Hao Zhang, Shiqiang Ma, Zhimin Xing, Lin Liu, Bowen Fang, Xingang Xie and Xuegong She
Org. Chem. Front., 2017,4, 2211-2215
DOI:
10.1039/C7QO00550D,
Research Article
A tandem radical cyclization reaction towards the 6/6/5 fused tricyclic skeleton, which exists in numerous natural products, was developed in modest to good yields. In this transformation, two C–C bonds and two rings were formed successively via a tandem 5-exo-trig/6-endo-trig cyclization reaction. 5-epi-7-deoxy-Isoabietenin A was also synthesized efficiently via this strategy.