This invention relates to a compound or group of compounds present in an active principle derived from plants of species Euphorbia peplus, Euphorbia hirta and Euphorbia drummondii, and to pharmaceutical compositions comprising these compounds. Extracts from these plants have been found to show selective...http://www.google.es/patents/US6787161?utm_source=gb-gplus-sharePatente US6787161 - Anti-cancer compounds