Polytolypin [1], a new pentacyclic triterpenoid exhibiting antifungal and antibiotic activity, has been isolated from cultures of Polytolypa hystricis (JS189), a fungal colonist of porcupine dung. Two known compounds [2 and 3] were also isolated. Polytolypin was obtained by chromatographic fractionation of the EtOAc extract of P. hystricis liquid cultures, and the structure was assigned on the basis of 2D nmr and hrms data.
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Sci Rep
March 2018
Broad Institute of MIT and Harvard, Cambridge, MA, United States.
Dimorphic fungal pathogens cause a significant human disease burden and unlike most fungal pathogens affect immunocompetent hosts. To examine the origin of virulence of these fungal pathogens, we compared genomes of classic systemic, opportunistic, and non-pathogenic species, including Emmonsia and two basal branching, non-pathogenic species in the Ajellomycetaceae, Helicocarpus griseus and Polytolypa hystricis. We found that gene families related to plant degradation, secondary metabolites synthesis, and amino acid and lipid metabolism are retained in H.
View Article and Find Full Text PDFJ Nat Prod
December 1995
Department of Chemistry, University of Iowa, Iowa City 52242, USA.
Polytolypin [1], a new pentacyclic triterpenoid exhibiting antifungal and antibiotic activity, has been isolated from cultures of Polytolypa hystricis (JS189), a fungal colonist of porcupine dung. Two known compounds [2 and 3] were also isolated. Polytolypin was obtained by chromatographic fractionation of the EtOAc extract of P.
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