1,3-Dipolar cycloaddition of cycloimmonium salts and 4-(trimethylsilyl)-3-butyn-2-one to access new functionalized indolizines with potential cytostatic activity
作者:Andreea Zubaş、Alina Ghinet、Sergiu Shova、Elena Bîcu
DOI:10.1039/d2nj05257a
日期:——
4-(trimethylsilyl)-3-butyn-2-one was an effective dipolarophile in the [3+2] cycloaddition reaction with cycloimmonium salts to obtain non-silicon adducts, namely 1-acetylindolizines. In some cases, two possible isomeric trimethylsilyl-containing adducts were also obtained. The structure of these silylated adducts has been found by X-ray crystallography to be 1-acetyl-2-trimethylsilyl-indolizines and
该研究表明,4-(trimethylsilyl)-3-butyn-2-one 在与环亚铵盐进行 [3+2] 环加成反应以获得非硅加合物,即 1-acetylindolizines 时是一种有效的亲偶极试剂。在某些情况下,还获得了两种可能的含三甲基甲硅烷基加合物。这些甲硅烷基化加合物的结构已通过 X 射线晶体学发现为 1-acetyl-2-trimethylsilyl-indolizines 和 1-trimethylsilyl-2-acetylindolizines。比较了 4-(trimethylsilyl)-3-butyn-2-one 与 3-butyn-2-one 在 [3+2] 环加成反应中的性能。就抑制 NCI-60 癌细胞体外生长的生物学潜力而言,将所得 1-乙酰基或 2-乙酰基二氢吲嗪与先前描述的 3-乙酰基或 1-羧乙基二氢吲嗪进行了比较。