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A new oligostilbene, caragasinin C (1), and seven known compounds, betulinic acid (2), 4-hydroxybenzaldehyde (3), (‒)-medicarpin (4), wistin (5), (2E,4S)-4-hydroxy-2-nonenoic acid (6), pallidol (7), and (+)-α-viniferin (8), were isolated from the roots ofCaragana sinica. The structure of caragasinin C was established on the basis of spectroscopic techniques, including HRESIMS, 1D and 2D-NMR. [ABSTRACT FROM PUBLISHER]

In 2011, we isolated a natural recombinant H9N2 avian influenza virus from fecal droppings of bean goose ( Anser fabalis ) in Korea. Phylogenetic analyses showed that the A/bean goose/Korea/220/2011(H9N2) isolate is a reassortant of Eurasian and North American lineages of avian influenza virus. In addition, the complete genome sequence, including all 8 gene segments, was associated with Chinese H9N2 viruses isolated from wild birds in the Hunan East Dongting Lake National Nature Reserve. These data provide direct evidence for the exchange of avian influenza viruses between Korea and China via wild birds. [ABSTRACT FROM AUTHOR]