ESR STUDIES OF SPIN-LABELED DAUNOMYCIN AND ADRIAMYCIN

本项目的目标有两个方面：（1）综合 和表征的一些自旋标记的衍生物， 柔红霉素和阿霉素有望应用于 癌症治疗，和（2）实验研究，使用 多频（Q带、X带、S带和L带）电子 磁自旋-自旋的自旋共振（ESR）光谱 自旋标记药物和附近的 铜（II）原子。 关于ESR测量， 将使用矩阵对角化计算线形 技术. 铜的价值…硝酰基自旋-自旋 耦合常数J 0将由温度确定 ESR信号的面积依赖性。 偶极 铜原子和硝酰基之间的距离 三重态将使用两种线型 零场模拟和一般关系 分裂 旋间距离也将由下式计算： 半场线的相对强度与 用伊顿公式计算全场线 “磁几何” Cu（II）的...自旋标记药物络合物和金属 然后确定结合位点。

The objectives of this project are twofold: (1) the synthesis and characterization of a number of spin-labeled derivatives of daunomycin and adriamycin expected to have application in cancer treatment, and (2) experimental studies, using multi-frequency (Q-band, X-band, S-band and L-band) electron spin resonance (ESR) spectroscopy, on magnetic spin-spin interactions between the spin-labeled drugs and a near-by copper (II) atoms. In regard to the ESR measurement, the lineshapes will be calculated using matrix diagonalization techniques. The values of the copper...nitroxyl spin-spin coupling constants, J0, will be determined from the temperature dependence of the area of the ESR signals. The dipolar distance between the copper atom and the nitroxyl radical in the triplet state will be estimated using both lineshape simulation and a general relationship for zero-field splitting. The interspin distance will also be calculated from the relative intensity of the half-field line compared to the full-field line using Eatons' formula. The 'magnetic geometry' of the Cu (II)...spin-labeled drug complex and the metal binding site will then be determined.