One undescribed compound named fusagarone A () and ten secondary metabolites (-) were isolated from the endophytic fungus sp. L-3 derived from Chinese agarwood 'Qi-Nan'. The structure of was elucidated by NMR spectroscopy as well as HRESIMS data.
View Article and Find Full Text PDFAquisinenins G-I (-), three new 2-(2-phenylethyl)chromone-sesquiterpene hybrids, were isolated from the ethanol extract of Hainan agarwood derived from . Spectroscopic techniques, such as D and D NMR and HRESIMS, were used to determine their structures. Experimental and computed ECD data were compared to confirm their absolute configurations.
View Article and Find Full Text PDFFour new compounds, dimethyl 3,5-bis(4-hydroxyphenyl)-1H-pyrrole-2,4-dicarboxylate (1), dimethyl 3,5-bis(4-hydroxyphenyl)-1H-furan-2,4-dicarboxylate (2), 5α-hydroxy-6β-methoxy-ergosta-7,22E-dien-3-one (3), and 6-methoxy-strophasterol E (4), together with sixteen known compounds (5-20), were isolated from the fruiting bodies of Lanmaoa asiatica. The structures of new compounds were elucidated by extensive spectroscopic analysis and electronic circular dichroism (ECD) calculation. Among them, compounds 2, 4, 7, and 9 exhibited anti-inflammatory activity by suppressing NO production in lipopolysaccharide-stimulated RAW264.
View Article and Find Full Text PDFEthnopharmacological Relevance: Nauclea officinalis Pierre ex Pitard, a traditional medicinal plant cherished by the Li ethnic group, is renowned for its potent anti-allergic properties in the clinic, especially in alleviating respiratory inflammations. This plant is now extensively cultivated to harness its valuable extracts for the production of traditional cough syrup.
Aim Of The Study: To identify the active components responsible for its anti-allergic inflammatory properties and to elucidate the underlying mechanisms of action.
Nat Prod Res
January 2025
A new 12-membered resorcylic acid lactone, cochliomycin H (), and one known resorcylic acid lactone, -demethylated-zeaenol (), were isolated from sponge-derived fungus sp. ZYX-Z-4. The structure of was elucidated by 1D and 2D NMR spectroscopic as well as HR-ESI-MS analysis.
View Article and Find Full Text PDFInt J Syst Evol Microbiol
November 2024
A novel actinomycete, designated strain ZYX-F-249, was isolated from the gill of a leopard coral grouper in Yongxing Island, Hainan Province, China. Based on 16S rRNA gene sequence analysis, strain ZYX-F-249 belonged to the genus , with high similarities to ATCC 12950 (98.7 %), 211020 (98.
View Article and Find Full Text PDFFour new isocoumarin derivatives 12-O-acetyl-isocitreoisocoumarinol (1), (+)-(10R)-O-acetyl-diaportinol (2-a), (-)-(10S)-O-acetyl-diaportinol (2-b), peyroisocoumarin E (3) and new stereoconfigurations of three isocoumarin derivatives desmethyldichlorodiaportinol A (4), threo-monochlorodiaportinol A (5-a), erytheo-monochlorodiaportinol A (5-b), together with nine known ones (6-14), were separated from the rice fermentation of endophytic fungus Diaporthe arengae M2 isolated from Camellia oleifera. The structures of new compounds were determined by extensive spectroscopic analyses including nuclear magnetic resonance (NMR) and high resolution electrospray ionization mass spectroscopy (HR-ESI-MS). Compounds 4, 7, 8, 12, 13 exhibited definite inhibition against five strains of bacteria with the MIC values range from 16 μg/mL to 64 μg/mL.
View Article and Find Full Text PDFJ Agric Food Chem
October 2024
Agarwood, derived from the genus, is widely utilized in perfumery, traditional medicine, and cultural practices throughout Asia. Agarwood is rich in terpenes, especially sesquiterpenes, which are considered to be the source of its rare and exquisite fragrance. This Review consolidates recent research on sesquiterpene biosynthesis in agarwood and the influence of fungi on these processes, alongside a discussion of the potential medicinal value of agarwood sesquiterpenes.
View Article and Find Full Text PDFA new steroid named persteroid () and seven known compounds (-) were isolated from the marine-derived fungus sp. ZYX-Z-143. The structure of was determined by HRESIMS, NMR, and ECD calculations.
View Article and Find Full Text PDFChem Biodivers
December 2024
Two new indole-diterpenoids, penpaxilloids F and G (1 and 2), along with 11 known analogues (3-13), were isolated from the marine fungus Penicillium sp. ZYX-Z-718. The structures of the new compounds were identified by extensive spectroscopic analyses including HR-ESI-MS, UV, and NMR, as well as theoretical NMR chemical shifts and ECD calculations.
View Article and Find Full Text PDFFront Plant Sci
June 2024
Rubber tree () is reproduced by bud grafting for commercial planting, but significant intraclonal variations exist in bud-grafted clones. DNA methylation changes related to grafting may be partly responsible for intraclonal variations. In the current study, whole-genome DNA methylation profiles of grafted rubber tree plants (GPs) and their donor plants (DPs) were evaluated by whole-genome bisulfite sequencing.
View Article and Find Full Text PDFA novel actinobacterium, strain ZYX-F-186, was isolated from marine sediment sampled on Yongxing Island, Hainan Province, PR China. Based on the results of 16S rRNA gene sequence analysis, strain ZYX-F-186 belongs to the genus , with high similarity to KK1-3 (98.3 %), K11-0047 (98.
View Article and Find Full Text PDFPhytochemistry
June 2024
Twelve undescribed 2-(2-phenethyl)chromone dimers (1-12) were isolated from EtOAc extract of agarwood originating from Aquilaria filaria in the Philippines, guided by a UHPLC-MS analysis. Their structures were elucidated by 1D NMR, 2D NMR, and HR-ESI-MS spectra. The absolute configuration of 2-(2-phenylethyl)chromone dimers was determined by single-crystal X-ray diffraction analysis and comparison of the experimental and calculated ECD spectra.
View Article and Find Full Text PDFFive new cytochalasins, diaporchalasins A-E (1-5), together with 14 known congeners (6-19) were isolated from the endophytic fungus Diaporthe sp. BMX12, which was isolated from the branches of Aquilaria sinensis. The structures of the new compounds were elucidated by extensive spectroscopic analyses including high-resolution electron spray ionization mass spectrometry (HR-ESI-MS) and nuclear magnetic resonance (NMR).
View Article and Find Full Text PDFFitoterapia
June 2024
Seven new indole-diterpenoids, penpaxilloids A-E (1-5), 7-methoxypaxilline-13-ene (6), and 10-hydroxy-paspaline (7), along with 20 known ones (8-27), were isolated from the marine-derived fungus Penicillium sp. ZYX-Z-143. Among them, compound 1 was a spiro indole-diterpenoid bearing a 2,3,3a,5-tetrahydro-1H-benzo[d]pyrrolo[2,1-b][1,3]oxazin-1-one motif.
View Article and Find Full Text PDFPhytochemistry
February 2024
Three new sesquiterpenoids, dendrohercoglin A - C (1-3), and one new bibenzyl derivative, dendronbiline D (4), together with nine known sesquiterpenoids (5-13) were isolated from Dendrobium hercoglossum. The structures of the new compounds were elucidated by extensive spectroscopic analysis as well as NMR and ECD calculations. All the compounds were evaluated for their neuroprotective and anti-inflammatory activities.
View Article and Find Full Text PDFis a homology of medicine and food. This study aims to investigate the dominant chemical composition and explore the antioxidant properties of the ethanol extract of the leaves and stems of (AOE) on juvenile shrimp, . An in vitro test showed that AOE and its dominant chemical composition procyanidin B-2 () and epicatechin () presented DPPH and ABTS radical scavenging activities.
View Article and Find Full Text PDFEight previously undescribed indole-diterpenoids named penerpenes O-V (1-8), together with seven known analogues (9-14), were isolated from the marine soft coral-derived fungus Aspergillus sp. ZF-104. Their structures including the absolute configurations of these compounds were assigned on the basis of spectroscopic data and ECD analysis along with quantum ECD and NMR calculations.
View Article and Find Full Text PDFTwelve previously undescribed and four known lanostane triterpenoids were isolated from the fruiting bodies of Ganoderma calidophilum. The structures of undescribed compounds, ganodecalones H-S (1-12), were elucidated by extensive spectroscopic analysis as well as ECD and NMR calculations. Compound 4 showed significant inhibitory activity against human leukaemia cell line K562, gastric cancer cell line SGC-7901, and cervical cancer cell line HeLa with IC values of 13.
View Article and Find Full Text PDFTwo new compounds named 3()-hydroxy-1-(2,4,5-trihydroxy-3,6- dimethylphenyl)-hex-4-en-1-one () and acremonilactone (), together with nine known compounds (-), were isolated from the fermentation broth of . associated with marine sediments collected from South China Sea. NMR and HRESIMS spectroscopic analysis elucidated the structure of two new compounds.
View Article and Find Full Text PDFJ Agric Food Chem
July 2023
is a fungus widely distributed on Earth and has a high capacity to adapt to complex environments in soil, plants, or sea. It is an endophyte that can be used as a potential biocontrol agent to protect plants from pathogenic fungi, nematodes, and insects. However, the spectrum of secondary metabolites produced by has only scarcely been studied.
View Article and Find Full Text PDFTwo new rare trachylobane euphoratones A-B (-), together with five known diterpenoids (compounds ), were isolated from the aerial parts of . Their structures were unambiguously elucidated through HRESIMS, 1D and 2D NMR spectral analysis. Compounds , , and showed weak anti-inflammatory activities (IC 77.
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