Abstract:
STUDIESOFTECHNETIUMCHEMISTRYXI.StudyofBrainRetentionAbilityandinVitroStabilityof99Tcm-d,l-PAOComplexesMiaoYubinZhangHuabeiLiuBoli(DepartmentofChemistry,BeijingNormalUniversity,Beijing100875)ABSTRACTBasedoncrystaldataof99Tcm-d,l-HMPAO,thestructuresof99Tcm-d,l-PAOcom-plexes(99Tcm-d,l-HMPAO,99Tcm-d,l-CBPAO,99Tcm-d,l-OCBPAO,99Tcm-d,l-EOCBPAO,99Tcm-d,l-IPOCBPAO)areoptimized.Thetotalenergyofmolecule,dipole-mentofmolecule,netchargeofatomandthemolecularorbitalenergyofHOMOandLUMOarecalculated.Theresultsindicatethatbrainretentionabilityof99Tcm-d,l-PAOcomplexesdependsontheinvitroinstabilityofthecomplexes,whichareconsistentwiththeresultsofexperiment.Theinfluenceofmolecularpolarityandintermolecularhydrogenbondonmolec-ularlipophilicityofcomplexesareinvestigated.Theconclusionprovidesthetheoreticalbasisforstudyingreasonabledrugdesignandbrainretentionmechanism.Keywordsbrainimagingagent99Tcm-d,l-PAOcomplexesbrainretentionabilitymethodofINDO/linvitroinstability