K. H. Janbaz, U. Zia, M. H. Mehmood, S. Bashir, M. I. Choudhary, A. H. Gilani
1 Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
2 H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of
3 Natural Product Research Unit, Department of Biological and Biomedical Sciences, Aga
4 Khan University Medical College, Karachi-74800, Pakistan.