Synthesis, Crystal Structure and Spectrometry Study of Chiral N-Ethyl-N''''-(2'''',3'''',4'''',6''''-tetra-O-acetyl-β-D-glycosyl)-thiocarbamide

1INTRODUCTIONManynomadicsugarsperformimportantbio-logicalfunctions[1].Theycancontrolvariousgeneexpressionstoadjusttheupgrowth,developmentandreactionoforgans[2].Glycosylisothiocyanateshavebeenwidelyusedasvaluableintermediatesinthesynthesisofglycosylderivatives[3].Theiso-thiocyanatesandglycosylisothiocyanateshavebeenthefocusofsyntheticattentionduringrecentyearsbecauseoftheirpotentialpharmacologicalproperties[4].Theyhavealsoattractedconsiderableinterestduetotheanti-HIVactivityshownby1-deoxy…     

One-dimensional Hydrogen-bonded Polymer Based on Tetra-iso-butyl-resorcin[4]arene and 2,6-Diacetylpyridine

1INTRODUCTIONResorcin[4]arenesarecavity-shapedmacro-cycleswhichcanbeeasilysynthesizedfromresor-cinolandaldehydesinthepresenceofacidiccataly-sis[1].Theyareattachedmuchinterestinthefieldofsupramolecularchemistryasartificialreceptorsandstartingmaterialsforthepreparationofmoresophis-ticatedmolecules[2].Duetotheirstructuralfeaturestheyplayanimportantroleashostmoleculesforavarietyofneutralandchargedguestcompounds[3].Theresorcin[4]arenesusuallyadoptfourdifferentcon-formers,crown(rccc,C4),boat(rc…     

Synthesis and Characterization of Rh—Co Butterfly Clusters Capped by Functionally Substituted 1—Alkynes

1INTRODUCTIONThemixed-transition-metalclustershavehighpotentialtoserveasefficientcatalystsforavarietyofhomogeneouscatalyticreactionsaswellasuniquereagentsfororganicsyntheses[1].Ithasbeenreportedthatthereactionsof[Rh2Co2(CO)12]withseveralalkynestogiveRh-Comixed-metalbutterflyclusters[1～4].Inaddition,thereactionofsilylformylationof1-hexynewiththehydro-formylationofcyclohexene,1-penteneandstyrenehavealsobeeninvestigatedbyusing[Rh2Co2(CO)ascatalyst[5].Inordertogainmoreunderstandingaboutt…     

Syntheses and Crystal Structures of two Ring—like {Mo18}Cluster Compounds

1INTRODUCTIONThepolyoxomolybdateshavebeenwidelyresearchedinmanyfieldssuchascatalysis,biology,medicineandmaterialsciencebecauseoftheirrichphysicalandchemicalproperties[1].Thoughmanypolyoxomolybdateshavebeenreported[2],furtherresearchisstillnecessaryforthestudyof搑eduction-oxidation-reconstitution?self-assemblyprocesses[3,4].Polyoxomolybdatesarenormallybuiltupundersuitableconditionsbyafewbuildingblockssuchas{Mo2},{Mo8}and{Mo9}inself-assemblyway[5,6].The{Mo18}clustershaveseveralstructuralty…     

Synthesis and Crystal Structure of O,O''-Diisopropyl-5-(4-chlorophenyl)-1-hydroxy-2E,4E-pentadienylphosphonate

1　INTRODUCTIONAbscisicacid(ABA)isoneofplanthormoneswhichwasisolatedfromyoungcottonfruitsin1963[1].Itnotonlyinhibitsplantgrowth,butalsoprotectsplantsa-gainstdeprivationofwaterduringdroughtdays[2].Hydroxyalkylphosphonicacidsandtheirderivativesappeartobeveryimportantfortheirwidebiologicalactivitiesintheinhibitionofenzymes,fungicidesandplantgrowthregulation[3].Wedesignedandsynthesizedthetitlecompound4,theunsaturatedphosphonateanaloguesofABA,whichexhibitsplantinhibitoryactivityontheelongati…     

Bondings and Interactions in Fe-CO:Pairing versus Unpairing Mechanism

Therehavebeenagreatdealofexperimenta1aswellastheoreticaleffortsincharacterizingthenatureofbondingsandinteractionsintheM-COIS[l'2].ItisnowgenerallyacceptedthattheM-CObondingismainlyduetothettbackdonationfromthemetald.orbitalstotheCO2x*andthemetal-COa..interactionisrepu1sive[3].AsshownbyBlombergetal,anefficientwaytoreducethisarepulsionisthe4s-3d.hybridization[41.SofarasFe-COmolecuIeisconcerned-therearealargenumberofpaperspubIished[1'2].ThetwolowestelectronicstatesofFe-COarepredictedtobe…     

N,N''''-二苄基-苯并咪唑四氯合铜(Ⅱ)化合物的合成、结构和性能研究

0IntroductionAlthoughbiologicalsystemsefficientlyorganizesimpleunitsintoaggregateswithintricateandwonderfulfunctionsbynon-covalentinteractions,self-assem-blyofframeworkswithspecifictopology,interestingpropertiesandfunctionsisstillachallengefochemists[1].Anumberofhydrogen-bondedaggregatehavebeenobtainedbyself-organizationoforganicoorganic-inorganiccomponents[2,3].Hydrogenbondingbetweentheorganiccationandthemetallayerisanimportantissueinunderstandingtheorganic-inorganichybridmaterials,whichinflu…     

Luminescent Tetranuclear Copper（I） Phenylacetylide Complex with Cyclohexyl Isocyanide

1INTRODUCTIONThechemistryofmetalalkynylcomplexeshasattractedmuchattentioninrecentyearsduetothespecificinterestinstructuraltopologyandopticalproperties[1～6].Ithasbeendemonstratedthatoneofthefeasiblestrategiestoattainoligomericmetalalky-nylcomplexesistodepolymerizepolymericspeciesofmetalalkynylsbyusingorganicligandssuchasphosphines[7～11]andisocyanides[12～14].Insomecases,simplemetal-containingcomponentsarealsoavail-abletodepolymerizethepolymericmetalalkynyl,formingalkynyl-bridgedheterometa…     

Synthesis and Crystal Structure of Ethyl 5-Amino-1-[（5′-methyl-1′- t-butyl-4′-pyrazolyl）carbonyl]-3-methylthio-1H-pyrazole-4-carboxylate

1INTRODUCTIONPolarizedketenedithioacetalshavebeenex-tensivelyusedasbuildingblocksinorganicsyn-thesis,especiallyinthesynthesisofheterocycliccompounds[1～6].Pyrazoleanditsderivativesrepre-sentoneofthemostactiveclassesofcompoundspossessingwidespectraofbiologicalactivities.Overthepastfewyears,considerableevidenceshavebeenaccumulatedtodemonstratetheefficacyofpyrazolederivatives,suchasantibacterial[7],fun-gicidal[8],herbicidal[9],insecticidal[10]andotherbiologicalactivities[11,12].Uptonow,alarg…     

《影像科学与光化学》参考文献格式要求

一.专著作者.书名[M].版本(第1版不著录).出版地:出版单位,出版年.起止页码.示例:[1] Griffiths L.Colour and Constitution of Organic Molecules[M].London:Academic Press,1976.25-32.[2]王德海,江棂.紫外光固化材料理论与应用[M].北京:科学出版社,2001.316-319.Wang D H,Jiang L.Theory and Application of UV-curing Material[M].Beijing:Science Press,2001.316-319.二.期刊作者.文章题名[J].刊名,出版年,卷号(期号):起止页码.示例:[1] Kobayashi C A N,Leite A L,Silva T L,et al.Proteomic analysisof urine in rats chronically exposed to fluoride[J].     

《影像科学与光化学》参考文献格式要求

一.专著作者.书名[M].版本(第1版不著录).出版地:出版单位,出版年.起止页码.示例:[1]Griffiths L.Colour and Constitution of Organic Molecules[M].London:Academic Press,1976.25-32.[2]王德海,江棂.紫外光固化材料理论与应用[M].北京:科学出版社,2001.316-319.二.期刊作者.文章题名[J].     

Synthesis and Crystal Structure of N,N''''-Diphenyl-3, 6-diethyl-1,4-dihydro-s-tetrazine-1,4-dicarbonamide

1INTRODUCTIONIthasbeenarousedmoreandmoreinterestsinces-tetrazinewasfirstsynthesizedbyHautgschin1900[1].Thesynthesisofdihydroderivativeof3,6-dimethyl-s-tetrazinewasreportedindetailbySkorianetz[2].UsingX-ray,Jennison[3]foundthat1,6-dihydro-s-tetrazinehashom…     

A Possible Multi-stranded DNA Induced by Acid Denaturation-renaturation

INTRODUCTIoNltisknownthatDNAcanadoptdifferentstructuresaccordingtodifferentnucleotidesequenceandenvironment[1].Underphysio1ogicalconditions,specificsequenceDNAcanformnon-B-DNAstrUctUres,suchasZ-DNA,cruciformDNA,triplexandquadrupIexDNA[l-4].lnl99O,Baietal.directlyobservedwithSTMbraid-liketriple-strandedDNAformingfromtheheat-denaturedA-DNAHindIIIinvitro[5,6].Inl993,caoetal.investigatedtheheat-denatUredx-DNAHindInsystemindetailusingcommonbiologicalmethods,andsuccessfullyisol…     

Synthesis and Crystal Structure of 2-Amino-3-cyano- 4-（3,4-dimethoxyphenyl）-4H-benzo[h]chromenes

1INTRODUCTION4H-Chromeneisaconstructionunitofsomenaturalproducts.4H-Chromeneswithaminoandcyanogroupsarealsosynthonofsomespecialnaturalproducts[1,2].Thesubstituted4H-chromenespossessawiderangeofpharmacologicalactivi-ties[3～5].Inordertoinvestigatetheactivi…     

The Synthesis, Luminescence and Energy Transfer of the Binary and Ternary Complexes of Rare Earth with Aminobenzoic Acids and 1,10-Phenanthroline

Inrecentyears.therehasbeenagrowingintereStinthePOtenhalaPPlicahonofeuroPium~terbiumcoordinationcompoundsasltalnescentInaerialandltalnescentprobesforavarietyofchendcalandbiologitalp'Stems[l].ConsiderableinveingationswerefocusedontheltalnescenceproPenies,energi'matchandenergr'transferofaschelateswithochtones[2'3].Howevr,littleattentionha5beenPaidtotheltalnescentlanthanidecomplexeswithcarbonyIicacids14].ComParedtotherareedchelateswith6-diketones.thecomPlexeswitharomaticCarboxylicacidsoffCra…     

二（1N-苄基-苯并咪唑）二氯合钴配合物的晶体结构、电化学和热稳定性能研究(英)

0IntroductionBenzimidazoleisaninterestingheterocyclicringbecauseitispresentinvariousnaturallyoccurringdrugs,suchasomeprazole,astemizoleandemedastinedifumarate[1].Theefficacyofsubstitutedbenzimida鄄zolesinthetreatmentofparasiticinfectionsiswellknown[2,3].B…     

Synthesis and Crystal Structure of 3,4—Bis（azidoacetamino）furazan

1INTRODUCTIONDuringthepastthreedecades,1,2,5-oxadiazole(furazan)hasbeenstudiedintheN.D.ZelinskyInstituteofOrganicChemistry[1,2],anditwasfoundthatthearomaticityoffurazanringusuallyincreasesthethermalstabilityofitsderivativesandtheplanarityoftheringprovidesthemwithhighdensity.TheweaknessoftheNObondsinfurazanwassuggestedbyananalysisofitsmass-spectrum[3].Itagreeswiththeresultsoftheresonanceformsoffurazan,whichiscalculatedbySaegebrath[4].Thereby,whenthechloroacetaminogroupwasintroducedintot…     

{[Gd(DMF)_3(DMSO)(H_2O)_3](μ-CN)[Fe(CN)_5]}·2H_2O的合成,结构表征和磁性(英文)

0IntroductionThefirstmolecule鄄basedmagnetswerereportedin1986[1].Duringthelasttwodecades,moreandmoreattentionhasbeenpaidtothesynthesisofmolecule鄄basedmagnets,especiallytoPrussianBlueanalogu鄄es[2].TheoldPrussianBlueanalogueshavebeenbroughtuptodateduetoth…     

稀土铽离子对辣根过氧化物酶活力指数的影响(英)

0IntroductionHorseradishperoxidase(HRP)isaplanthemeenzymecatalyzingoxidationofawidevarietyofaro鄄maticmoleculesbyhydrogenperoxideanditisthemostwidelystudiedmemberoftheperoxidasefamily[1~3].ThecrystalstructureofHRPhasbeensolved[2].ThestructuralfeaturesofHR…     

COMBINATORIAL SYNTHESIS OF MANNICH BASES IN SOLUTION/POLYMER REAGENT WORKUP

1.INTRODUCTIONCombinatorialsynthesisisapowerfultoolforpreparationanddiscoveryofdrugleads[1].However,becauseofthelackofefficientanalyticalmeanstocharacterizetheintermediatesandsmallamountofbyproductsonthepolymersupportsproducedinsolid-phasesynthesis,manychemistshaveturnedtheirintereststosolution-phasemethodsforlibrarygenerationinsteadofsolid-phasesynthesis[2].Buttheconventionalseparationtechniquescannotmeettherequirementtopurifyeveryproductofasolution-phaselibrary,thusthesolid-phasescavenge…