双立体 (H/H1) 同位体的可溶性数量差异
Tsuneomi Kawasaki1, Hiroki Kubo1, Satoshi Nishiyama2
1Department of Applied Chemistry, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
Journal of the American Chemical Society
|November 5, 2021
概括
化同位素 (/) 可以诱导有机化合物中的性. 这项研究增强了微妙的溶解性差异,以实现从同位素基质前体中合成高分离选择性氨基酸.
科学领域:
- 有机化学
- 立体化学
- 化学合成
背景情况:
- 有机化合物可以通过同位素替代变为奇拉.
- 光谱方法检测出同位素性,但由于微妙的能量差异,其在选择性反应中的作用尚不清楚.
- 计算同位素之间的能量差异在计算上具有挑战性,而物理性质差异在很大程度上仍未报告.
研究的目的:
- 为了证明二聚体同位素之间的小能量差异可以被放大.
- 调查增强的物理性质差异对酶选择性合成的潜力.
- 建立同位素和氨基酸的同位素性之间的联系.
主要方法:
- 从同位素奇拉胺,阿奇拉胺和化中合成α-aminonitriles的二聚体同位素 (2H/1H).
- 利用二聚体同位素之间的可溶性差异来诱导性失衡.
- 固态度增强以实现高立体效果.
- 将α-aminonitriles转化为奇拉性α-氨基酸的水解
主要成果:
- 在二聚合物 (2H/ 1H) α- 氨基尼特利之间观察到可测量的溶解性差异.
- 这种可溶性差异引发了性失衡,导致固态性增强 (> 99% 选择性).
- 立体化学结果与同位素奇拉氨基前体的反体过量直接相关.
- 通过使用同位素性来实现高度选择性的斯特雷克氨基酸合成.
结论:
- 在分子层面的微小能量差异可以扩大为宏观的物理性质差异,比如溶解度.
- 通过双增强过程,可以有效地将同位素化转化为α-氨基酸的同位素化.
- 这项工作为酶选择性合成提供了一条新的途径,并提供了对前生物化学进化的见解.
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