A [3C + 3C] annelation using 1, 1-bis(ethulthio)-2-propanone was applied to a new synthesis of the aporphine alkaloids. Condensation of the ketone with the Mannich base gave two isomeric cyclohexenones, which were converted into the aporphine framework by aromatization. (±)-Glaucine and (±)-nantenine were prepared by employing this new aromatic synthesis.
使用 1, 1-双(乙
硫基)-2-
丙酮进行的[3C + 3C]环化反应被应用于一种新的卟吩
生物碱的合成。酮与曼尼希碱缩合后得到两个异构
环己烯酮,通过芳香化作用将其转化为卟吩框架。通过这种新的芳香合成法,制备出了 (±)-Glaucine 和 (±)-nantenine 。