Ciba-Geigy Corporation
Patent: US4739052 A1, 1988 ;

Maier, Guenther; Roth, Cornelia; Schmitt, Reinhart K.
Chemische Berichte, 1985 , vol. 118, # 2 p. 704 - 721

Fox, Brian M.; Sugimoto, Kazuyuki; Iio, Kiyosei; Yoshida, Atsuhito; Zhang, Jian; Li, Kexue; Hao, Xiaolin; Labelle, Marc; Smith, Marie-Louise; Rubenstein, Steven M.; Ye, Guosen; McMinn, Dustin; Jackson, Simon; Choi, Rebekah; Shan, Bei; Ma, Ji; Miao, Shichang; Matsui, Takuya; Ogawa, Nobuya; Suzuki, Masahiro; Kobayashi, Akio; Ozeki, Hidekazu; Okuma, Chihiro; Ishii, Yukihito; Tomimoto, Daisuke; Furakawa, Noboru; Tanaka, Masahiro; Matsushita, Mutsuyoshi; Takahashi, Mitsuru; Inaba, Takashi; Sagawa, Shoichi; Kayser, Frank
Journal of Medicinal Chemistry, 2014 , vol. 57, # 8 p. 3464 - 3483

Izawa, Yasuji; Watoh, Yasushi; Tomioka, Hideo
Chemistry Letters, 1984 , p. 33 - 36

Blaschim S.p.a.
Patent: US4675418 A1, 1987 ;