Iminolactones as tools for inversion of the absolute configuration of α-amino acids and as inhibitors of cancer cell proliferation
作者:Christina Mernøe Jensen、Hsiao-Qing Chow、Ming Chen、Lin Zhai、Karla Frydenvang、Huizhen Liu、Henrik Franzyk、Søren Brøgger Christensen
DOI:10.1016/j.ejmech.2016.02.037
日期:2016.5
give a diastereomeric ester mixture. Only iminolactones of l-amino acids were formed after cyclization of (1S,2S,5S)-2-hydroxypinan-3-one, and correspondingly only d-amino acid iminolactones were formed after reaction with (1R,2R,5R)-2-hydroxypinan-3-one. The protocol thus enables inversion of the absolute configuration of amino acids. Some members of the prepared library of iminolactones displayed significant
通过将几种2-羟基酮与许多N-保护的d-和l -α-氨基酸酯化来制备亚氨基内酯文库。一些羟基酮是萜烯类来源的,而其他一些则是通过合成获得的。在中间体酯进行N-脱保护之后,游离胺自发地与酮缩合形成亚氨基内酯。将具有d-和l -α-氨基酸的(1S,2S,5S)-2-羟基pinan-3-one的酯部分聚合在α-碳原子上,得到非对映体酯混合物。(1S,2S,5S)-2-羟基pinan -3-one环化后仅形成1-氨基酸的亚氨基内酯与(1R,2R,5R)-2-羟基pinan -3-one反应后,形成d-氨基酸亚氨基内酯。因此,该方案能够反转氨基酸的绝对构型。制备的亚氨基内酯文库的某些成员对三种癌细胞系(EL4,MCF7,PC3)表现出显着的抗增殖作用,而对非恶性细胞系(McCoy,MCF10A,NIH3T3)的影响不明显。因此,亚氨基内酯似乎是制备选择性影响恶性细胞系增殖的药物的潜在先导结构。