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1.
^99mTc-ECD是目前脑显像剂中一种较为理想的放射性诊断药物。本文介绍了从基本原料(L)半胱氨酸开始合成配体ECD(N,N”-乙撑-双-L-半胱氨酸乙酯),采用锡作还原剂实现了一步法^99mTc标记ECD,并对制备的^99mTc-ECD进行了初步动物实验以评价其生物学性能。  相似文献   

2.
THE APPLICATION OF Cu(facam)2 TO THE ASYMMETRIC CYCLOPROPANATION OF 2,5-DIMETHYL-2,4-HEXADIENETHEAPPLICATIONOFCu(facam)2TOTHE...  相似文献   

3.
HYDROLYTICCLEAVAGEOFACMET-GLYPROMOTEDBYCIS-[Pd(MET)(D2O)2](NO3)2¥XiaoHuaCHEN;LongGenZHU;N.M.Kostic(CoordinationChemistryInsti...  相似文献   

4.
DIRECTFORMATIONOFTETRAQUINANESKELETONBYINTRAMOLECULARARENE-OLEFINmeta-CYCLOADDITION¥CongZHANG;SongFuWUandXiaochuanGUO(Institu...  相似文献   

5.
ELECTRON-TRANSFERINPOLYNUCLEARCYANO-BRIDGEDCOMPLEXOFTHETYPE[Co(Ⅲ)L_3-μ-Nc-FeⅡ)(CN)_5]~-(L=en)ShuZhongZHAN;XiaoYuanCHEN;QingJin?..  相似文献   

6.
MOLECULARMECHANICALANDQUANTUMCHEMICALCALCULATIONONACYLATIONREACTIVITYFOR1-(NITROSUBSTITUTEDANILINO)-4-SUBSTITUTED-2,6-PIPERAZ...  相似文献   

7.
THE4~Σ-STATESOFTHEFORADICAL¥MingBaoHUANG(DepartmentofChemistry,GraduateSchool,AcademiaSinica,Beijing100039)Abstract:Forinvest?..  相似文献   

8.
STUDY ON THE MANNICH-TYPE REACTION OF P-TOLUENESULFONAMIDE¥RuYuCHEN;QingDAI(InstituteofElemento-OrganicChemistry,NankaiUniver...  相似文献   

9.
α-OXOKETENECYCLICDITHIOACETALSCHEMISTRY──REACTIONOFα,α-DIOXO(ESTER)KETENECYCLICDITHIOACETALSWITHBUTANONE¥ZaiMingZHU;YongTingX...  相似文献   

10.
THEEXCITEDSTATESANDVIBRATIONALFREQUENCIESOFBli:(e=0,+1,-1)CLUSTERSTHEEXCITEDSTATESANDVIBRATIONALFREQUENCIESOFBli:(e=0,+1,-1)C...  相似文献   

11.
THE NON-TEMPLATE SYNTHESIS OF MACROCYCLIC SCHIFF BASE DERIVED FROM THIOPHENE,AND ITS Ag(Ⅰ),Hg(Ⅱ) COMPLEXESTHENON-TEMPLATESYNT...  相似文献   

12.
(E)-β,γ-UNSATURATEDNITRILESFROMDIMETHYLSULFONIUMCYANOMETHYLIDEAND9-ALKENYL-9-BORABICYCLO[3,3,1]NONANESNanShengLI;MinZhiDENG;Y...  相似文献   

13.
王升富  杜丹  邹其超 《分析化学》2002,30(2):178-182
制备了磷钼杂多酸-L-半胱氨酸自组装超分子膜电极(P2Mo18-L-Cys/Au)。采用水平衰减全反射(ATR-FTIR)光谱表征了膜的组成。研究了该膜电极的电化学性质,发现它在1.0 mol/L H2SO4溶液中,于0.0~0.7V(vs.SCE)间CV扫描出现两对稳定、可逆的氧化还原峰,其中峰电位分别为Em1=0.334 V,Em2=0.188V,对应着P2Mo18O_(62)~(6-)的两步2电子-2质子反应;计时库仑法计算了薄膜内的电子传递系数D为5.01 × 10~(-8)cm2·s~(-1)。该膜电极对酸性溶液中的NO_2~-有明显的电催化还原作用,初步探讨了电催化机理。用差分脉冲伏安法(DPV)测定其还原峰电流与NO_2~-的浓度在2.0 ×10~(-6)~2.0 × 10~(-4)mol/L范围内呈良好的线性关系,相关系数为0.9953,检测限5.0×10~(-7)mol/L。该电极用于模拟水样中NO_2~-的测定,结果满意。  相似文献   

14.
THECHEMICALSELECTTVEADDITIONOFGRIGNARDREAGENTTOα-CINNAMOYLKETENE(1,2-ETHYLENE)DITHIOACETALS¥QunxinFANG;ChunLIN;ChangShagZHANG...  相似文献   

15.
IsotopicShiftsoftheinfraredSpectraofCholicAcidandSodiumCholateTIANWen;WENGShi-fu;WUJin-guangandZHANGQing-lian(T.L-CHANG)(Depa...  相似文献   

16.
WATER-SOLUBLE FULLERENE DERIVATIVES,SYNTHESIS AND CHARACTERIZATION OF β-ALANINE C_(60) ADDUCTSWATER-SOLUBLEFULLERENEDERIVATIV...  相似文献   

17.
6-0-DEMETHYL-(19S)-DIHYDROETORPHINE, A NEW SYNTHETIC COMPOUND, ISOLATED FROM CRUDE DIHYDROETORPHINE AS A MINOR BY-PRODUCT6-0-...  相似文献   

18.
A FACILE TOTAL SYNTHESIS OF (±)-SELINA-3, 11-DIEN-9-OLAFACILETOTALSYNTHESISOF(±)-SELINA-3,11-DIEN-9-OLLiJunLIU;ZhaoMingXIONG;...  相似文献   

19.
ASYMMETRICSYNTHESISⅩⅩⅧ:ENANTIOSELECTIVEREDUCTIONOFAROMATICKETONESCATALYZEDBYNEWCHIRALCATALYST-(4R,8R,9S)-CAMPHANE[8,9-b]-1,3,...  相似文献   

20.
PREPARATION, ELECTRICAL PROPERTIES AND CRYSTAL STRUCTURE OF TWO NEW CHARGE-TRANSFER SALTS (BEDT-TTF)_3Cu_2Brx AND (TTM-TTF) (...  相似文献   

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