[1] Univ Alexandria, Fac Pharm, Dept Pharmacognosy, Alexandria 21521, Egypt
[2] Univ Mississippi, Natl Ctr Nat Prod Res, University, MS 38677 USA
[3] Univ Mississippi, Sch Pharm, Dept Pharmaceut, University, MS 38677 USA
[4] Univ Minnesota, Coll Pharm, Dept Med Chem, Minneapolis, MN 55455 USA