[1] Univ Tokushima, Fac Pharmaceut Sci, Tokushima 7708505, Japan
[2] Inst Bot & Bot Garden, Tashkent 700143, Uzbekistan
[3] Walter Reed Army Inst Res, Div Expt Therapeut, Silver Spring, MD 20910 USA
[4] Univ N Carolina, Nat Prod Lab, Div Med Chem & Nat Prod, Sch Pharm, Chapel Hill, NC 27599 USA