Cho, Sung Yun; Lee, Byung Ho; Jung, Heejung; Yun, Chang Soo; Ha, Jae Du; Kim, Hyoung Rae; Chae, Chong Hak; Lee, Jeong Hyun; Seo, Ho Won; Oh, Kwang-Seok Bioorganic and Medicinal Chemistry Letters, 2013 , vol. 23, # 24 p. 6711 - 6716