now have been synthesized from ent-halimic acid. Their structure have been confirmed as well as their absolute configurations established. Bestmann methodology has been used for the synthesis of butenolides and for the γ-hydroxybutenolides synthesis the Boukouvalas method has been employed. Biological testing has been carried out on these compounds.
迄今已知的前三种天然对羟基卤化物是由对卤代酸合成的。已经确认了它们的结构以及确定的绝对构型。Bestmann方法已用于
丁烯内酯的合成,而γ-羟基
丁烯内酯的合成已使用Boukouvalas方法。已经对这些化合物进行了
生物测试。