1. Department of Pharmaceutical Chemistry and Pharmacognosy, Unaizah College of Pharmacy, Qassim University, Unaizah 51911, Saudi Arabia
2. Unit of Scientific Research, Applied College, Qassim University, Unaizah 51911, Saudi Arabia
3. Department of Pharmacology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia
4. Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Muscat 123, Oman