简介:Wehavesuccessfullysynthesized1-(2′-Phenyl)cycloproply1-2,3-epoxypropan-1-ol3,whichwillbeappliedtothekineticsstudyofoxiranylcarbinylradical.
简介:Treatmentof4-amino-3-(1-aryl-5-methyl-1,2,3-triazol-4-yl)-5-mercapto-1,2,4-triazoles/2-amino-5-(1-aryl-5-methyl-1,2,3-triazole-4-yl)-1,3,4-thiadiazoleswithbenzaldehyde,acetoneandω-bromoacetophenonewastestedandcompared.ThetitlecompoundsSchiffbases,amides,imidazolo[2,1-b]-1,3,4-thiadiazolesand7H-s-triazolo[3,4-b]-1,3,4-thiadiazineshavebeenconfirmedbyelementalanalyses,^1HNMR,IRandMSspectra.AllthecompoundshavealsobeenscreenedfortheirantibacterialactivitiesagainstB.subtilis,S.aureusandE.coli.
简介:RecombinanthumanGABAAreceptorswereinvestigatedinvitrobycoexpressionofcDNAscodingforα1,β2andγ2subunitsinthebaculovirus/Sf-9insectcellsystem,Asingleaminoacidexchangeα1(asparaticacid151toasparaginorα1(threonine149toglutamine)intheN-terminal,extracellularpartoftheα1subunitinducedabout10folddecreaseinanantagonistpitrazepineaffinity.OtherGABAAreceptorligandshadlittledifferenceintheiraffinity.Itwaslikelythat151and149aminoacidresidueswereessentialforthebindingaffinityandefficacyofpitrazepinetoGABAAreceptorcombinationscontainiαααααααααnganα1subunit.
简介:对端线掷球进攻1-2-1-1全场区域紧逼方法的战术选择进行了分析。
简介: Enantioimericallypure1,l'-bi-2-naphthol(BINOL)1anditsderivativesareimportantchiralligandsandauxiliariesforanumberofasymmetrictransformations1suchasaldolcondensations,alkylations,Diels-Alderreactions,Michaeladditions,epoxidations,etc.Opticallypure1andtheirderivativeshavealsobeenusedextensivelyinchiralrecognition,chiralseparationandintheconstructionoffunctionalisedmaterials2.Furthermore,(R)-and(S)-BINOLarealsofundamentalstartingmaterialsforthesynthesisofalargevarietyofotherchiralbinaphthylssuchasMOP(2c),NOBIN(2d)andBINAP(2e).Asaresultthedevelopmentofefficientandeconomicmethodsforthepreparationofopticallypure1hasattractedmuchattentioninrecentyears3andnovelmethodsfortheresolutionof(±)-1continuetobedeveloped.……