Chunlin Zhu, Jingfu Zhang, Zhiyuan Shang, Xinchen Yang, J Chen, Zhen Liu, Chao Li
methyl ester and xiamycin E, where the geminal heterocoupling forges the fused tricyclic core and provides advanced intermediates for subsequent target-oriented elaboration. Mechanistic studies support an autotandem pathway involving initial cross-coupling followed by oxidative cyclometalation. Collectively, these studies establish a useful method for the modular construction of fused 6/5/6 polycycles.