[1] King Saud Univ, Coll Pharm, Dept Pharmaceut Chem, Riyadh 11451, Saudi Arabia
[2] King Saud Univ, Coll Pharm, Dept Pharmacognosy, Riyadh, Saudi Arabia
[3] Al Azhar Univ, Dept Organ Chem, Fac Pharm, Cairo, Egypt
[4] King Saud Univ, Coll Pharm, Dept Pharmacol & Toxicol, Riyadh, Saudi Arabia
[5] King Saud Univ, Dept Bot & Microbiol, Fac Sci, Riyadh, Saudi Arabia
[6] King Saud Univ, Dept Chem, Fac Sci, Riyadh, Saudi Arabia