[1] Univ N Carolina, Eshelman Sch Pharm, Nat Prod Res Labs, Chapel Hill, NC 27599 USA
[2] Kanazawa Univ, Grad Sch Nat Sci & Technol, Div Pharmaceut Sci, Kanazawa, Ishikawa 9201192, Japan
[3] Kanazawa Univ, Clin R&D Grad Sch Med Sci, Dept Complementary & Alternat Med, Kanazawa, Ishikawa 9208640, Japan
[4] Kinki Univ, Fac Agr, Nara 6318505, Japan
[5] China Med Univ & Hosp, Chinese Med Res & Dev Ctr, Taichung 401, Taiwan