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Updated: Jan 31, 2026

Establishing Fungal Entomopathogens as Endophytes: Towards Endophytic Biological Control
Published on: April 11, 2013
Perylenequinones from an endophytic Alternaria sp. of Pinus ponderosa
Mudasir A Tantry1,2, Ahmed S Idris3,4, John S Williamson3
1Department of Chemistry, S. P. College, Cluster University Srinagar, Kashmir 190001, India.
Abstract:
The differential solvent extraction and further purification of fractions of endophytic Alternaria sp. isolated from Pinus ponderosa led to the isolation of further two perylenequinone compounds as 3,6,6a,9,10-pentahydroxy-7,8-epoxy-4-oxo-4,5,6,6a,6b,7,8,9-octahydroperylene (1) and 3,6,6a,7,10-pentahydroxy-4,9-dioxo-4,5,6,6a,6b,7,8,9-octahydroperylene (2). Structure of compounds 1-2 was determined on the basis of detailed spectroscopic analysis, as well as by comparison with literature reports. The antimicrobial, antileismanial, antimalarial and cytotoxic activities of compound 1 and 2 were evaluated.
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