Enantioselective Sulfonimidamide Acylation via a Cinchona Alkaloid-Catalyzed Desymmetrization: Scope, Data Science, and Mechanistic Investigation,Journal of the American Chemical Society

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Enantioselective Sulfonimidamide Acylation via a Cinchona Alkaloid-Catalyzed Desymmetrization: Scope, Data Science, and Mechanistic Investigation
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2024-03-13 , DOI: 10.1021/jacs.4c00374
Brittany C Haas ₁ , Ngiap-Kie Lim ₂ , Janis Jermaks ₂ , Eden Gaster ₃ , Melody C Guo ₃ , Thomas C Malig ₄ , Jacob Werth ₁ , Haiming Zhang ₂ , F Dean Toste ₅ , Francis Gosselin ₂ , Scott J Miller ₃ , Matthew S Sigman ₁

Affiliation

Methods to access chiral sulfur(VI) pharmacophores are of interest in medicinal and synthetic chemistry. We report the desymmetrization of unprotected sulfonimidamides via asymmetric acylation with a cinchona-phosphinate catalyst. The desired products are formed in excellent yield and enantioselectivity with no observed bis-acylation. A data-science-driven approach to substrate scope evaluation was coupled to high throughput experimentation (HTE) to facilitate statistical modeling in order to inform mechanistic studies. Reaction kinetics, catalyst structural studies, and density functional theory (DFT) transition state analysis elucidated the turnover-limiting step to be the collapse of the tetrahedral intermediate and provided key insights into the catalyst-substrate structure–activity relationships responsible for the origin of the enantioselectivity. This study offers a reliable method for accessing enantioenriched sulfonimidamides to propel their application as pharmacophores and serves as an example of the mechanistic insight that can be gleaned from integrating data science and traditional physical organic techniques.

中文翻译：

通过金鸡纳生物碱催化的去对称化进行对映选择性磺酰亚胺酰化：范围、数据科学和机理研究

获取手性硫 (VI) 药效团的方法在药物和合成化学中引起了人们的兴趣。我们报道了通过金鸡纳次膦酸酯催化剂的不对称酰化来实现未保护的磺酰亚胺的去对称化。所需产物以优异的产率和对映选择性形成，没有观察到双酰化。数据科学驱动的底物范围评估方法与高通量实验 (HTE) 相结合，以促进统计建模，从而为机理研究提供信息。反应动力学、催化剂结构研究和密度泛函理论（DFT）过渡态分析阐明了四面体中间体塌陷的周转限制步骤，并为导致催化剂起源的催化剂-基质结构-活性关系提供了关键见解。对映选择性。这项研究提供了一种可靠的方法来获取对映体富集的磺酰亚胺，以推动其作为药效团的应用，并作为可以从整合数据科学和传统物理有机技术中收集的机制见解的一个例子。

更新日期：2024-03-13

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