1. Department
of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima
4-chome, Aoba-ku, Sendai 981-8558, Japan
2. Natural
Product Chemistry Laboratory, Institute of Chemistry and Chemical
Technology, Mongolian Academy of Sciences, 13330 Peace Avenue, The 4th Building
of MAS, Ulaanbaatar, Mongolia
3. School
of Engineering and Applied Sciences, National University of Mongolia, POB-617, Ulaanbaatar-46A, Mongolia
4. Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, Hokkaido 080-8555, Japan