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Zablocki, Jeff; Kalla, Rao; Perry, Thao; Palle, Venkata; Varkhedkar, Vaibhav; Xiao, Dengming; Piscopio, Anthony; Maa, Tenning; Gimbel, Art; Hao, Jia; Chu, Nancy; Leung, Kwan; Zeng, Dewan Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 3 p. 609 - 612