The performance of various transition-metal catalysts was explored in the step-economical synthesis of naturally occurring lamellarin alkaloids by C–H/N–H activation. The oxidative alkyne annulation proceeded efficiently by using sustainable ruthenium(II) catalysis, which set the stage for a concise synthesis of lamellarin D, lamellarin H and derivatives thereof.

中文翻译：

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通过 C-H/N-H 活化简明合成层状菌素生物碱：氧化炔环化中金属催化剂的评价

通过 C-H/N-H 活化一步经济地合成天然层状菌素生物碱，探索了各种过渡金属催化剂的性能。通过使用可持续的钌 (II) 催化，氧化炔环化有效进行，为层状蛋白 D、层状蛋白 H 及其衍生物的简洁合成奠定了基础。