Synthesis and in vitro cytotoxic evaluation of spiro-β-lactone-γ-lactam scaffolds
作者:Martin Fábian、Jozef Gonda、Dominika Jacková、Miroslava Martinková、Martina Bago Pilátová、Dávid Jáger
DOI:10.1016/j.tet.2020.131144
日期:2020.5
A successful approach to the construction of spiro-β-lactone-γ-lactam synthons 5 and ent-5 as a similar structural motif present in natural products such as oxazolomycins was developed. Two chirons, the protected 3-isothiocyanato-3-C-vinyl-α-d-xylofuranose and its antipode, were employed as the starting material. In order to obtain a lactone-pyrrolidine cyclic framework, a ring-closing metathesis,
开发了成功的方法来构建螺-β-内酯-γ-内酰胺合成子5和ent - 5作为存在于天然产物(如恶唑霉素)中的类似结构基序。将两种被保护的3-异硫氰基-3- C-乙烯基-α - d-木呋喃糖及其对映体作为起始原料。为了获得内酯-吡咯烷环骨架,闭环易位,双键的高度非对映选择性还原和β的形成内酯骨架是关键的转变。筛选最终的对映体药效基团改变癌细胞存活力的能力。