluorene derivative has 2, 3, 6, 7-tetraamino-9, 9'-dialkyl fluorene as a raw material which is added to an organic solvent respectively together with phenanthrenequinone, acenaphthene quinone or bis-carbonyl pyrene derivatives and strong base; under the protection of inert gas, reflux reaction is carried out to the materials, so as to prepare a series of trapezoidal conjugated molecules containing fluorine structures.

本发明涉及一类含大共轭分子的芴衍生物及其制备方法，大共轭分子芴衍生物是将原料2，3，6，7-四氨基-9，9'-二烷基芴，分别与菲醌、苊醌或二羰基芘的衍生物以及强碱加入到有机溶剂中，在惰性气体的保护下，回流反应制得一系列含有芴结构的梯形共轭分子。

Enzyme quinone reductase protects against quinone-induced toxicity and has been used as a marker in cancer chemoprevention studies.

解毒酶醌还原酶可防止醌诱导毒性，并已用作癌化学预防的研究。

The detoxification enzyme quinone reductase protects against quinone-induced toxicity and has been used as a marker in cancer chemoprevention studies.

解毒酶醌还原酶可防止醌诱导毒性，并已用作癌化学预防的研究。

The results of orthogonal test showed that the optimum extraction processof quinone from C. cathayensis peel was 70% ethanol as extraction solvent with solid-liquid ratio of 1: 15, extraction temperature of 60℃ and extraction time of 2 h. Under this condition, the yield rate of total quinone reached 0.84%.

正交试验结果表明，山核桃果皮醌的最佳提取工艺为：70%乙醇为提取剂，料液比1： 15，提取温度60℃，提取时间2 h，此条件下，总醌得率达0.84%。

These two series of probes differ in their mechanism of action. The first series exploits the concept of suicide substrate. When the probe is hydrolyzed by the target sulfatase, it will release an intermediate that undergoes elimination to form a reactive quinone methide which in turn reacts with nearby nucleophiles. The second series belongs to an electrophilic reagent which utilizes a cyclic sulfamate moiety serving both as the recognition unit and the trapping device.

这二系列标示分子的主要差异在於其标示机制，第一系列是源自於自杀性受质的概念，利用水解后的中间体会生成高反应性的quinone methide，来达到标示的效果；第二系列则是属於亲核性试剂型，采用环状胺基磺酸衍生物做为辨识端及捕捉机制，预期在其进入酵素的受质结合区后能与酵素催化中心形成共价键结。

Quinone methides, generated in situ from the reaction of 4-hydroxycoumarin with benzaldehyde, formaldehyde and pentanal, underwent the Diels-Alder reaction with silyl enol ethers to give a series of 3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran derivatives in high yields.

通过4-羟基香豆素与苯甲醛、甲醛和戊醛缩合产生的quinone methide与烯醇硅醚的Diels-Alder反应，以较高产率合成了一系列含有硅氧基的3，4-二氢-2H，5H-吡喃并[3，2-c][1]苯并吡喃-5-酮衍生物。

Furthermore, Davallia mariesii, Drynaria fortunei and Araiostegia parvipinnata had better inhibitive capability in the production of p-quinone from 6-OHDA.

接著，进行6-OHDA自我氧化产生p-quinone的清除能力试验，结果显示海州骨碎补、槲蕨具有较佳的清除效果。

This product is the main ingredient of the drug salvia for the fat-soluble quinone-type diterpene of phenolic acids and water-soluble components, have cardiovascular aspects of the pharmacological effects, in recent years, studies show that water-yong Danshensu components of the lunwen114expansion of the heart Cerebro-vascular, anti-platelet aggregation, the removal of oxygen free radicals, such as the role of a quinone-type diterpene of tanshinone stronger, and water-soluble components of anti-myocardial ischemia is the main ingredient.

本品的主药丹参的有效成分为脂溶性的二萜醌类和水溶性的酚酸类成分，均具有心血管方面的药理作用，近年来研究表明水镕性成分丹参素的扩张心脑血管，抗血小板聚集，清除氧自由基等作用较二萜醌类的丹参酮更强，且水溶性成分是抗心肌缺血的主要成分。

This o-quinone could isomerize to p-quinone methylene compound at low scan rates. The C3 hydroxyl group at ring C oxidized next was shown to undergo an irreversible oxidation reaction. This oxidation became the main oxidation peak during the following cyclic potential scans, due to an especial product-absorption mechanism.

在电势扫描速度较慢时该邻醌可异构化为对醌亚甲基化物。C环C_3羟基在稍高的电位发生不可逆的氧化过程，并且在后续的循环扫描过程中通过独特的产物吸附机理而成为主氧化峰。

A quinone-hydroquinone-bridged ladderlike polyorganosiloxane was synthesized successfully by quinone-hydroquinone charge transfer interaction self-assembling template.

利用醌-氢醌电荷转移相互作用为模板合成了醌-氢醌交替的有机桥基梯形聚有机硅氧烷。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。