Rodriguez Rivero, Marta; Alonso, Ines; Carretero, Juan C.
Chemistry - A European Journal, 2004 , vol. 10, # 21 p. 5443 - 5459

Nagasaki, Izuru; Matsumoto, Miyuki; Yamashita, Masanori; Miyashita, Akira
Heterocycles, 1999 , vol. 51, # 5 p. 1015 - 1024