简介:InfluenceoftheeffectivefermionhexadecapoleforcenewlyincorporatedinamicroscopicsdgIBM-1onspectra,reducedE2andE4transitionmatrixelements(T(E2)sandT(E4)s)intheeven-evenplatinumisotopes(A=192,194,196,198)isinvestigatedintermsofnumericalcalculations.ItisfoundthattheintroducedinteractioncausesonlylimitedmodificationtothespectrumandT(E2)s,apartfromafewexceptions.However,itplaysanessentialroleindescribingE4transitions.Thusinthecasethattheinteractionisincorporatedwithcertainstrength,areasonabledescriptionofalltheE4transitionsintheplatinumisotopesisreachedinthemicroscopicsdgIBM-1incomparingbothtoexperimentaldataandtheresultscalculatedinphenomenologicalbosonmodel.``
简介:Anovelseriesofpyrido[1,2-e]purin-4(3H)-onederivativescontainingpolarsubstituentson5'-positionweredesignedandpreparedaspotentialPDE5inhibitors.Thispaperreportsthesyntheticroutes,1H-NMRdata,andthePDE5inhibitoryactivitiesofthetargetcompounds.Thepolarpiperazinylgroupcontained(on5'-position)compound,3B2,showedthehighestactivityamongthetestedderivativesbutlesspotencythansildenafil1.
简介:Startedfrom5-hydroxy-2-pentanone,(R)(E)-3,7-dimethyl-2-octene-1,8-dioicacid,callosobruchusicacid,wassynthesizedviafivestepswithD-(-)-camphorsultamasthechiralauxiliary.Itwasofgoodopticalpurityandyield.