The depsidone isofulgidin (1) (2,4,7-trichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo-[ b,el [1,4]dioxepin-11-one), has been isolated from the lichen Rinodina dissa together with atranorin and diploicin (3). lsofulgidin (1) has also been detected in the lichens Hafellia parastata and Fulgensia canariensis. The structure of the isomeric lichen depsidone fulgidin has been established as 2,4,9-trichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo[ b,e ][1,4]dioxepin-11-one (4) by unambiguous synthesis.
从地衣 Rinodina dissa 中分离出了去苷酮 isofulgidin (1)(2,4,7-三氯-3-羟基-8-甲氧基-1,6-二甲基-11H-二苯并[b,el [1,4]二氧杂环庚烷-11-酮)以及 atranorin 和 diploicin (3)。异构地衣去苷酮 fulgidin 的结构已通过明确的合成方法确定为 2,4,9-三氯-3-羟基-8-甲氧基-1,6-二甲基-11H-二苯并[b,e][1,4]二氧杂环庚烷-11-酮 (4)。