Nakhi, Ali; Rahman, Md. Shafiqur; Kishore, Ravada; Meda, Chandana Lakshmi T.; Deora, Girdhar Singh; Parsa, Kishore V.L.; Pal, Manojit Bioorganic and Medicinal Chemistry Letters, 2012 , vol. 22, # 20 p. 6433 - 6441