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Isolation of C-29 oxygenated oleanane triterpenoids and a (+)-muurolene type sesquiterpenoid from the fruiting bodies of Fuscoporia torulosa and their bioactivities

Basidiomycetes with a wide variety of skeletons of secondary metabolites can be expected to be the source of new interesting biological compounds. During our research on basidiomycetes, two new C-29 oxygenated oleanane-type triterpenes ( 1 and 2 ) and torulosacid ( 3 ), a muurolene type sesquiterpen...

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Published in:Journal of natural medicines 2024-09, Vol.78 (4), p.919-928
Main Authors: Yoneyama, Tatsuro, Chen, Chian, Ichimura, Yoshihiro, Nakashima, Katsuyuki, Kenmoku, Hiromichi, Imagawa, Hiroshi, Umeyama, Akemi, Noji, Masaaki
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container_title Journal of natural medicines
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creator Yoneyama, Tatsuro
Chen, Chian
Ichimura, Yoshihiro
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Kenmoku, Hiromichi
Imagawa, Hiroshi
Umeyama, Akemi
Noji, Masaaki
description Basidiomycetes with a wide variety of skeletons of secondary metabolites can be expected to be the source of new interesting biological compounds. During our research on basidiomycetes, two new C-29 oxygenated oleanane-type triterpenes ( 1 and 2 ) and torulosacid ( 3 ), a muurolene type sesquiterpenoid with a five-membered ether ring along with nine known compounds ( 4 – 12 ), were isolated from the MeOH extract of the fruiting bodies of Fuscoporia torulosa . The structures of 1 – 3 were determined by NMR and HREIMS analysis. Further studies on the stereochemistry of 3 were conducted using X-ray crystallographic analysis and comparison of experimental and calculated ECD spectra. In the antimicrobial assay of isolates, 1 , 7 , and 9 showed growth inhibitory activity against methicillin-resistant Staphylococcus aureus and other gram-positive strains. Isolation of oleanane type triterpenes from fungi including basidiomycetes, is a unique report that could lead to further isolation of new compounds and the discovery of unique biosynthetic enzymes. Graphical abstract
doi_str_mv 10.1007/s11418-024-01832-z
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subjects Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - isolation & purification
Anti-Bacterial Agents - pharmacology
Antifungal agents
Basidiomycota - chemistry
Biomedical and Life Sciences
Biomedicine
Complementary & Alternative Medicine
Crystallography, X-Ray
Drug resistance
Fruit bodies
Fruiting Bodies, Fungal - chemistry
Fuscoporia torulosa
Medicinal Chemistry
Methicillin
Methicillin-Resistant Staphylococcus aureus - drug effects
Microbial Sensitivity Tests
Molecular Structure
Oleanolic Acid - analogs & derivatives
Oleanolic Acid - chemistry
Oleanolic Acid - isolation & purification
Oleanolic Acid - pharmacology
Original Paper
Pharmacology/Toxicology
Pharmacy
Plant Sciences
Secondary metabolites
Sesquiterpenes - chemistry
Sesquiterpenes - isolation & purification
Sesquiterpenes - pharmacology
Stereochemistry
Triterpenes
Triterpenes - chemistry
Triterpenes - isolation & purification
Triterpenes - pharmacology
Triterpenoids
title Isolation of C-29 oxygenated oleanane triterpenoids and a (+)-muurolene type sesquiterpenoid from the fruiting bodies of Fuscoporia torulosa and their bioactivities
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