1. Department of Pharmacognosy, Faculty of Pharmacy Mansoura University Mansoura 35516 Egypt
2. Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences Kyushu University Fukuoka 812-8582 Japan
3. Division of Marine Environment National Institute of Oceanography and Fisheries Hurghada 84511 Egypt
4. Department of Agro-environmental Sciences, Graduate School of Bioresource and Bioenvironmental Science Kyushu University, 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan