Gao K, Jia Z (1998) Phenolic norsesquiterpenes from Ligularia dentata. Phytochemistry 49:167–169
Baba H, Yaoita Y, Kikuchi M (2007) Sesquiterpenoids and lactone derivatives from Ligularia dentata. Helv Chim Acta (in press)
Toyoda K, Yaoita Y, Kikuchi M (2005) Three new benzofuran derivatives from the roots of Ligularia stenocephala Matsum. et Koidz. Chem Pharm Bull 53:1555–1558
Toyoda K, Yaoita Y, Kikuchi M (2005) Chemical constituents of the genus Ligularia plants. II. Triterpenoids from the leaves and roots of Ligularia stenocephala (in Japanese). J Tohoku Pharm Univers 52:27–32
Gaspar EMM, Das Neves HJC (1993) Steroidal constituents from mature wheat straw. Phytochemistry 34:523–527
Acemoglu M, Uebelhart P, Rey M, Eugster CH (1988) Synthese von enantiomerenreinen violaxanthinen und verwandten verbindungen. Helv Chim Acta 71:931–956
Yue Q, Miller CJ, White JFJr, Richardson MD (2000) Isolation and characterization of fungal inhibitors from Epichloë festucae. J Agric Food Chem 48:4687–4692
Toyoda K, Yaoita Y, Kikuchi M (2006) Constituents of the leaves and roots of Ligularia stenocephala Matsum. et Koidz. J Nat Med 60:329–330
Foti MC, Daquino C, Geraci C (2004) Electron-transfer reaction of cinnamic acids and their methyl esters with the DPPH radical in alcoholic solutions. J Org Chem 69:2309–2314
Miyazawa M, Okuno Y, Nakamura S, Kameoka H (1998) Suppression of SOS-inducing activity of chemical mutagens by cinnamic acid derivatives from Scrophulia ningpoensis in the Salmonella typhimurium TA1535/pSK1002 umu test. J Agric Food Chem 46:904–910
Saleem M, Kim H, Jin C, Lee Y (2004) Antioxidant caffeic acid derivatives from leaves of Parthenocissus tricuspidata. Arch Pharm Res 27:300–304
Leu Y, Shi L, Damu AG (2003) Chemical constituents of Taraxacum formosanum. Chem Pharm Bull 51:599–601