Psoralenamines. 3. Synthesis, pharmacological behavior, and DNA binding of 5-(aminomethyl)-8-methoxy-, 5-[[(3-aminopropyl)oxy]methyl]- and 8-[(3-aminopropyl)oxy]psoralen derivatives
作者:John B. Hansen、Peter Bjerring、Ole Buchardt、Peter Ebbesen、Anders Kanstrup、Gunnar Karup、Peter H. Knudsen、Peter E. Nielsen、Bengt Norden、Birgitta Ygge
DOI:10.1021/jm00146a006
日期:1985.8
that only the 8-substituted psoralens bind to DNA by intercalation. Furthermore, the ability to photoinduce interstrand cross-links in calf thymus DNA, in vitro, was as efficient as that of 8-methoxypsoralen for the 8-substituted psoralens, which were up to 25 times as efficient as the 5-substituted psoralens. Four of the psoralens studied were radiolabeled and used to study photobinding to DNA. Analogously
5-(氨基甲基)-8-甲氧基补骨脂素,8-[[(3-氨基丙基)氧基]补骨脂素和5-[[[[3-(三甲基氨基)丙基]甲基] -8-甲氧基补骨脂素的一系列衍生物合成,并研究其作为PUVA试剂的潜力。虽然发现所选补骨脂素的DNA缔合常数为10(5)-10(6)L mol-1,与有效结合相对应,但流式线性二色性研究表明,只有8个取代的补骨脂素通过嵌入与DNA结合。此外,体外在小牛胸腺DNA中光诱导链间交联的能力与8-取代的补骨脂素的8-甲氧基补骨脂素一样有效,其效率是5-取代的补骨脂素的25倍。对所研究的补骨脂素中的四个进行了放射性标记,并用于研究与DNA的光结合。与交叉绑定结果类似,8取代的补骨脂素比5取代的补骨脂素更有效地进行光键合,而光结合交联比只有很小的差异。与8-甲氧基补骨脂素相比,氨基补骨脂素对环己烯和2'-脱氧胸苷的光反应性得到增强,当氨基接近呋喃香豆素环系统时,这种作用最为明显。在体外,大多数新化合物对NHIK