Targeting nitric oxide synthase with 99mTc/Re-tricarbonyl complexes containing pendant guanidino or isothiourea moieties
作者:Bruno L. Oliveira、Paula D. Raposinho、Filipa Mendes、Isabel C. Santos、Isabel Santos、António Ferreira、Carlos Cordeiro、Ana P. Freire、João D.G. Correia
DOI:10.1016/j.jorganchem.2010.09.019
日期:2011.3
conjugates bearing a pyrazolyl-diamine chelating unit for stabilization of the fac-[M(CO)3]+ core (M = 99mTc, Re) and pendant guanidino (L1 = guanidine, L2 = N-hydroxyguanidine, L3 = N-methylguanidine, L4 = N-nitroguanidine) or S-methylisothiourea (L5) moieties for iNOS recognition. L1–L5 reacted with fac-[M(CO)3(H2O)]+, yielding complexes of the type fac-[M(CO)3(k3-L)]+ (M = Re/99mTc; 1/1a, L = L1; 2/2a
用特定的放射性探针在体内诱导型一氧化氮合酶(iNOS)的可视化可以提供与该酶上调相关的疾病的宝贵见解。为此,我们合成了带有吡唑基-二胺螯合单元的新型共轭物,用于稳定fac- [M(CO)3 ] +核(M = 99m Tc,Re)和胍基侧基(L 1 =胍,大号2 = ñ -hydroxyguanidine,大号3 = ñ -methylguanidine,大号4 = ñ-硝基胍)或S-甲基异硫脲(L 5)部分用于iNOS识别。L 1 – L 5与fac- [M(CO)3(H 2 O)] +反应,生成fac- [M(CO)3(k 3 -L)] +(M = Re / 99m Tc;1 / 1a,L = L 1;2 / 2a,L = L 2;3 / 3a,L =L 3; T = 1。4 / 4a,L = L 4 ; 5 / 5a,L = L 5),其已通过化学和放射化学中