Kinetic Control of Proline Amide Rotamers: Total Synthesis of <i>trans,trans</i>- and <i>cis,cis</i>-Ceratospongamide
作者:Shaojiang Deng、Jack Taunton
DOI:10.1021/ja017160a
日期:2002.2.1
proline rotamers. Remarkably, these rotamers do not detectably interconvert at temperatures up to 100 degress C. Here we report high-yielding syntheses of each rotamer and demonstrate that the threonine-derived oxazoline plays a critical role in determining the kinetic distribution of conformational isomers.
Ceratospongamide 是一种环肽天然产物,作为两种脯氨酸旋转异构体的混合物进行生物合成。值得注意的是,这些旋转异构体在高达 100 摄氏度的温度下无法检测到相互转化。在这里我们报告了每个旋转异构体的高产合成,并证明苏氨酸衍生的恶唑啉在确定构象异构体的动力学分布中起着关键作用。