Gonzaga, Daniel; Senger, Mario Roberto; Da Silva, Fernando De Carvalho; Ferreira, Vitor Francisco; Silva Jr., Floriano Paes
European Journal of Medicinal Chemistry, 2014 , vol. 74, p. 461 - 476

Hardegger; Schreier
Helvetica Chimica Acta, 1952 , vol. 35, p. 232,242

El Khadem; El-Shafei
Journal of the Chemical Society, 1958 , p. 3117

Sweeny, James G.; Ricks, Edith; Estrada-Valdes, Maria C.; Iacobucci, Guillermo A.; Long, Robert C.
Journal of Organic Chemistry, 1985 , vol. 50, # 7 p. 1133 - 1134