Son, Jong-Keun; Zhao, Long-Xuan; Basnet, Arjun; Thapa, Pritam; Karki, Radha; Na, Younghwa; Jahng, Yurngdong; Jeong, Tae Cheon; Jeong, Byeong-Seon; Lee, Chong-Soon; Lee, Eung-Seok European Journal of Medicinal Chemistry, 2008 , vol. 43, # 4 p. 675 - 682