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 sesquiterpenelactones (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