烯酮
- 网络ketenes;Ketene;alkenone
![烯酮](cache/947929.jpg)
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由(R)-丙叉甘油醛得到的手性亚胺1能与烯酮2在温和条件下迅速反应。
Chiral imine 1 derived from ( R ) glyceraldehyde acetonide could rapidly react with ketenes 2 which was converted from mixed anhydride or acid chloride under mild conditions .
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烯酮,特别是二甲基烯酮,很容易齐聚和聚合。
Ketenes , notably dimethyl ketene , readily undergo oligomerization and polymerization .
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玉米赤霉烯酮对膨胀青萍G3生长与发育的影响
The Effects of Zearalenone on the Growth and Develpment of Lemna Gibba G_3
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玉米赤霉烯酮ELISA定量检测试剂盒研制
Development of ELISA-kit of quantitative analysis for Zearalenone
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研究了羟酮酸性脱水制备中间产物烯酮(3-庚烯-2-酮)的相关工艺条件,得出H3PO4为脱水反应的优良催化剂。
The preparation of alkene ketone from hydroxide ketone dehydrogenation was studied , H3PO4 was selected as the super catalyst .
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讨论了有关合成单元反应的机理和影响反应的因素,探讨了2-戊基环戊烯酮合成的其它方法和反应过程中无溶剂条件下所发生的Michael加成反应。
Some related reaction mechanisms , novel methodology and solvent-free Michael addition were also discussed .
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禾谷镰孢菌产玉米赤霉烯酮毒素zearalenone的PCR检测
Detection of zearalenone produced by Fusarium graminearum using PCR assay
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玉米赤霉烯酮对乳腺癌细胞MCF-7增殖和凋亡的影响
Effects of zearalenone on proliferation and apoptosis in MCF-7 cells
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大豆异黄酮与玉米赤霉烯酮对乳腺癌细胞系MCF-7联合作用的研究
Research of Interaction of ISO and ZEA on Breast Cancer MCF-7 Cells
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通过对天然手性源(R)-香芹酮的10步常规转化以24%的总产率完成了环己烯酮的合成。
The cyclohexenone was obtained by several functional transformation of ( R ) - ( - ) - carvone in 10 steps and 24 % overall yield .
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沙利度胺与孕三烯酮联合应用对EMs模型大鼠异位移植物的抑制具有协同作用。
Thalidomide in combination with gestrinone had synergistic action on the depressant effect on the ectopic implants in EMs rats .
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LA和孕三烯酮均分别呈时间和剂量依赖方式抑制细胞的生长增殖。
The growth and proliferation of ectopic and eutopic endometrial cells were inhibited in a dose-and time-dependent manner by LA and Gestrinone at different concentrations .
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交联羧甲基复合变性葡聚糖的合成及吸附玉米赤霉烯酮(ZEA)的研究
Preparation and Adsorptive Properties toward Zearalenone of Crosslinking Carboxymethyl Double Modified Yeast Glucan
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第三、通过ω-侧链和取代环戊烯酮的1,4-加成反应合成前列腺素E类化合物方法的研究。
Study of the syntheses of ω - side chain compounds ③ study on preparations of prostaglandin E analogs by 1,4-additon reaction of ω - side chain compounds and substituted cyclopentenones .
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镰刀菌可产生多种真菌毒素,如玉米赤霉烯酮、T-2毒素,对动物和人类产生严重毒害。
Zearelenone and T-2 toxins are mycotoxins produced by several Fusarium species in cereals .
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目的研究F-2毒素引起体外培养细胞(HELA细胞)的DNA损伤。方法应用单细胞凝胶电泳技术(SCGE),测定玉米赤霉烯酮,即F-2毒素。
DNA damage of HELA cells by F-2 toxin was determined by single-cell gel electrophoresis ( SCGE ) .
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用本法与HPLC法同时检测美国维康公司玉米赤霉烯酮盲样,结果均在允许范围之内,且两种检测方法无差别。
Detecting the VICAM sample with ELISA method and HPLC method , the results were within the range of the sample , and there was no statistic difference between the two methods .
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信中琼斯承认服用体育禁药类固醇“TheClear”,也就是四氢孕三烯酮(THG),而这种药在药检中不会被查出。
In the letter , Jones admitted taking the banned-steroid THG , known by its street name " the clear ," because it could not be detected by dope tests .
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建立了玉米和小麦中玉米赤霉烯酮(ZEN)的多功能柱净化-高效液相色谱检测方法。
A method was developed for the determination of zearalenone ,( ZEN ) in maize and wheat by multifunction cleanup column ( MFC ) and high performance liquid chromatography .
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介绍了改性烷基烯酮二聚体(AKD)中性施胶剂应用于书写纸的施胶工艺及其经济成本核算;
The sizing technology of the transform AKD sizing agent in writhing paper was introduced , and its cost was calculated .
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雄甾烯酮~(13)CNMR谱化学位移的QSSR研究
QSSR Study of ~ ( 13 ) CNMR Chemical Shifts of Androstenone
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α-氧代烯酮二硫代缩酮化学(XXXⅡ)&由2-(1,3-亚丙二硫基)亚甲基环己酮合成酚醚类化合物
The Chemistry of α - Oxo Ketene Dithioacetals ( X X X ⅱ) - Synthesis of Aryl Ethers via 2 - ( 1,3-Dithiopropylene ) methylene Cyclohexanone
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玉米赤霉烯酮(zearaleonoe,ZEN)是污染粮油食品的主要真菌毒素毒素之一,包括中国在内的多个国家制定了严格的限量标准。
Zearalenone ( ZEN ) is one of the main fungal toxin that contaminate grains and edible oil , of which has been established strict limitation standards by multiple countries including China .
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当选用DMF为溶剂,且不加催化剂的条件下,在温度为303K反应时,原料的转化率高达98.50%,主产物马鞭草烯酮的选择性高达51.00%。
While the conversion is 98.50 % and the selectivity of verbenone is up to 51.00 % in DMF .
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目的观察真菌雌激素玉米赤霉烯酮(ZEA)对人乳腺癌细胞MCF-7增殖和凋亡的影响,并初步探讨其分子生物学作用机制。
Objective To explore the effects of zearalenone ( ZEA ) on proliferation and apoptosis in estrogen-dependent human breast cancer MCF-7 cells and the likely underlying molecular mechanisms .
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另有5例患者体重增加了3kg以上,9例面部出现痤疮,均在停用孕三烯酮后恢复正常。
Cases ' weight increased above 3 kg . Facial acne occurred in 9 cases .
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选用2ml有机碱催化剂和反应时间15h生成烯酮产率为93%。
Choosing 2ml organic alkali as catalyst and setting the reacting time as 15 hours , the producing rate of olefine ketone was 93 % .
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烯酮和亚胺[2+2]环加成产生β-内酰胺的反应,被称作Staudinger反应。
The reaction of ketene and imine [ 2 + 2 ] cycloaddition to yield β - lactam is called Staudinger reaction .
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玉米赤霉烯酮(Zearalenone,ZEN)具有很强的生殖毒害和致癌性,广泛存在于霉变的谷类作物和奶制品中,给养殖业带来巨大的影响。
Zearalenone ( ZEN ) is widely found in moldy grain crops and dairy products , which has a strong reproductive toxicity and carcinogenicity . It has a huge impact on livestock breeding .
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碳酸钾催化从烯酮二硫缩醛合成多取代嘧啶本文以2-氰基-3,3-二甲硫基丙烯腈(1a)为起始原料通过方法和性质研究共得到尚未见文献报道的四类多取代嘧啶14个化合物。
Synthesis of polysubstituted pyrimidine from ketene dithioacetals by using K_2CO_3 catalyst Fourteen novel polysubstituted pyrimidine derivatives of four types were obtained by the designing synthesis , studies of the synthetic methods and chemical properties for them .