Tuesday, August 03, 2010

News Compounds Isolated from Kenyan Propolis Show Antibacterial, Antiradical Activity

New Biologically Active Compounds from Kenyan Propolis
Fitoterapia, Volume 81, Issue 6, September 2010, Pages 509-514

From propolis samples from Kenya, two new arylnaphtalene lignans were isolated, tetrahydrojusticidin B 1 and 6-methoxydiphyllin 2, along with four known phenolic compounds 5–8, found for the first time in propolis. The structures of the compounds were elucidated based on their spectral properties.

The geranylstilbenes 7 and 8 demonstrated antibacterial activity against S. aureus, and the geranylflavon macarangin 6 possessed antiradical activity against DPPH radicals.

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