[1] Dr Reddys Labs, Proc Res & Dev, Bollaram 502325, Medak, India
[2] Andhra Univ, Dept Organ Chem & FDW, Visakhapatnam 530003, Andhra Pradesh, India
[3] Andhra Univ, Dept Microbiol, Visakhapatnam 530003, Andhra Pradesh, India
[4] Orbit Chem Pharmaceut Private, Hyderabad 500051, India