Two New Protopines Argemexicaines A and B and the Anti-HIV Alkaloid 6-Acetonyldihydrochelerythrine from Formosan Argemone mexicana - Chang, Yuh-Chwen; Hsieh, Pei-Wen; Chang, Fang-Rong; Wu, Ru-Rong; Liaw, Chih-Chuang; Lee, Kuo-Hsiung; Wu, Yang-Chang (Planta Medica, 2003)