Synthesis of Novel 4′-Cyclopropyl-5′-norcarbocyclic Adenosine Phosphonic Acid Analogues
摘要:
Novel 4'-cyclopropyl-5'-norcarbocyclic adenosine phosphonic acid analogues were designed and racemically synthesized from propionaldehyde 5 through a de novo acyclic stereoselective route using triple Grignard addition and ring-closing metathesis (RCM) as key reactions. To improve cellular permeability and enhance the anti-HIV activity of this phosphonic acid, SATE phosphonodiester nucleoside prodrug 23 was prepared. The synthesized adenosine phosphonic acids analogues 17, 18, 19, 21, and 23 were subjected to antiviral screening against HIV-1. Compound 23 exhibits enhanced anti-HIV activity than its parent nucleoside phosphonic acid 18.
催化异戊烯基二磷酸酯和二甲基烯丙基二磷酸酯相互转化的2型异戊烯基二磷酸异构酶(IDI-2)包含FMN的紧密结合分子。为了探测反应的机理,合成了被设计为基于机理的不可逆抑制剂的环丙基和环氧底物类似物,并用嗜热栖热菌(Thermus thermophilus)的IDI-2进行了评估。环丙基类似物是替代底物。环氧类似物是不可逆的抑制剂,k I = 0.37±0.07 min -1,K I = 1.4±0.3μM。LC-MS研究表明形成了环氧化物-FMN加合物。