1. Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
2. Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
3. Department of Biochemistry, Bahauddin Zakariya University, 60800, Multan, Pakistan
4. Department of Chemistry, Quaid-i-Azam University, 45320, Islamabad, Pakistan
5. Department of Botany and Microbiology, College of Science, King Saud University, P. O. 2455, Riyadh, 11451, Saudi Arabia
6. Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, USA
7. Department of Pharmaceutical & Medicinal Chemistry, An der Immenburg 4, D-53121 Bonn, Germany