L. Z. Liu, Y. X. Gao, C. Che, N. Wu, D. Z. Wang, C. C. Li*, Z. Yang*
Chem. Commun., 2009, 662-664.
A unified strategy towards the facile construction of the [6.7.6.5] oxapentacyclic skeleton of cortistatins is reported, featuring intramolecular Diels–Alder (IMDA) and oxidative dearomatization–cyclization reactions as key steps.