Dehydroisoleucomisin (anhydroaustricin) was converted in good yield to guai-1(10),3,5,7(11), 8-pentaen-2-on-12,8-olide by the action of anhydrous HCl in dry DMF. The chemical structure of the product was established using spectral data. The probable formation scheme of this lactone was proposed to include a series of prototopic transformations and ionic dehydrogenation of intermediates.
在干燥的
DMF中,脱氢
异亮氨酸(无
水奥斯特菌素)在无
水盐酸的作用下转化为guai-1(10),3,5,7(11), 8-pentaen-2-on-12,8-olide,收率较高。利用光谱数据确定了产物的
化学结构。该内酯可能的形成方案包括一系列原位转化和中间体的离子脱氢。