1. Division of Marine Bioscience , Korea Maritime and Ocean University , Busan 49112 , Republic of Korea
2. Department of Chemistry , University of Malakand , Chakdara , Dir Lower, KP , Pakistan
3. Department of Food and Nutrition, College of Medical and Life Sciences , Silla University , Busan 46958 , Republic of Korea
4. Marine Natural Product Chemistry Laboratory, Korea Institute of Ocean Science and Technology , Ansan 15627 , Republic of Korea
5. Department of Biochemistry and Molecular Biology, Center for Tropical and Emerging Global Diseases (CTEGD) , University of Georgia , Athens , GA 30602 , USA
6. Department of Chemistry, Virginia Tech Center for Drug Discovery , M/C 0212, Virginia Tech , Blacksburg , VA 24061 , USA