Gnetucleistols are a group of chemical compounds of the stilbenoid class isolated from plants in the genus Gnetum. They are desigated gnetucleistol A through F. All the gnetucleistols have been isolated from Gnetum cleistostachyum, a plant used in traditional Chinese medicine. Gnetucleistol C has also been found in Gnetum microcarpum and Gnetum cuspidatum.
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