1. Department of Pharmacognosy, Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
2. Laboratory
of Pharmacognosy and Natural Products Chemistry, Kagawa School of
Pharmaceutical Sciences, Tokushima Bunri University, Sanuki, Kagawa 769-2193, Japan