Design, synthesis, and evaluation of N-aroyloxy-2-thiopyridones as DNA photocleaving reagents
作者:Petra Blom、Alan X. Xiang、David Kao、Emmanuel A. Theodorakis
DOI:10.1016/s0968-0896(98)00211-9
日期:1999.5
was shown to cleave DNA at low microM concentrations and was approximately two-orders of magnitude more efficient than the parent N-benzoyloxy-2-thiopyridone (12). Furthermore, the DNA cleavage ladders induced by 16 and 12 were found to be identical and of no significant sequence selectivity. These data suggest that the N-aroyloxy-2-thiopyridones can be used for the design of new DNA photocleaving
N-苯甲酰氧基-2-硫代吡啶酮(12)在可见光(λ&350 nm)照射下可诱导双链DNA中的单链缺口。该发现导致了一系列化合物的设计,其中cri啶基核与N-苯甲酰氧基-2-硫代吡啶酮单元共价连接。合成了这些缀合物(15、16、17和18),并作为新型DNA光裂解试剂进行了评估。对于缀合物16,观察到最佳的光裂解活性,其中使用4个碳的柔性多亚甲基间隔基将氨基ac啶实体连接至硫代吡啶酮。该化合物可在低microM浓度下裂解DNA,其效率比母体N-苯甲酰氧基-2-硫代吡啶酮(12)高约两个数量级。此外,发现由16和12诱导的DNA切割阶梯是相同的,并且没有明显的序列选择性。这些数据表明,N-芳酰氧基-2-硫代吡啶酮可用于设计新的DNA光裂解试剂,并有可能用作“光足迹剂”或“定点光核酸酶”。