[1] Chongqing Univ, Sch Pharmaceut Sci, Chongqing Key Lab Nat Prod Synth & Drug Res, Chongqing 401331, Peoples R China
[2] North Sichuan Med Coll, Sch Preclin Med, Sichuan Key Lab Med Imaging, Nanchong 637000, Sichuan, Peoples R China
[3] North Sichuan Med Coll, Dept Chem, Nanchong 637000, Sichuan, Peoples R China