1. Faculty
of Pharmacy, Qatar University, Doha 2713, Qatar
2. Institut
für Geobotanik und Botanischer Garten, Martin-Luther-Universität, Am Kirchtor 1, 06108 Halle, Germany
3. Department
of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
4. Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
5. Department
of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States