ive known biflavones,sciadopitysin(Ⅰ), ginkgetin(Ⅲ),isoginkgetin(Ⅴ),I-5'-methoxy bilobetin(Ⅶ)and bilobetin(Ⅷ)were isolated from the fleshy testa of Ginkgo biloba L. collected in the campus of Beijing Medical U n iversity. The structure determination was based upon the physical & chemical data and spectroscopic analysis (UV,IR,MS,NMR ).They are the same as the contents of the leaves of Ginkgo biloba L.,but the biflavones are first isolated from the testa part of this st1ecies.
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