Practical and Green Synthesis of Combretastatin A-4 and Its Prodrug CA4P Using Renewable Biomass-Based Starting Materials - Chen, Yu; Zou, Yong; Sun, Hong-Yi; Liu, Xian-Ke; Xiao, Chun-Fen; Sun, Jie; He, Shu-Jie; Li, Jun (Synthesis, 2011)