A Stereocontrolled Synthesis of a Phosphorothioate Cyclic Dinucleotide-Based STING Agonist
作者:James Kempson、Huiping Zhang、Xiaoping Hou、Lyndon Cornelius、Rulin Zhao、Bei Wang、Zhenqiu Hong、Martins S. Oderinde、Joseph Pawluczyk、Dauh-Rurng Wu、Dawn Sun、Peng Li、Shiuhang Yip、Aaron Smith、Janet Caceres-Cortes、Darpandeep Aulakh、Amy A. Sarjeant、Peter K. Park、Lalgudi S. Harikrishnan、Lan-ying Qin、Dharmpal S. Dodd、Brian Fink、Gregory Vite、Arvind Mathur
DOI:10.1021/acs.joc.1c00784
日期:2021.7.2
We describe a stereodefined synthesis of the newly identified non-natural phosphorothioate cyclic dinucleotide (CDN) STING agonist, BMT-390025. The new route avoids the low-yielding racemic approach using P(III)-based reagents, and the stereospecific assembly of the phosphorothioate linkages are forged via the recently invented P(V)-based platform of the so-called PSI (Ψ) reagent system. This P(V)
我们描述了新发现的非天然硫代磷酸酯环二核苷酸 (CDN) STING 激动剂 BMT-390025 的立体合成。新路线避免了使用基于 P(III) 试剂的低产外消旋方法,硫代磷酸酯键的立体有择组装是通过最近发明的 P(V) 基平台,即所谓的 PSI (Ψ) 试剂构建的系统。这种 P(V) 方法允许完全控制基于 P 的连接的手性,并提供绝对构型的确凿证据。新方法提供了稳健的程序,从先进的核苷开始,分八步制备立体定义的 CDN,后期直接液滴分离和伸缩步骤实现了有效的放大,以 15% 的总产率进行,以产生数克数量的 CDN .