and (c) indolium iodide. Single crystal X-ray spectroscopy was used to confirm the structure of one of the analogues. The SP analogues were confirmed as being able to isomerize and attain a photostationary state (PSS) upon irradiation with ultraviolet light (UV, 365 nm) in an aqueous environment. UV–visible absorption spectra were recorded to confirm the isomerization properties. The ability of the
使用涉及三个关键中间体的多步方法合成了一类新型螺
吡喃(
SP):( a)四
氟硼酸重氮盐,(b)
肼和(c)
碘化
吲哚。单晶X射线光谱法用于确认类似物之一的结构。证实
SP类似物在
水性环境中经紫外线(UV,365nm)照射后能够异构化并达到光固定态(PSS)。记录紫外可见吸收光谱以确认异构化性质。与
SP或它们的PSS孵育后,通过M
TT分析评估合成的化合物诱导HeLa宫颈癌细胞生长抑制的能力。该IC 50 2个PSS(值PSS-2 ,4),比相应的
SP低14±4倍(26±3μM)。具有最高细胞毒性的化合物
SP-7和PSS-7的IC 50值最低(12μM)。的体外微管蛋白聚合测定法表明,
SP - 7和PSS-7表现出相对于未照射的微管蛋白抑制的最大区别SP-1和
SP-4 。