Alkaloids from Roots of Stephania rotunda and Their Cholinesterase Inhibitory Activity - Hung, Tran Manh; Dang, Nguyen Hai; Kim, Jin Cheol; Jang, Han-Su; Ryoo, Sung-Woo; Lee, Jeong Hyung; Choi, Jae Sue; Bae, KiHwan; Min, Byung Sun (Planta Medica, 2010)