An Efficient Synthesis of Novel Dibenzo-Fused Nine-Membered Oxacycles Using a Sequential Baylis-Hillman Reaction and Radical Cyclization - Majhi, Tirtha Pada; Neogi, Arpita; Ghosh, Soumen; Mukherjee, Alok Kumar; Helliwell, Madeleine; Chattopadhyay, Partha (Synthesis, 2008)