title: Design, synthesis and biological evaluation of novel spin-labeled derivatives of podophyllotoxin.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry Lanzhou University, Lanzhou 730000, China.
authors.forename: Jia-Qiang
authors.initials: JQ
authors.lastname: Zhang
authors.forename: Zhi-Wei
authors.initials: ZW
authors.lastname: Zhang
authors.forename: Ling
authors.initials: L
authors.lastname: Hui
authors.forename: Xuan
authors.initials: X
authors.lastname: Tian