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1.
周其忠  史济良  蒋锡夔  黎占亭 《中国化学》2002,20(11):1279-1286
IntroductionAggregationisacommonphenomenonformanysim pleorganicmoleculesaswellascomplexmoleculeswithimportantbiologicalactivity .Formationofaggregatesmaybedrivenbydifferentnon covalentinteractions ,suchashydrogenbonding ,1electrostaticinteraction ,2 orhy dr…  相似文献   

2.
Introduction  Non covalentinteractionshaveabiginfluenceontheconformationalorganizationofthebiomoleculeswhichisresponsiblefortheregio andstereo specificityofvariousbiologicalprocesses .1Amongtheseinteractions ,thein tramolecularstackinginteractionbetweens…  相似文献   

3.
刘勉  叶蕴华 《中国化学》2002,20(11):1347-1353
IntroductionCyclicpeptides ,whichareconstrainedconforma tionallyandmoreresistanttoproteasedigestionsthantheirlinearprecursors ,havebeenofgreatinterestassynthetictargetsbothaspotentialdrugleadsandasmodelsforcon formationalanalysis .1 4 Currentmethodsforsynt…  相似文献   

4.
李前忠  罗辽复  张利绒 《中国化学》2002,20(12):1506-1513
IntroductionThekineticfeatureofligandinteractionswithmacro moleculeplaysasignificantroleinbiologicalregula tion .1,2 Multisubunitproteinssuchashumanhemoglobinfrequentlyexhibitcooperativity ,3 6whicharisesfromacouplingbetweentheeffectsofligandbindingatthein…  相似文献   

5.
Silyleneisthesimilarityofsilicontocarbene,and,likecarbeneinorganicreactions,itplaysaveryimportantroleinorganosiliconreactions.Inrecentyears,therehavebeenmanyreportsonsilylenesinquantumchemicalresearches[1—3].Investigationonitsorganicreactionshowsthatreali…  相似文献   

6.
IntroductionFreeradicalformationfromhalogenatedhydrocarbonshasreceivedconsiderableattentionbecauseofitsscientif icandenvironmentalrelevance .1 6 Thisreactionseemstoplayanimportantroleinvariousprocesses .Bond break ingreactionisapowerfulsynthetictooltoprov…  相似文献   

7.
IntroductionGlycolethersareimportantindustrialderivativesofepoxides .Polyethylene glycolethylethersandpolypropyleneglycolethylethersaretwoimportantseriesofproducts .Glycolethersaregoodsolventsduetothepresenceof—O—and—OH groups.Asare sult ,theyarewidelyuse…  相似文献   

8.
Phycobiliproteinsarethelightharvestingpigmentsforphotosynthesisinalgaeandincludephycoerythrin,phycocyaninandallophycocyanin.Inredandbluealgae,differentkindsofphycobiliproteinsaswellaslinkerpolypeptidesformawellorgnizedsystemwithefficientfunctionsoflig…  相似文献   

9.
IntroductionOwingtotheformationofstableanddeeplycoloredcomplexeswithheavymetalions(suchaslead(Ⅱ)etc),theferrocenylaroylhydrazonesarenotonlypotentiallyusefulasspe-cificreagentsinanalyticalandextractivechemistry[1]butalsostronglyactivebiologically,andc…  相似文献   

10.
IntroductionAntimony freePb Caalloyshavecommonlybeenusedinthemanufactureofgridsinordertominimizegassingineitherlow maintenanceorvalve regulatedleadacidbatteries .However ,thesealloyscancauseotherproblemssuchasprematurecapacityloss ,lowcharge ac ceptanceand…  相似文献   

11.
IntroductionCopper(Ⅱ)complexeswithorganicacidsandotherdonorligandsexistextensivelywithinhumanbodies,andplayanimportantroleinavastrangeofchemicalandbiochemicalcatalyticsystems[1].Muchattentionhasbeenpaidtowhattheymayrevealtothestructuresandtheprobable…  相似文献   

12.
IntroductionComputersimulationapproacheshavebeenprovedtobepowerfultoolstodetermineandcharacterizedynamicsofproteinsandnucleic...  相似文献   

13.
Inrecentyearstherehasbeeninterestinthepropertiesofenzymes[1,2]inorganicsolvents.Anumberofadvantageshavebeenreportedforenzymes’catalysisinorganicsolvent:enzymeshavebeenreportedtobemorethermostableinorganicsolvent,tocatalyzethereactionswhicharekineticallyo…  相似文献   

14.
IntroductionSinceSchifbaseanditsmetalcomplexesareofantibacterialandanticancerbioactivities,theyhavebeenaresearchsubjectofmuch...  相似文献   

15.
IntroductionOrderedfilmsofwater insolublesurfactantscanbepreparedbycastingtheirsolutionsordispersionsontoasolidsupport .1Evaporationofthesolventaftercastingleavesthinfilmself assembledintoorderedstackofbi layer ,whichissimilartobiologicalmembraneformedby…  相似文献   

16.
IntroductionSupramoleculeisakindofsystemwithspecialstruc turedependingontheweakmolecularinteractions (suchasvanderWaals ,hydrogenbond ,electrostaticandhy drophobicinteractions) .Theweakinteractionsarerelatedtobiologicalprocesses ,forexample ,thecatalyticrea…  相似文献   

17.
IntroductionAmongtheinteractionsbetweenporphyrinsandfunctionalmoleculessuchasaminoacids ,ubiquinoneplaysimportantbiologicalfunctions .Themolecularrecognitionofaminoacidsandtheirderivativesisanimportanttopicforbothunderstandingthemechanismofaminoacyl tr…  相似文献   

18.
Investigation on False Peak Phenomena in On-line Sweeping Technique in MEKC   总被引:2,自引:0,他引:2  
杨更亮  李保会  王德先  陈义 《中国化学》2002,20(12):1579-1583
IntroductionMicellarelectrokineticchromatography (MEKC)wasinventedtoextendtheutilityofcapillaryelectrophoresis(CE)andpermittedtheseparationandanalysisofneutralcompounds .ButjustlikeothermodesofCE ,MEKCarehamperedbythelowconcentrationsensitivityoftheultra …  相似文献   

19.
EnantioselectiveSynthesisofAminoAcidsBasedonNucleophilicReactionsofEnolatesZhou,Chang-You(DepartmentofChemistry,IndianaUniver...  相似文献   

20.
IntroductionTheelectrochemicaloxidationofsmall,oxy genatedorganicmoleculeson platinumandrelatedelectrodematerialshasbeenextensivelystudiedoverthepastthreedecades ,mainlyinsupportoffuelcellresearches[1— 4 ] .Thesereactionsarecomplicated ,asseveralelementarys…  相似文献   

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