Casimiro-Garcia, Agustin; De Clercq, Erik; Pannecouque, Christophe; Witvrouw, Myriam; Loftus, Tracy L; Turpin, Jim A; Buckheit Jr., Robert W; Fanwick, Phillip E; Cushman, Mark Bioorganic and Medicinal Chemistry, 2001 , vol. 9, # 11 p. 2827 - 2841