蒽酮
- 与 蒽酮 相关的网络例句 [注:此内容来源于网络,仅供参考]
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There are 65 species of Chinese herbs with confirmed anti-HBV activityd, in which 16 probable active constituents are pointed out. They are arene, ketone derivatives, alicyclic carboxylic acid, aromatic carboxylic acid, ester, lactone, cyanide derivatives, heterocycle derivatives, carotenoids, anthraquinones, flavonoids, vegetable tannin, alkaloid, terpenoids, steroids and protein. Among them, the complexes of flavonoids, terpenoids, steroids and alkaloids are more abundant.
确定了具有抗乙肝病毒活性的中草药品种65种,其中含可能活性成分共16种,即芳烃、酮类衍生物、脂环族羧酸、芳香族羧酸、酯、内酯、氰类衍生物、杂环衍生物、类胡萝卜素、蒽醌类、黄酮类、植物鞣质、生物碱、萜类、甾类和蛋白质,而16种中以黄酮类、萜类、甾类和生物碱类成分为多。
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The pigments synthesized from 2, 7-diaminoflurenone consistently show better photosensitivity than that containing anthraquinone. A plot of the E1/2 values against the Hammett constant σ was obtained for the pigments which have different substituents in the anilide ring. The plot reveals that neither a strong electron-releasing group, such as methoxy, nor a electron-withdrawing group, such as nitro-group, enhances the sensitivity of the photoreceptor in which these pigments are used as CGL materiel.
芴酮类偶氮染料的光敏性优于蒽醌类偶氮染料,其偶合基酰胺芳环取代基为强的给电子基团或强的吸电子基团时都不利于其光敏性的提高,只有当取代基基团为氯时其表现出最好的光敏性,这一结果与Law等人的研究结果相同。
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The organic compounds obtained from the first step reaction are mainly benzophenone,9,10-anthraquinone and 1,3-Diphenylisobenzofuran and so on.
第一步中生成的有机化合物主要成分为二苯甲酮、9,10-蒽醌和1,3-二苯基异苯并呋喃等。
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The chemical composition research aspect literature report are extremely few: According to reports, the root of Rosa davurica pall includes the lactone, the tanning substance, the return to original state sugar, the total lucoside, the flavanone, the phenol class, the biological alkalis, the protein, the anthraquinone equi com ponent, moreover ,the total polysaccharide is the even polysaccharide which is composed by the fructose.In 1999, for the first time from puncture the root in the alcohol extraction to sep arate Oleanic acid. And used the double wave length thin layer scanning method to determine the uneven pillar tartaric acid in to puncture in the root ontent.
化学成分研究方面文献报道极少:据报道,山刺玫根中含有内酯、鞣质、还原糖、总苷、黄酮、酚类、生物碱类、蛋白质、蒽醌等成分,而且山刺玫根中总多糖是由果糖组成的均多糖。1999年,首次从刺玫根的乙醇提取物中分离出齐墩果酸,并采用双波长薄层扫描法测定了齐墩果酸在刺玫根中的含量。
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The catalytic system composed of NHPI and transition metal ion can catalyze effectively ethane into acetic acid,cyclane into dicarboxylic acid,toluene into benzoic acid,alkene into epoxide,alkyne into acetylenic ketone,and amide into imide;NHPI used alone can catalyze adamantane to be carbonylated,hydrogen peroxide prepared by oxidization alcohol;NHPI combined with as...
NHPI与过渡金属离子组成的催化体系能高效地催化乙烷氧化为乙酸、环烷烃氧化为二元羧酸、甲苯氧化为苯甲酸、烯烃氧化为环氧化物、炔烃氧化为炔酮、酰胺氧化为酰亚胺;NHPI单独使用能催化金刚烷发生氧化羰基化反应、催化氧化醇制取过氧化氢;NHPI与有机助催化剂如偶氮二异丁腈、溴化季铵盐、蒽醌和醇等也能催化分子氧氧化反应。
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To further study the chemical constitutes of lipophilic active parts, we prepared Alc95% and Alc50% according to original literature. 20 compounds were isolated by using macroporous resin, silica gel, polyamide, Sephadex LH-20, Rp-18, preparative TLC and preparative HPLC chromato-graphy. The structures of them were elucidated by means of physical and chemical properties, modern spectroscopic analysis techniques—UV、IR、 EI/MS、ESI/MS、〓H-NMR、〓C-NMR、DEPT、HMQC、HMBC. They are nine anthraquinones: chrysophanol (95-1), physcion (95-2), emodin (95-5), aloemodin (95-7), rhein (50-1), sennoside A or B (50-6),ω-hydroxylemodin (95-10), chrysophanol-8-0-β-D-glucoside (95-12), aloemodin-ω-0-β-D-glucoside (95-13); three phenanthaquinones: tanshinone ⅡA (95-3), cryptotanshinone (95-6), tanshinone Ⅰ(95-4); one isoflavone: 7, 3'-dihydroxyl-5' methoxyisoflavone (95-14) and protocaechuic aldehyde (95-9), protocaechuic acid (95-11), astragaloside Ⅳ(50-4), amygdalin (50-5), 2, 3, 5, 4'-tetrahydroxylstilbene-2-0-β-D-glucoside (50-3),-catechin (50-2), cinnamic acid (95-8). Among them, 3'-dihydroxyl-5' methoxyisoflavone (95-14) is a new compound.
经过溶剂萃取、大孔吸附树脂富集、Sephadex LH-20精制、制备TLC及Semi-pre HPLC等手段从中分离了20个化合物,利用理化性质和波谱技术(UV、IR、EI/MS、ESI/MS、〓H-NMR、〓C-NMR、DEPT、HMQC、HMBC)相结合鉴定了它们的结构,分别为9种蒽醌类化合物:大黄酚,大黄素甲醚,大黄素,芦荟大黄素,大黄酸,番泻苷A或B,ω-羟基大黄素(ω-hydroxylemodin),大黄酚-8-0-β-D-葡萄糖苷(chrysophanol-8-0-β-D-glucoside),芦荟大黄素-ω-0-β-D-葡萄糖苷(aloemodin-ω-0-β-D-glucoside);3种菲醌类化合物:丹参酮ⅡA(tanshinoneⅡA),隐丹参酮,丹参酮Ⅰ(tanshinone Ⅰ);1种异黄酮:7,3'-二羟基-5'-甲氧基异黄酮(7,3'-dihydroxy-5' methoxyisofla-vone)以及原儿茶醛,原儿茶酸,黄芪甲苷(astragaloside Ⅳ),苦杏仁苷,2,3,5,4'-四羟基二苯乙烯-2-0-β-D-葡萄糖苷(2,3,5,4'-tetrahydroxylstilbene-2-O-β-D-g1ucoside),Z—儿茶素,桂皮酸。
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In this thesis, investigations focused on heteropoly acids-catalyzed C-C and C-N bond formation reactions and the synthesis of xanthenediones and acridinediones under thermal conditions are described.1.12-Phosphotungstic acid has been used as an efficient,eco-friendly,and air- and moisture-stable catalyst to promote the direct dehydrative substitution of the hydroxy group of benzylic and allylic alcohols with variousβ-dicarbonyl compounds.
本篇论文主要描述了杂多酸催化下的C-C和C-N键的生成,以及无溶剂直接加热下合成十氢氧杂蒽二酮和9-芳基十氢吖啶二酮。主要内容如下:1。在磷钨酸催化下,1,3-二羰基化合物与醇能够顺利偶合,脱除一分子的水,生成烷基化的1,3-二羰基化合物。反应在甲苯中进行时,二芳基甲醇能与各类1,3-二羰基化合物反应,成率很高;但对于1-苯乙醇,只能得到很低的产率。
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The results were as follows:ethanol volume fraction 70%,solid liquid ratio 1∶10,extraction time 10 min,temperature 50℃,ultrasonic power(160 W). Capsella bursa-pastoris ; alkaloids ; ultrasonic ; extraction
近年来,人们用超声波技术提取植物中的生物碱、黄酮、多糖、皂甙、蒽醌、香豆素等生物活性物质[3,4],结果都表明超声波提取比常规提取法费时少
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The main volatile chemical components were n-hexadecanoic acid (24.03%), dodecanoic acid (6.20%) tetradecanoic acid (6.44%), 6, 10, 14-trimethyl-2-pentadecanone (4.03%), nonanal (4.54%), anthracene (4.26%), benzeneacetaldehyde (4.25%).
主要成分有:正十六酸(24.03)%、十四酸(6.44%)、6,10,14-三甲基-2-十五烷酮(4.30%)、壬醛(4.54%)、蒽(4.26%)、苯乙醛(4.25%)。
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In recent years, the foreign producers of organic pigment increased the capacity of high performance organic pigments, including the types of perylene series , isoindolinones, quinacridones, copper phthalocyanines, anthraquinones, dioxazines, special azo dyes and high performance naphthols.
近几年,国外有机颜料生产公司增加了高档有机颜料的生产能力,生产的高档有机颜料品种包括苝系、异吲哚啉酮类、喹吖啶酮类、铜酞菁类、蒽醌类、二噁嗪类、特殊偶氮类和高档色酚类。
- 推荐网络例句
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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。
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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。
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Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...
嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。