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Diterpene and flavonoid constituents of the newly identified Australian Olearia sp. Munro State Forest

University of New England, Australia
Greatrex, Ben ; Ozga, Theo ; Lyddiard, Dane
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25952/5ecb38be46997&rft.title=Diterpene and flavonoid constituents of the newly identified Australian Olearia sp. Munro State Forest&rft.identifier=10.25952/5ecb38be46997&rft.publisher=University of New England&rft.description=The phytochemistry and antimicrobial activity of the newly identified Australian plant Olearia sp. Munro State Forest was examined. Antimicrobial TLC bioautography-guided isolation followed by NMR spectroscopy was used to identify the known compounds 8-O-β-D-xylopyranosyl-ent-8β-hydroxylabdan-15-oic acid (1) and pinocembrin (7), and new compounds 8-O-β-D-xylopyranosyl-ent-labdan-8β,15-diol (2) and ent-15-hydroxyclerod-3-en-17-oic acid (4a). Compounds without apparent activity in TLC bioautography included the previously undescribed ent-clerod-3-en-15,17-dioic acid (3a) and ent-cleroda-3,13-dien-15,17-dioic acid (5a), as well as known ent-8β-hydroxylabdan-15-oic acid (6) and penduletin (8). This is the first phytochemical and antibacterial study on this species of Olearia and has shown it to be an abundant source of ent-labdanes and ent-clerodanes.&rft.creator=Greatrex, Ben &rft.creator=Ozga, Theo &rft.creator=Lyddiard, Dane &rft.date=2020&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=&rft_subject=Biologically Active Molecules&rft_subject=CHEMICAL SCIENCES&rft_subject=MEDICINAL AND BIOMOLECULAR CHEMISTRY&rft_subject=Natural Products Chemistry&rft_subject=ORGANIC CHEMISTRY&rft_subject=Expanding Knowledge in the Chemical Sciences&rft_subject=EXPANDING KNOWLEDGE&rft_subject=EXPANDING KNOWLEDGE&rft_subject=Expanding Knowledge in the Biological Sciences&rft.type=dataset&rft.language=English Access the data

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ben.greatrex@une.edu.au

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The phytochemistry and antimicrobial activity of the newly identified Australian plant Olearia sp. Munro State Forest was examined. Antimicrobial TLC bioautography-guided isolation followed by NMR spectroscopy was used to identify the known compounds 8-O-β-D-xylopyranosyl-ent-8β-hydroxylabdan-15-oic acid (1) and pinocembrin (7), and new compounds 8-O-β-D-xylopyranosyl-ent-labdan-8β,15-diol (2) and ent-15-hydroxyclerod-3-en-17-oic acid (4a). Compounds without apparent activity in TLC bioautography included the previously undescribed ent-clerod-3-en-15,17-dioic acid (3a) and ent-cleroda-3,13-dien-15,17-dioic acid (5a), as well as known ent-8β-hydroxylabdan-15-oic acid (6) and penduletin (8). This is the first phytochemical and antibacterial study on this species of Olearia and has shown it to be an abundant source of ent-labdanes and ent-clerodanes.

Issued: 2020

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