title: Chemical and biological investigation of the fungus Pulveroboletus ravenelii.
abstract: Two new compounds, pulveraven A (1) and pulveraven B (2), as well as vulpinic acid (3) and its previously unreported polymorph were isolated from the fruiting body of Pulveroboletus ravenelii. The structures were determined using a combination of NMR, MS, IR, optical rotation, molecular modeling, and X-ray analysis. The isolates were evaluated for antimicrobial activity as well as their potential to inhibit cyclooxygenase (COX) activity and carcinogen-induced preneoplastic lesion formation with mouse mammary organ culture (MMOC).
authors.affiliation: Department of Pharmacognosy, Thad Cochran National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, USA.
authors.forename: Christine J G
authors.initials: CJ
authors.lastname: Duncan
authors.forename: Muriel
authors.initials: M
authors.lastname: Cuendet
authors.forename: Frank R
authors.initials: FR
authors.lastname: Fronczek
authors.forename: John M
authors.initials: JM
authors.lastname: Pezzuto
authors.forename: Rajendra G
authors.initials: RG
authors.lastname: Mehta
authors.forename: Mark T
authors.initials: MT
authors.lastname: Hamann
authors.forename: Samir A
authors.initials: SA
authors.lastname: Ross
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D000818:Animals; D016588:Anticarcinogenic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D018360:Crystallography, X-Ray; D016861:Cyclooxygenase Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005260:Female; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D008325:Mammary Neoplasms, Experimental; D051379:Mice; D008807:Mice, Inbred BALB C; D008922:Mississippi; D008958:Models, Molecular; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009924:Organ Culture Techniques; D010648:Phenylacetates / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D016588:Anticarcinogenic Agents; D016861:Cyclooxygenase Inhibitors; D005663:Furans; D010648:Phenylacetates; C474551:pulveraven A; C474552:pulveraven B; C077134:vulpinic acid