Diptoindonesin A, a new C-glucoside of ε-viniferin from Shorea seminis (Dipterocarpaceae). Nanik S. Aminah, Sjamsul A. Achmad, Norio Aimi, Emilio L. Ghisalberti, Euis H. Hakim, Mariko Kitajima, Yana M. Syah and Hiromitsu Takayama, Fitoterapia, Volume 73, Issue 6, October 2002; doi:10.1016/S0367-326X(02)00179-X