dehydration of the 7-alpha-hydroxyl group of royleanone. The reaction performed in acetic acid and hydrochloric acid under reflux gave an unexpected chlorinated naphtoquinone, with aromatization and opening of one of the rings of the starting material, as major product, besides 6,7-dehydroroyleanone and a complex mixture of other products. The reaction products were purified by high-speed countercurrent chromatography
7α-
羟基吡咯烷酮是一种
生物活性的二萜,其分离自河南杜鹃叶,对肺结核和克氏锥虫具有活性。为了将该化合物用作合成具有增强的
生物活性的化合物的起始原料,我们的目标是将
丙酮酸酮的7-α-羟基脱
水。在
乙酸和
盐酸中在回流下进行的反应得到了意外的
氯化
萘醌,除了6,7-脱氢
吡咯烷酮和其他产物的复杂混合物之外,还芳香化并打开了作为主要产物的起始原料的一个环。反应产物通过高速逆流色谱法用己烷-
乙腈1∶1纯化。测试化合物的抗Leishmanial活性(L.