Naga Sudha; Sridhar; Girija Sastry; Reddy; Sreevidya, Owk; Lavanya; Asha Jyothi; Nagesh; Sen, Saikat; Chakraborty, Raja Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2013 , vol. 52, # 3 p. 422 - 427