Ha, Young Mi; Park, Ji Young; Park, Yun Jung; Park, Daeui; Choi, Yeon Ja; Kim, Ji Min; Lee, Eun Kyeong; Han, Yu Kyeong; Kim, Jin-Ah; Lee, Ji Yeon; Moon, Hyung Ryong; Chung, Hae Young Bioorganic and Medicinal Chemistry Letters, 2011 , vol. 21, # 8 p. 2445 - 2449