Benzophenones from Hypericum

Tanaka N, Takaishi Y, Shikishima Y, Nakanishi Y, Bastow K, Lee KH, Honda G, Ito M, Takeda Y, Kodzhimatov OK, Ashurmetov O (2004) Prenylated benzophenones and xanthones from Hypericum scabrum. J Nat Prod 67(11) 1870-1875... 

More recently, from the same species of Hypericum, other two glycosilated benzophenones, annulatophenonoside and acetylannulatophenonoside, have been characterized both compounds are conjugated with a unit of arabinose [84]. 

Historically, reviews of benzophenones were included as small sections with the biogenetically related xanthones. Previous reviews include Bennett and Lee [1] who discussed the distribution and isolation of 20 benzophenones included in a review focused on xanthones. They also discussed the biosynthetic relationships between xanthones and benzophenones. Kumar and Baslas [2] summarized the chemical composition, medical importance, and biologically active benzophenones, biflavonoids, and xanthones isolated from Garcinia species. Two reviews by Waterman focused on the chemotaxonomic significance of benzophenones, along with biflavonoids and xanthones, of ten African Garcinia species [3,4], Locksley and Murray [5] discussed the distribution of thirteen benzophenones in higher plants and Sultanbawa [6] included five benzophenones in a review on xanthonoids from tropical plants. Sultanbawa also discussed the biosynthesis of benzophenones and xanthones. Erdelmeier et al. [7] discussed 20 polyprenylated benzophenones in a chapter on the various properties of St. John s Wort Hypericum perforatum). 

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