二苯乙二酮
- 与 二苯乙二酮 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Their structures were characterized as dihydroconiferyl dihydro-p-coumarate, vanillin, apocynin, p-hydroxybenzaldehyde, syringaldehyde, syringic acid, syringylethanone,α-hydroxypropiosyringone, coniferyl aldehyde, dihydroconiferyl alcohol, 2-hydroxyphenylpropanol, and 3-hydroxy-4-methoxy-phenylethanol, respectively.
结果 从该植物中分离得到12个酚性化合物,其结构分别为二氢松柏醇二氢对羟基桂皮酸酯,香草醛,罗布麻宁,对羟基苯甲醛,丁香醛,丁香酸,丁香乙酮,α-羟基丁香丙酮,松柏醛,二氢松柏醇,2-羟基苯丙醇和3-羟基-4-甲氧基苯乙醇。
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They are 4-(2- hydroxy-3-butynlenoxy) benzoic acid (1, WA), 5-chloro-7, 8-dihydroxy-7-methyl- 6-oxo-3- [ -3, 4-dihydroxy-3, 5-dimethyl-l-heptylene] -1H-8, 8a-dihydrobenzo [2, 3-c] pyran (2, WB),-2-(2-methyl-2-dibutene diamido)-2-butenoic acid (3, B5262), 3, 4-dihydro-9, 10-dihydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3- c] pyran-1-one (4, A73 semi-Vioxanthin), 8, 8'-bis (6, 9-dioxo-3,4-dihydro-10- hydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3-c] pyran-1-one)(5, A122 Xanthomegnin), 2, 5-dioxo-3a-hydroxymethyl-3, 3a, 6, 6a-tetrahydro-furo [2, 3-b] furan (6, 1003-2), 7-acety1-5-chloro-6, 8-dioxo-7-methyl-3- [ -3, 5-dimethyl-1, 3- diheptylene] -4aH-benzo [2, 3-c] pyran (7, M2-2 sclerotiorin), respectively.
它们分别被命名为4-(2-羟基-3-丁炔氧基)苯甲酸(1,WA)、5-氯-7,8-二羟基-7-甲基-6-氧代-3-[-3,4-二羟基-3,5-二甲基-1-庚烯基]-1H-8,8a-二氢苯并[2,3-c]吡喃(2,WB)、-2-(2-甲基-2-丁烯二酰亚胺基)-2-丁烯酸(3,B5262)、3,4-氢-9,10-二羟基-7-甲氧基-3-甲基-1H-萘并[2,3-c]吡喃-1-酮(semi-Vioxanthin,4,A73)、8,8'-双(6,9-二氧代-3,4-二氢-10-羟基-7-甲氧基-3-甲基-1H-萘并[2,3-c]吡喃-1-酮)(Xanthomegnin,5,A122)、2,5-二氧代-3a-羟甲基-3,3a,6,6a-四氢-呋喃并[2,3-b]呋喃(6,1003-2),7-乙酰基-5-氯-6,8-二氧代-7-甲基-3-[-3,5-二甲基-1,3-庚二烯基]-4aH-苯并2,3-c]吡喃(Sclerotiorin,7,M2-2)。
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The results showed that there were 8 kinds of aliphatic, 5 kinds of esters, 2 kinds of aldehydes, 2 kinds of nitrogen sulfur heterocyclic rings and one kind of hydrocarbon, alcoholics, ketone, lactones respectively in the analyzed 21 kinds of aroma components, and the content of furfural,β-methyl valeric acid, palmitic acid, nicotine, neohytadiene were higher, next were acetyl ethyl propionate, caleric acid, phenyl ethyl acetate, hydroxylic diethyl succinate.
结果表明,在分析出的21种香气成分中,分别有脂肪酸类8种,酯类5种,醛类2种,氮硫杂环类2种,烃类、醇类、酮类、内酯类各l种,其中相对含量较高的物质成分是糠醛、β-甲基戊酸、十六碳酸、烟碱、新植二烯,其次是乙酰丙酸乙酯、异戊酸、苯乙酸乙酯、羟基丁二酸二乙酯等。
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Based on the synthesis method and the function of decreasing blood glucose levels of rosiglitazone, and the report on benzoquinones which resulted in a significant decrease in blood glucose levels, a novel non-thiazolidinedione class of PPARy agonist 2, 5-Dihydroxy-3-{4-[2-(methyl- pyridin-2- yl-amino)- ethoxy] -phenyl}-6-phenyl-[l, 4] benzoquinone (4) was designed and synthesized.
在合成罗格列酮的基础上,根据某些醌类结构化合物的类似胰岛素作用,设计并合成了一种非噻唑烷二酮类PPARγ激动剂2,5-二羟基3-{4-[2-(甲基-2-吡啶氨基)-乙氧基]-苯基}-6-苯基-1,4苯醌(4)。
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In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.
本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。
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The process comprises the subsequent steps a through e: a reacting phthalic anhydride with fluorobenzene or a derivative thereof in appropriate reaction conditions; b over reducing the product obtained in step a at the ketone moiety; c reducing the product obtained in step b with sodium dihydro-bis (2- 15 methoxyethoxy) aluminate to the corresponding alcohol ; d chlorinat ing the alcohol obtained in step c ; e inserting CO into the product obtained in step d through an appropriate Pd-containing catalytic system.
该方法包括以下步骤a~e:a使邻苯二甲酸酐与氟苯或者其衍生物在适当的反应条件中反应;b完全还原步骤a中获得的产品的酮部分;c用二氢-二(2-甲氧基乙氧基)铝酸钠将步骤b中获得的产品还原成相应的醇;d对步骤c中获得的醇进行氯化;e通过适当的含Pd的催化剂体系,将CO插入到步骤d中获得的产品中。
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Compared to the control animals, the rats treated with AC showed increased levels of citrate, 2-oxoglutarate and cis -aconitate, and decreased levels of hippurate and phenylacetylglycine in the urine. Such metabolic changes may have reflected, respectively, the changes in body energy metabolism and in the metabolism of intestinal flora in response to AC treatment.
结果表明灌胃给药后代表能量代谢的柠檬酸,2-酮戊二酸(2-oxoglutarate)和顺乌火酸( cis -aconitate),反应肠道菌群代谢状况的马尿酸盐和苯乙尿酸出现异常,并且这些变化在给药后0~8 h达到最大,16 h后基本恢复正常。
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MIPC was photocatalytically transformed to 3,4-dihydroxyl hypnone, 2-iso-butyl phenol and acetic acid, and mineralized ultimately in oxygenated TiO2 slurries. The photocatalytic degradation processed according to first order kinetics with the apparent rate constant depending on initial concentration, light intensity and the amount of catalyst. The amount of catalyst had an optimum value (0.5g/L). The apparent rate was inversely proportional to square root of the initial concentration approximately.
MIPC能被光催化转化成3,4-二羟基苯乙酮、2-异丁基苯酚和乙酸等产物并最终被矿化,MIPC的光催化反应过程符合一级动力学规律,其表观速率常数与MIPC的起始浓度、TiO2量和光强等因素有关,MIPC降解的反应速率与入射光强成正比,与MIPC初始浓度的平方根成反比。
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The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.
第一条路线首先从1,2,4-三甲氧基苯出发与卤乙腈作用合成卤代芳酮中间体,然后与罂粟碱反应合成开链片螺素,最后经乙酰化、去保护、成内酯环得到片螺素;第二条路线由制备的芳醛和制备的硝基乙酸乙酯经缩合得到2-硝基-3-芳基丙烯酸乙酯,然后由该中间体与罂粟碱反应,在完成关环的同时也引入酯基,最后去保护、成内酯环得到片螺素;第三条路线是由香豆素或茚二酮出发,经溴代后的中间体与罂粟碱反应,得到片螺素的基本框架。
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Deoxybenzoin(3) was prepareded by using the resorcinol and substituted phenylacetic as starting meterials in microwave-mediated.Then the compound(3) was reacted with acetic anhydride to produce(4).The compound(4) was hydrolyzed to convert compound(5) in the acid-mediated. The compound(5) was reacted with the 1,2-dibromo-ethane and 1,3-dibromo-propane in refluxed condition with acetone as solvent to give(6) or(7),respectively.Lastly,the title compounds were synthesized by refluxing(6) or(7) with 2-methyl-benzimidazole and potassium carbonate in acetone solution.
以取代苯乙酸和间苯二酚为起始原料,用微波辐射法合成脱氧安息香(3),(3)与乙酸酐缩合生成2-甲基-7-乙酰氧基异黄酮(4),(4)在酸性条件下水解生成相应的异黄酮(5),化合物(5)分别与1,2-二溴乙烷和1,3-二溴丙烷反应生成(6)和(7),化合物(6)和(7)再分别与2-甲基苯并咪唑偶合生成目标化合物。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?