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1.
赵生敏  王梅祥 《中国化学》2002,20(11):1291-1299
IntroductionBiotransformationsofnitriles ,eitherthroughanitri lase catalyzeddirectconversiontothecarboxylicacidsorviaanitrilehydratase catalyzedhydrationtotheamidesfollowedbythehydrolysistotheacidsmediatedbyanamidase ,haveprovidedausefulandenvironmental…  相似文献   

2.
IntroductionSyntheticnucleaseswhicheficientlyandselectivelymakenucleicacidscleavedundermildconditionshavemanyimportantpotenti...  相似文献   

3.
张莉  傅洵  胡正水  李秋红  徐婷 《中国化学》2002,20(12):1499-1505
Introduction  Theextractionofaminoacidshasrecentlyattractedagreatdealofattention .Theycouldbeextractedintore versemicellesormicroemulsionswithasurfactantsuchasAOT [sodiumdi (2 ethylhexyl)sulfosuccinate].Lea didisetal.investigatedthepartitionofaminoacidsbe …  相似文献   

4.
EnantioselectiveSynthesisofAminoAcidsBasedonNucleophilicReactionsofEnolatesZhou,Chang-You(DepartmentofChemistry,IndianaUniver...  相似文献   

5.
ThebenzoylationoftoluenewithbenzoylchlorideisanimportantacidcatalyticFriedalCraftsreaction.Lewisacids,suchasdehydratedAlCl3an...  相似文献   

6.
王以  吉保明  丁奎岭 《中国化学》2002,20(11):1300-1312
Introduction  Enantioselectiveallylationofcarbonylcompoundsisoneoftheusefulandconvenientmethodfortheprepara tionofopticallyactivesecondaryhomoallylicalcohols .1Althoughnumerousworkonthereactionusingastoichio metricamountofchiralLewisacidshasbeenreporte…  相似文献   

7.
杨旭武  陈三平  高胜利  史启祯 《中国化学》2002,20(10):1000-1006
IntroductionGTF ,theindispensablecofactorofinsulin ,isacomplexformedbetweenaminoacid ,niacinandchromi um .Insulindoesnotkeepthenormalsugarmetabolicun lessGTFhasaffinityforitscomplex .1Thus ,itisdesir abletohaveagoodunderstandingofcoordinationbehaviorofchromi…  相似文献   

8.
IntroductionDiorganotinderivativesof 2 ,6 pyridinedicarboxylicacidexhibithighinvitroantitumouractivities .1 5Thesecompoundshavebeensynthesizedbythereactionofdiorganotindichloridesordiorganotinoxideswith 2 ,6 pyridinedicarboxylicacid ,butthereactionbetweentri …  相似文献   

9.
查正根  谢镇  周存六  汪志勇  王雨松 《中国化学》2002,20(12):1477-1480
Overthepasttenyears ,thepursuitofsynthetictar getswithincreasingcomplexityhasresultedinthedevel opmentofreactionsthatemphasizechemo ,regio ,di astereo andenantioselectivity .1 4 Theadditionsoforganichalidetocarbonylcompounds ,promotedbyvariousmet alsandacidc…  相似文献   

10.
张四纯  周国俊  鞠熀先 《中国化学》2002,20(10):1049-1054
IntroductionGallicacidexistsintheleavesandfruitsofmanytypesofplantsandiswidelyusedinmedicineforanti oxi dationandantibacterialactivity ,antiflammatoryactionandanti canceractivity .1 5Inspiteofthehealthimportanceofgallicacid ,itsmetabolismandkineticsinthehu…  相似文献   

11.
IntroductionChiralmethylmoietyisgeneralyinnaturalproductsandmedicines[1],whileopticalyactiveacidsandalcoholsareusualyusedasin...  相似文献   

12.
Non-isothermalKineticsofThermalDecompositionReactionsofSchiffBaseComplexesofAminoAcidswithTranistionMetals(I)LIShu-lan,LIUDe-...  相似文献   

13.
IntroductionOneofthemostattractivefeaturesofcalix[4]arenesistheircuplikestructure ,whichwasobservedbothinsol idstateandinsolution .Thecavitydefinedbytheconeconformerofthismacrocyclewasextensivelyemployedasabindingsitefortherecognitionofneutralguestshavin…  相似文献   

14.
IntroductionApplicationoftherareearthcompoundshavebeenfoundinmedicineandagriculture.Sotheremayberareearthcompoundsinpeptideandproteincomplexes.Itisimportanttounderstandmoreclearlythebondingofthelanthanideionsinthecoordinationcompoundswithaminoacids.S…  相似文献   

15.
IntroductionCopper(Ⅱ)complexeswithorganicacidsandotherdonorligandsexistextensivelywithinhumanbodies,andplayanimportantroleinavastrangeofchemicalandbiochemicalcatalyticsystems[1].Muchattentionhasbeenpaidtowhattheymayrevealtothestructuresandtheprobable…  相似文献   

16.
IntroductionOxalateinnormalurineismainlyformedbythemetaboliteofextrinsicfoodandintrinsicglucoseandprotein .Thehighoxalicacidconcentrationinurineisthemostdangerousfactorresultinginkidneystoneandurinetractstone[1] .Theyareformedprimarilybecauseoftheer roro…  相似文献   

17.
IntroductionSalicylicacid (H2 sal)isaninterestingversatilelig andanditscomplexesareofcontinuousinterestfrombothstructuralandbiologicalviewpoints .1 2 H2 salhastwofunctionalgroups ,thecarboxylateandphenoxide ,whichhavebeenwidelyempolyedinthesynthesisofmononucl…  相似文献   

18.
IntroductionSupramoleculeisakindofsystemwithspecialstruc turedependingontheweakmolecularinteractions (suchasvanderWaals ,hydrogenbond ,electrostaticandhy drophobicinteractions) .Theweakinteractionsarerelatedtobiologicalprocesses ,forexample ,thecatalyticrea…  相似文献   

19.
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   

20.
Keggin type polyoxometalates (POMs)whoserepresentativeisH3PW12 O4 0 (PW12 )exhibitsauniquecombinationof physicalandchemical properties .Theyhavebeenwidelyusedasacidcatalystsinhomo geneousandheterogeneousreactionsystems .Howev er ,thecatalyticactivityofPW12 issolimi…  相似文献   

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