Background: Conventional chemotherapy (CC) administered to patients with non-small cell lung cancer (NSCLC) often causes adverse effects, such as cardiopulmonary dysfunction and immune system imbalance. Patients may experience anxiety and depression during the perioperative period due to various factors, such as treatment costs and cancer recurrence risks, thereby compromising the overall quality of life. Consequently, we hypothesized that integrating mindfulness-based stress reduction training (MSRT) with Jinshui Liujun decoction may mitigate negative emotions and promote recovery in patients with NSCLC.
View Article and Find Full Text PDFBioassay-guided isolation of the stems of led to one new adamantane-type polycyclic polyprenylated acylphloroglucinols (PPAPs), (-)-garpauvinin A (), and four known analogues (). The structure and absolute configuration of was established spectroscopic techniques and ECD method. All the isolates displayed moderate antiproliferative activity against HL-60, PC-3 and Caco-2 human cancer cell lines with IC values ranging from 0.
View Article and Find Full Text PDFStilbenes (based on the 1,2-diphenylethylene skeleton) are a class of plant polyphenols with rich structural and bioactive diversity. Twenty-six stilbenes, including five undescribed compounds (7,8-dioxy-4,3',5'-trihydroxystilbene, trans-13'-methoxygnetin H, suffruticosol E, paestibenetrimerols A and B), were isolated from the seedcases of Paeonia suffruticosa Andrews. Their structures were elucidated by spectroscopic analyses and comparison with previously reported data.
View Article and Find Full Text PDFJ Asian Nat Prod Res
July 2023
Two new dimers of ambuic acid, pestaloversicoloric acids A () and B (), and a known derivative, 13()-hydroxyambuic acid (), were isolated from the static fermentation product of . The structural identification was accomplished via analyses on the data of HR-MS, 1 D and 2 D NMR, and ECD. Different from the well-known -type dimer, torreyanic acid, compounds and represent the first example of -type product derived from the intermolecular Diels-Alder reaction of two molecules of ambuic acid derivative with the identical absolute stereochemistry.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
May 2022
The chemical constituents from the roots of Thalictrum cultratum and T. baicalense were investigated. By various isolation methods, such as silica gel, aluminium oxide, ODS, and Sephadex LH-20 column chromatographies, and semi-preparative HPLC, 11 simple isoquinoline alkaloids were isolated from the ethanol extract of the roots of these two plants, including a new compound, named dehydrothalflavine(1), and ten known ones(2-11): N-methylcorydaline(2), N-methylthalidaldine(3), thaliflavine(4), oxyhydrastinine(5), noroxyhydrastinine(6), dimethoxyisoquinolone(7), thalactamine(8), dehydronoroxyhydrastinine(9), 6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline(10), and isopicnarrhine(11).
View Article and Find Full Text PDFSix alkaloids peharmalines F-K, along with 14 known ones, were isolated from the aerial part of Peganum harmala L.. The structures of the isolated compounds were determined based on their HR-ESI-MS data, extensive NMR spectroscopic analyses, and ECD calculations.
View Article and Find Full Text PDFSix new tirucallane-type triterpenoids (1-6), along with ten known triterpenoids, were isolated from methylene chloride extract of the resin of Boswellia carterii Birdw. By the application of the comprehensive spectroscopic data, the structures of the compounds were clarified. The experimental electronic circular dichroism spectra were compared with those calculated, which allowed to assign the absolute configurations.
View Article and Find Full Text PDFBaicalensines A () and B () were isolated from the roots of and structurally characterized using spectroscopic data, C NMR calculations, and the CASE algorithm. Compound , representing a new class of alkaloid dimers, contains berberine conjugated to a ring-opened isoquinoline. Compound is the first reported natural benzylisoquinoline bearing a formyl group at C-3.
View Article and Find Full Text PDFInspired by the intriguing structures and bioactivities of polyprenylated xanthones, ten previously undescribed polyprenylated xanthones, nujiangxanthones G-P (1-10), and fifteen known ones (11-25) were isolated from the twigs and leaves of Garcinia nujiangensis. The structures of these compounds were established on the basis of spectroscopic data as well as comparison with the literature. Most of the isolates showed potent cytotoxicity against selected cancer cells.
View Article and Find Full Text PDFTwo new lignanamides, majusamides A and B (1 and 2), and two new alkaloids, chelidoniumine (3) and tetrahydrocoptisine N-oxide (4), together with six known hydroxycinnamic acid amides (HCCA) were isolated from the 75% ethanol extract of Chelidonium majus through the silica gel, Sephadex LH-20, MCI, ODS column chromatography, and semi-HPLC. Their structures were determined on the basis of spectroscopic data and physico-chemical methods. The absolute configurations of 1-3 were determined by electronic circular dichroism (ECD) calculations.
View Article and Find Full Text PDFA new depsidone, paucinervin Q (1), a new dichromone, paucinervin R (2), and a known compound, paucinervin B (3), were isolated from the stems of Garcinia paucinervis by various chromatographic methods. Their structures were determined by analysis of spectroscopic data. The isolates were evaluated for their antiproliferative activity against three cancer cell lines HL-60, PC-3 and CaCo-2.
View Article and Find Full Text PDFA new hybrid of dehydroergosterol and nitrogenous alternariol derivative, pestauvicomorpholine A (1), and three alternariol analogues (2-4) including a new aminated one, pestauvicolactone A (2), were isolated from the fermentation product of the fungus Pestalotiopsis uvicola on rice media. Compounds 1 and 2 represent the first example of aza-alternariol and aza-alternariol-steroid derived from transamination followed by intermolecular hetero-Diels-Alder reaction.
View Article and Find Full Text PDFThree new compounds, ascotrichols A-B () and ascotrichrone A (), along with two known isocoumarin derivatives (), were isolated from the solid culture of a sea mud-derived fungus, sp. ZJ-M-5 on rice media. The structures were elucidated by extensive spectroscopic analyses, including 1D and 2D NMR data, and the absolute configurations were determined by electronic circular dichroism and biogenetic correlation.
View Article and Find Full Text PDFWith bioassay- and chemistry-guided fractionation, seven new caged prenylxanthones including two scalemic mixtures, epiisobractatin (1), 13-hydroxyisobractatin (2), 13-hydroxyepiisobractatin (3), 8-methoxy-8,8a-dihydrobractatin (4), 8-ethoxy-8,8a-dihydrobractatin (5), garcibracteatone (6), and 8-methoxy-8,8a-dihydroneobractiatin (7), and the eight known compounds 8-15 were isolated from the leaves of Garcinia bracteata. The structures were unambiguously elucidated through analysis of spectroscopic data. The 2D structures and relative configurations of 1 and 5 were confirmed by X-ray crystallographic analysis.
View Article and Find Full Text PDFBioassay-guided fractionation of the dichloromethane-soluble portion of the stems of Garcinia paucinervis led to the isolation of eight new xanthones, including three pairs of enantiomers, (+) and (-) paucinervins L-N (1a-3a, and 1b-3b), one optically pure compound, (-) paucinervin O (4), and one new analogue, paucinervin P (5), as well as thirteen known xanthones (6-18). Their structures were established by detailed analysis of extensive spectroscopic data. The absolute configurations of 1-4 were confirmed by ECD calculations.
View Article and Find Full Text PDFFive pairs of new 2-oxoindole alkaloids, (±)-peganumalines A-E (1-5), and a new indole alkaloid, peganumaline F (6), along with two known analogues, were isolated from the seeds of Peganum harmala. Their structures and absolute configurations were elucidated through spectroscopic analyses and quantum chemistry calculations. Notably, (±)-peganumalines A (1) represent a pair of rare 2-oxoindole dimeric alkaloid enantiomer with the hitherto unknown carbon skeleton.
View Article and Find Full Text PDFBioorg Med Chem Lett
January 2018
Seventeen quinazoline alkaloids and derivatives, containing two pairs of new epimers, named as (S)- and (R)-1-(2-aminobenzyl)-3-hydroxypyrrolidin-2-one β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranoside (1, 2), (S)- and (R)-vasicinone β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranoside (3, 4), and a new enantiomer (12b), together with six known ones (5-8, 10, and 12a), and three pairs of known enantiomers (9, 11, and 13), were isolated from the ethanol extracts of the seeds of Peganum harmala L.. Their structures including the absolute configuration were elucidated by using 1D and 2D NMR, and ECD calculation approaches.
View Article and Find Full Text PDFThree new diterpenoids, ebractenoids O~Q (1-3), and a new phenolic glucoside, γ-pyrone-3-O-β-d-(6-galloyl)-glucopyranoside (4), together with 6 known compounds, were isolated from the 95% ethanol extract of the roots of Euphorbia ebracteolata, and their structures were elucidated on the basis of spectroscopic data. The absolute configurations of 1-3 were determined by electronic circular dichroism (ECD) calculations. The inhibitory effects of all the isolates with exception of compounds 8 and 10 on the NO production in lipopolysaccharide (LPS)-induced macrophages were evaluated.
View Article and Find Full Text PDFJ Asian Nat Prod Res
February 2019
The structures of pestalrones A-B were revised via reinterpretation of the NMR data and a brief chemical transformation from the co-occurring polyketides, in our investigation on the secondary metabolites of Pestalotiopsis zonata, which also afforded a new α-pyrone derivative, pestazonatic acid, and four known analogs.
View Article and Find Full Text PDFInspired by the intriguing structures and bioactivities of dimeric alkaloids, 11 new thalifaberine-type aporphine-benzylisoquinoline alkaloids, thalicultratines A-K, a tetrahydroprotoberberine-aporphine alkaloid, thalicultratine L, and five known ones were isolated from the roots of Thalictrum cultratum. Their structures were defined on the basis of NMR and HRESIMS data. The antiproliferative activities of compounds 1-17 were evaluated against human leukemia HL-60 and prostate cancer PC-3 cells.
View Article and Find Full Text PDFA new biflavonoid, paucinervin K (1) and a new triterpene, 23-hydroxy-friedelin (2), together with eleven known compounds 3-13 were isolated from the leaves of Garcinia paucinervis. Their structures, including stereochemistry, were determined by spectroscopic analysis of NMR, MS, IR and ECD calculation and the octant rule. Some of the isolated compounds were tested for antiproliferative, α-glucosidase inhibitory and antioxidant activities in vitro.
View Article and Find Full Text PDFTwo new amide compounds, mariamides A and B (1-2), were obtained together with fourteen known compounds from the seeds of milk thistle (Silybum marianum). Their structures were established on the basis of extensive 1D and 2D NMR analyses, as well as HR-ESI-MS data. Most of the compounds showed significant antioxidant activities than positive control in ABTS and FRAP assays.
View Article and Find Full Text PDFThree new (1-3) and one known (4) bioactive terpenoids were isolated from the seeds of Silybum marianum based on the investigation to get new NO inhibitors. Their structures were determined by extensive NMR (1D and 2D NMR) and MS spectroscopic data, and the absolute configurations were identified by experimental and calculated ECD spectra. The NO inhibitory activities in murine microglial BV-2 cells and interactions with iNOS protein by molecular docking were evaluated for all compounds.
View Article and Find Full Text PDFJ Asian Nat Prod Res
July 2017
Two new d-threitol orsellinates (1-2) were isolated from the EtOAc extract of a sea mud-derived fungus, Ascotricha sp. ZJ-M-5, cultured in Czapek Dox broth. These two compounds featured in the symmetrical substitution of orsellinic acid or acetic acid, which was established on the basis of 1D and 2D NMR experiments.
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