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- 与 咪 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Replacement of one benzimidazole fragment with benzothiazole or benzoxazole and optimization of the structure to create the new frame of the compounds were also carried out with the exception to find more potent compounds. The purpose of design and synthesis of these compounds is to investigate the QSAR of this class of compounds with the inhibition of HCV NS3/NS4A protease and eventually to develop more potent inhibitors.
本文首次采用了丙二酰胺与邻芳二胺在微波辐射下制备对称性双芳并唑甲烷化合物、用芳并唑-2-乙酸乙酯与邻芳二胺在微波辐射下制备非对称性双芳并唑甲烷化合物、用4-取代噻唑-2-乙酸乙酯与邻芳二胺在微波辐射下制备非对称性(4-取代-噻唑-2-基)(1H-芳并咪唑-2-基)甲烷化合物等合成路线,共合成了48个目标化合物,其中41个为新化合物,用~1HNMR,ESI-MS,FT-IR,元素分析对这些化合物进行了全面表征,确定了这些化合物的结构,并对部分化合物进行了~(13)CNMR分析。
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We firstly introduced benzoazole (including benzimidazole, benzoxazole and benzothiazole) into the meso-positions of porphines and obtained five new porphyrins 36a-e. Their structures were characterized by 1H NMR, MS, UV-vis spectra and fluorescence emission spectra.
将苯并唑类基团(苯并咪唑、苯并噁唑和苯并噻唑)引入到卟吩中位,得到5个新型卟啉36a-e衍生物,并经核磁氢谱、质谱、紫外吸收光谱和荧光发射光谱表征了化合物的结构。
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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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In this dissertation, synthesis of benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene]dichlororuthenium (41) has been improved.
本论文首先改进了钌卡宾配合物[1,3-二-(2,6-甲苯基)-4,5-二氢咪唑基]-苯亚甲基-三苯基膦-二氯合钌(41)的合成方法。
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An inclusion complex -BINOL--Omeprazole or -BINOL--Omeprazole was first obtained from racemic omeprazole with chiral host --or --2, 2'- dihydroxy-1, 1'-binaphthyl in high selectivities, and thus both optically pure enantiomers of omeprazole were prepared as syrup with more than 99% enantiomeric excess, the overall yields of both two enantiomers are more than 60%.
首次发现光学纯R--或s--联二萘酚高效识别并包结R--或S--奥美拉唑,形成包结络合物的现象,并首次将包结拆分法应用于手性苯并咪唑类抗溃疡药物的制备,用一种构型的光学纯联二萘酚直接拆分奥美拉唑,可同时得到油状或糖浆状e.e。
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A new conjugation molecule L2, based on 2,4,5-triphenylimidazole and 6-phenyl-2,2\'-bipyridine, was synthesized in two steps.
基于2,4,5-三苯基咪唑和6-苯基-2,2\'-二联吡啶,合成了一个新型的共轭分子L2。
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Two compounds, [Cu4SO4]n (1) and [Cu(H2O)2SO4]n (2)(im = imidazole, bpy = 2,2'-bipyridine), were synthesized under solvothermal condition in 67% and 82% yields, respectively.
溶剂热体系下采用咪唑、2,2'-联吡啶为配体与硫酸铜合成了2种蓝矾衍生物:[Cu4SO4]n (1)和[Cu(H2O)2SO4]n (2),产率分别为67%和82%。
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The treated group ( n = 69) was given cimitidine associated with bletilla striata, rhubarb and the control group( n = 67) was given cimitidine only.
136例上消化道大出血患者随机分为两组,治疗组(69例):在西咪替丁治疗的基础上加用中药生大黄、生白芨。
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Major product lines include various kinds of boronic acids, pyridines, indoles, imidazoles, as well as many other fine chemicals.
公司主要产品包括各种硼酸,吡啶,吲哚,咪唑,和其它精细化工产品和有机化合物。
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Creme Brulee is french dessert, in chinese I think it called 焦糖奶油布丁, something like that
诗韵,你原来有个仔噶!点解我地唔知道嘅?系咪由於你嘅私人嘅问题啊?
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。