Propolis produced by the stingless bee Lisotrigona cacciae was studied for the first time. Using different chromatographic procedures, a total of eighteen constituents (phenols and triterpenes) were isolated, among which flavane 1 , homoisoflavanes 2 – 4 , and xanthones 5 and 6 were new for propolis. Propolis extract was also characterized by gas chromatography/mass spectrometry and other fifteen constituents were identified. The xanthone α -mangostin ( 8 ) demonstrated significant activity against Staphylococcus aureus with MIC and MBC 0.31 μg/ml, followed by 7,4'-dihydroxy-5-methoxy-8-methylflavane ( 1 ) with MIC 78 μg/ml and MBC 156 μg/ml. 10,11- Dihydroxydracaenone C ( 4 ), a component bearing ortho -hydroxyl groups, was the only compound displaying radical scavenging ability. Triple botanical origin of the sample was defined, consisting of Dracaena cochinchinensis , Cratoxylum cochinchinense and Mangifera indica . D . cochinchinensis is a new resin source of propolis.

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