[1] King Saud Univ, Dept Pharmaceut Chem, Coll Pharm, Riyadh 11451, Saudi Arabia
[2] King Faisal Specialized Hosp & Res Ctr, Stem Cell & Tissue Re Engn Program, Res Ctr, Riyadh 11211, Saudi Arabia
[3] King Saud Univ, Dept Pharmacol & Toxicol, Coll Pharm, Riyadh 11451, Saudi Arabia
[4] Univ Sains Malaysia, Sch Phys, X Ray Crystallog Unit, Usm Penang 11800, Malaysia