32. Hitoshi Tanaka, Masaru Sato, Tomoko Oh-Uchi, Ryozo Yamaguchi, Hideo Etoh, Hiroshi Shimizu, Magoichi Sako, and Hiroshi Takeuchi : Antibacterial Properties of a New Isoflavonoid from Erythrina poeppigiana against Methicillin-resistant Staphylococcus aureus.
Phytomedicine, 11, 331-337 (2004).
33. Hitoshi Tanaka, Miyuki Hirata, Hideo Etoh, Magoichi Sako, Masaru Sato, Jin Murata, Hiroko Murata, Dedy Darnaedi, and Toshio Fukai : Six New Constituents from the Roots of Erythrina variegata.
Chem. Biodiv., 1 (7), 1101-1108 (2004).
34. Masaru Sato, Hitoshi Tanaka, Ryozo Yamaguchi, Kuniki Kato, and Hideo Etoh : Synergistic Effects of Mupirocin and an Isoflavanone Isolated from Erythrina variegate on Growth and Recovery of Methicillin-resistant Staphylococcus aureus.
Int. J. Antimicrob. Agents., 24, 241-246 (2004).
35. Masaru Sato, Hitoshi Tanaka, Tomoko Oh-Uchi, Toshio Fukai, Hideo Etoh, and Ryozo Yamaguchi : Antibacterial Activity of Phytochemicals Isolated from Erythrina zeyheri against Vancomycin-resistant Enterococci and Their Combinations with Vancomycin.
Phytother. Res., 18 (11), 906-910 (2004).
36. Hideo Etoh, Kazushi Murakami, Tokiyasu Yogoh, Hajime Ishikawa, Yoshiyasu Fukuyama, and Hitoshi Tanaka : Anti-oxidative Compounds in Barley Tea.
Biosci. Biotechnol. Biochem., 68 (12), 2616-2618 (2004).
37. Hitoshi Tanaka, Hideo Etoh, Aditya Kulkarni, and Toshio Fukai ： Phenolic Constituents and Alkaloids from Erythrina species.
Recent Res. Devel. Phytochem., 8, 83-116 (2004).
38. Masaru Sato, Hitoshi Tanaka, Ryozo Yamaguchi, and Hideo Etoh ： Antibacterial Properties of Plant-derived Phenolic Constituents against Methicillin-resistant Stphylococcus aureus.
Recent Res. Devel. Phytochem., 8, 157-176 (2004).
39. Hitoshi Tanaka, Masaru Sudo, Miyuki Hirata, Magoichi Sako, Masaru Sato, Ih-Sheng Chen, and Toshio Fukai： Two New Isoflavonoids and a New 2-Arylbenzofuran from the Roots of Erythrina variegata
Heterocycles, 65 (4), 871-877 (2005).