[1] School of Pharmacy, College of Pharmacy and Nursing, University of Nizwa, Postal Code 616, P. O. Box 33, Nizwa
[2] Phytochemistry Research Laboratory, Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi
[3] Strategic Center for Diabetes Research, College of Medicine, King Saud University, Riyadh