1. Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns), Universiti Teknologi MARA Selangor Branch, Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor, Malaysia
2. Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
3. Department of Chemistry, College of Sciences and Humanites, Prince Sattam bin Abdulaziz University, P.O. Box 83, 11942, Al Kharj, Saudi Arabia
4. Department of Chemistry, Faculty of Science, University Malaya, 50603 Kuala Lumpur, Malaysia
5. Natural Product Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, United Kingdom
6. Jodrell Laboratory, Natural Capital and Plant Health Department, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, United Kingdom
7. Natural Products Inc., Evanston, Illinois 60203, United States
8. College of Pharmacy, University of Florida, Gainesville, Florida 32610, United States