1]undecenetriol useful as a medicinal chemistry scaffold has been developed starting from l‐ribose. The sequence involves an oxidation/Grignard addition sequence and a challenging ring‐closing metathesis (RCM) reaction as the ring forming step. Exploration of the RCM substrate protecting groups revealed the key factor for successful nine‐membered medium ring formation to be conformational bias of the reacting
从 l-
核糖开始,已开发出一种实用的新型氧杂双环 [6.2.1]
十一碳烯三醇,可用作药物
化学支架。该序列涉及氧化/格氏加成序列和具有挑战性的闭环复分解 (RCM) 反应作为环形成步骤。对 RCM 底物保护基团的探索揭示了成功形成九元中环的关键因素是 RCM 底物的反应烯烃通过非常庞大的甲
硅烷基醚保护基团的构象偏差。该合成还允许获得差向异构三醇以及九元环的饱和和不饱和变体。氧杂双环[6.2.1]
十一碳烯三醇的中环构象通过 X 射线晶体学测定,并通过 NMR 实验与溶液态构象相关联。