Kumar, Sunil; Sapra, Sameer; Kumar, Raj; Gupta, Manish Kumar; Koul, Surrinder; Kour, Tandeep; Saxena, Ajit Kumar; Suri, Om Prakash; Dhar, Kanahya Lal Medicinal Chemistry Research, 2012 , vol. 21, # 11 p. 3720 - 3729