Ring-opening aminolysis of sesquiterpene lactones: An easy entry to bioactive sesquiterpene derivatives. Synthesis of (+)-β-cyperone and (−)-eudesma-3,5-diene from santonin
作者:Gonzalo Blay、Luz Cardona、Begoña García、Cristina L. García、JoséR. Pedro
DOI:10.1016/0040-4020(96)00571-6
日期:1996.7
Santonin (1) and other sesquiterpene lactones (2–3) react with pyrrolidine and other cyclic secondary amines to afford γ-hydroxyamides, which by elimination with mesyl chloride in pyridine-benzene at 80°C give unsaturated amides 4a-4c, 5a-5c and 6. Starting from amides 5a-5c a series of bioactive compounds against Locusta migratoria have been prepared, differing in the oxidation states of the C-3 and
桑坦宁(1)和其他倍半萜内酯(2-3)与吡咯烷和其他环状仲胺反应生成γ-羟酰胺,然后在80°C下通过在吡啶苯中的甲磺酰氯消除,得到不饱和酰胺4a-4c,5a- 5c和6。从酰胺5a-5c开始,已经制备了一系列针对东方蝗的生物活性化合物,其C-3和C-12碳原子的氧化态不同。从酰胺5a和6开始,两个共轭二烯-阿魏糖(())-β-香芹酮(15)和(-)eudesma-3,5-二烯(19))的制备涉及了对eudesmane骨架侧链的酰胺基的修饰。