A ¹³C-labelling was introduced into each individual carbon of the recently discovered sestermobaraenes by the enzymatic conversion of the correspondingly ¹³C-labelled isoprenyl diphosphate precursors with the sestermobaraene synthase from Streptomyces mobaraensis. The main compounds sestermobaraenes A, B, and C were analysed by gas chromatography–mass spectrometry (GC–MS), allowing for a deep mechanistic investigation of the electron impact mass spectrometry (EIMS) fragmentation reactions of these sesterterpene hydrocarbons.

中文翻译：

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关于倍半细菌性双萜类细菌A–C的质谱碎裂

甲¹³ C-标记被引入到由相应的酶转化的最近发现sestermobaraenes的每个单独的碳¹³与来自sestermobaraene合酶C标记的异戊二烯基二磷酸前体茂原链霉菌。通过气相色谱-质谱法（GC-MS）分析了主要化合物中的间苯二酚A，B和C，从而可以深入研究这些酯基戊二烯碳氢化合物的电子碰撞质谱（EIMS）裂解反应。