Kamal, Ahmed; Faazil, Shaikh; Ramaiah, M. Janaki; Ashraf, Md.; Balakrishna; Pushpavalli; Patel, Nibedita; Pal-Bhadra, Manika Bioorganic and Medicinal Chemistry Letters, 2013 , vol. 23, # 20 p. 5733 - 5739