The invention discloses a method for preparing a
Fissistigma oldhamii
lactam alkali compound and application thereof to preparing an anti-tumour
medicine. The method comprises the following steps of: taking
Fissistigma oldhamii
powder, repetitively extracting the
Fissistigma oldhamii
powder by using 80%
ethanol till the colour of extract becomes thin, recovering the
ethanol, and evaporating and
drying the extract; dissolving the extract by using water, ultrasonically fluxing the extract, and extracting and decolouring the extract by using
petroleum ether till the colour of the extract of the
petroleum ether becomes clear; extracting the extract by using
dichloromethane till the colour becomes clear, mixing
dichloromethane extract, and recovering the
dichloromethane to obtain extract; and applying the extract on a silicagel column, eluting the extract by using dichloromethane-
methanol, and collecting eluent in a sectional manner to obtain the compound. A characteristic
plant in Guizhou, namely kopje Fissistigma oldhamii, has obvious inhibitory activity on neovascularisation; a plurality of active compounds are separated from the Fissistigma oldhamii; experiments prove that the compound not only can inhibit formation of neovascularisation but also has an inhibitory action on tumour
cell strains; furthermore, found from animal internal anti-
cancer experiments, the compound has obvious anti-tumour activity on a plurality of
solid tumours and
lung cancers.