作者:Lijuan Jiao、Weidong Pang、Jinyuan Zhou、Yun Wei、Xiaolong Mu、Guifeng Bai、Erhong Hao
DOI:10.1021/jo201754m
日期:2011.12.16
Halogenated BODIPYs are important synthetic precursors and potential sensitizers for photodynamic therapy (PDT). Electrophilic bromination of pyrrolic-unsubstituted BODIPYs using bromine regioselectively generated mono- to heptabromoBODIPYs in a stepwise fashion in good to excellent yields. These resultant bromoBODIPYs were applied for regioselective substitution and Suzuki coupling reaction to generate
卤代BODIPY是光动力疗法(PDT)的重要合成前体和潜在的敏化剂。使用溴区域选择性地逐步生成单溴到七溴BODIPY的吡咯未取代的BODIPY进行亲电溴化,收率好至极好。这些所得bromoBODIPYs施加用于区域选择性取代和Suzuki偶联反应,以生成BODIPYs 4,5,6,和7产量高到极好。根据NMR和X射线分析结果,逐步溴化首先在2,6-,然后在3,5-,最后在1,7-位发生,而区域选择性取代首先在3,5-发生,然后在发色团的1,7位。研究了这些生成的BODIPY的光谱性质,显示了这些bromoBODIPY作为PDT的敏化剂的潜在应用。