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斯福克斯 (SFox) 胺基酸盐作为多功能甘氨基基捐赠剂用于化学甘氨基化
Alessandra Damico1, Ganesh Shrestha2, Anupama Das1
1Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St Louis, Missouri, 63103, USA. alexei.demchenko@slu.edu.
Organic & biomolecular chemistry
|June 13, 2024
概括
研究人员开发了新的3,3-difluoro-3H-indol-2-ylthio (SFox) 胺基酸盐,用于糖化. 这些稳定但有反应性的硫胺酸盐捐赠体提供了多功能激活和可调整的立体选择性,产生α-或β-糖化物.
科学领域:
- 碳水化合物化学 碳水化合物化学
- 有机合成 有机合成
- 药用化学 医学化学
背景情况:
- 胺基酸是有机合成中的多功能中间体.
- 新型甘氨基基基因捐赠体的开发对于碳水化合物化学至关重要.
- O-和S-胺基酸盐具有不同的反应性.
研究的目的:
- 为了合成新型的3,3-二-3H-英多尔-2- (SFox) 胺基酸盐.
- 为了评估SFox imidates作为化学糖化中的糖系捐赠体.
- 为了研究使用SFox捐赠者的糖化处理的立体化学结果.
主要方法:
- 合成SFox胺基酸盐.
- 使用SFox捐赠体的糖化反应.
- 通过 thiophilic 和 electrophilic 试剂激活 SFox 捐赠体.
- 立体选择性的分析 (α-与β-糖化物对比).
主要成果:
- 已经成功地合成了SFox胺基酸盐.
- 这些化合物起到有效的甘氨基基素捐赠者的作用.
- SFox 模拟物表现出双重反应性,由软和硬的电友反应剂激活.
- 在2-O-烯保护的SFox供体中,完全实现了β-选择性.
- 完全的α-选择性在2-O-化SFox捐赠者身上出乎意料地被观察到.
结论:
- 斯福克斯 (SFox) 胺基体代表了一种新且多功能型的甘氨基基捐赠体.
- 在2-O位置的保护组决定了糖化酶的立体化学结果.
- 斯福克斯 (SFox) 模拟物提供了一个可调节的平台,用于刻板选择性合成糖化物.
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