Globulixanthones A and B, two new cytotoxic xanthones with isoprenoid groups from the root bark of Symphonia globulifera.

  title={Globulixanthones A and B, two new cytotoxic xanthones with isoprenoid groups from the root bark of Symphonia globulifera.},
  author={Augustin Ephrem Nkengfack and Pierre Mkounga and Zacharias Tanee Fomum and Mich{\`e}le Meyer and Bernard Bodo},
  journal={Journal of natural products},
  volume={65 5},
Bioassay-guided fractionation of a root bark extract of Symphonia globulifera has yielded, in addition to stigmasterol, two new xanthones with isoprenoid units, named globulixanthones A (1) and B (2). The structures of these compounds have been elucidated by spectroscopic means. They possess significant cytotoxicity in vitro against the KB cell line. 

Globulixanthone F, a New Polyoxygenated Xanthone with an Isoprenoid Group and Two Antimicrobial Biflavonoids from the Stem Bark of Symphonia Globulifera¶

The spectral data of ugaxanthone and mbarraxanthone are reported here for the first time, as well as the antimicrobial activity of globulixanthone F against a range of microorganisms.

Banfoxanthone, a new prenylated xanthone from the stem bark of Garcinia ovalifolia (Guttiferaceae)

One new prenylated xanthone named banfoxanthone is isolated from Garcinia ovalifolia and others species of genus Garcinia appear to be useful as chemotaxonomic markers in Garcinia.

A prenylated xanthone with antimicrobial activity from the seeds of Symphonia Globulifera

A prenylated xanthone has been isolated from the seeds of Symphonia globulifera together with the known compounds sitosterol and oleanolic acid. The structure of the new compound was elucidated by

Paeciloxanthone, a new cytotoxic xanthone from the marine mangrove fungus Paecilomyces sp. (Tree1-7)

The metatrophic fungus Paecilomyces sp. (Tree1-7) was isolated from an estuarine mangrove from the Taiwan Strait. The methanol extract of the fungal mycelium exhibited cytotoxicity against hepG2.

Polyanxanthone, a Xanthone from the Stem Bark of Garcinia Polyantha

A new xanthone polyanxanthone, together with five known xanthones, a pentacyclic triterpene and a benzophenone were isolated from the stem bark of Garcinia polyantha.

Symphonia globulifera, a widespread source of complex metabolites with potent biological activities.

The natural occurrence, botanical aspects, ethnomedicinal use, structure, and biogenesis, as well as biological activities of compounds isolated from this species according to their provenance are described.

New Cytotoxic Metabolites from the Marine‐Derived Fungus Penicillium sp. ZLN29

One new penicillide derivative, prenpenicillide (1), and one new xanthone derivative, prenxanthone (2), were isolated from the culture extract of the marine-derived fungus Penicillium sp. ZLN29,