Fluorinated photosensitizers: synthesis, photophysical, electrochemical, intracellular localization, in vitro photosensitizing efficacy and determination of tumor-uptake by 19F in vivo NMR spectroscopy
作者:Suresh K Pandey、Amy L Gryshuk、Andrew Graham、Kei Ohkubo、Shunichi Fukuzumi、Mahabeer P Dobhal、Gang Zheng、Zhongping Ou、Riqiang Zhan、Karl M Kadish、Allan Oseroff、S Ramaprasad、Ravindra K Pandey
DOI:10.1016/j.tet.2003.10.016
日期:2003.12
starting from pyrroles, a series of fluorinated porphyrins were synthesized by following the MacDonald reaction conditions. Upon reaction with osmium tetroxide, a fluorinated porphyrin containing four trifluoromethyl groups (12 fluorine units) was converted into the related chlorin and bacteriochlorin which exhibited long-wavelength absorptions at 652 and 720 nm, respectively. All compounds produced good
对于体内NMR研究,从吡咯开始,通过遵循MacDonald反应条件,合成了一系列氟化卟啉。与四氧化反应后,含四个三氟甲基(12个氟单元)的氟化卟啉被转化为相关的二氢卟酚和细菌二氢卟酚,它们分别在652和720 nm处表现出长波吸收。所有化合物均产生了良好的单线态氧生产效率。对具有和不具有氟取代基的九种卟啉的比较研究表明,氟化基团的存在对卟啉,二氢卟酚或细菌二氢卟啉的光物理性质没有不利影响。研究的化合物的第一和第二单电子还原电位(vs SCE)介于-1.29和-1.49 V之间和-1.66和-1之间。PhCN中84 V含0.1 M TBAP。紫外可见光谱电化学数据表明,在第一次还原和第一次氧化后,会形成π阴离子和π阳离子自由基。体内19 F MR对具有十二个当量氟的代表性氟标记化合物的19 F MR研究证实,通过在小鼠足背上植入2×10 5个细胞,在小鼠(C3H / HeJ)中植入了氟标记的敏化剂(C3H