[1] China Pharmaceut Univ, Dept Nat Med Chem, Nanjing 210009, Peoples R China
[2] Univ Illinois, Coll Pharm, Dept Med Chem & Pharmacognosy, Chicago, IL 60612 USA
[3] Univ Illinois, Coll Pharm, WHO Collaborating Ctr Tradit Med, Chicago, IL 60612 USA
[4] Jinan Univ, Coll Pharm, Guangzhou 510632, Guangdong, Peoples R China