Abstract
The methanol extract of the leaves of Tripetaleia paniculata was examined and a substance was detected which has chemical characters like grayanotoxin-I, -II, and III-, and lyoniol-A, but did not agree with any of them. Compounds other than the toxic principle isolated and identified were normal higher aliphatic hydrocarbons, higher primary alcohols, higher ketones, ursolic acid, and monotropein. Maslinic acid and 2α-hydroxyursolic acid were obtained as a mixture which was converted into diacetate methyl ester, analyzed by gas-liquid chromatography, and the amount of each component was found to be roughly equal.
