Jung, Hee Kyung; Doddareddy, Munikumar Reddy; Cha, Joo Hwan; Rhim, Hyewhon; Cho, Yong Seo; Koh, Hun Yeong; Jung, Bong Young; Pae, Ae Nim Bioorganic and Medicinal Chemistry, 2004 , vol. 12, # 15 p. 3965 - 3970