Retrodihydrochalcones and Homoisoflavones Isolated from Thai Medicinal Plant Dracaena loureiri and their Estrogen Agonist Activity - Ichikawa, Kazuo; Kitaoka, Masahiro; Taki, Motohiko; Takaishi, Sachiko; lijima, Yasuteru; Boriboon, Malee; Akiyama, Toshiyuki (Planta Medica, 1997)