Abstract Retigeric acids A and B were isolated from the lichens of the Lobaria retigera group and their structures were established to be Ia and VIa, respectively. The occurrence of these triterpenes in the lichens of the Lobaria retigera group, and in L. kazawaensis and L. sachalinensis is of chemotaxonomic interest.

中文翻译：

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Lobaria retigera group 地衣中的 retigeric 酸 A 和 B 的结构

摘要 从Lobaria retigera group的地衣中分离得到Retigeric Acid A和B，并确定其结构分别为Ia和VIa。这些三萜在 Lobaria retigera 群的地衣以及 L. kazawaensis 和 L. sachalinensis 中的存在具有化学分类学意义。