14 results on '"Phat NT"'
Search Results
2. In vitro and in silico studies of alpha glucosidase inhibition and antifungal activity of coffea canephora husk.
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Mai TTN, Minh PN, Phat NT, Thanh Chi M, Chi Hien D, Nguyen VK, Duong TH, Nha TT, Minh An TN, Huyen Tran NN, and Tri MD
- Abstract
The coffea canephora husk, a protected agricultural crop, is abundant in Vietnam. Examining the effects of C. canephora husk compounds on α-glucosidase and antifungal drug activity was the primary objective of this research. A cholestane-type steroid, coffeacanol A (1), was extracted from the ethyl acetate extract. Three cholestane-type derivatives (2-4) and three additional known compounds (5-7) were separated, and we used a variety of chromatographic techniques to identify a total of six substances. We used NMR to determine the chemical structures of these substances. Extensive HR-MS-ESI analysis and NMR experimental data were used to confirm the structure of the novel metabolite (1). The cholestane-type steroid was initially discovered in the Coffea canephora husk, marking the first instance in the coffee plant family to reveal chemical structures (1-7). The inhibition of α-glucosidase was found to be significantly higher in all compounds tested, with the exception of compounds (2) and (5). In vitro , the positive control showed the lowest inhibition, and the range of IC
50 values was calculated to be 27.4 to 96.5 μM, which is lower than the IC50 value of 214.50 μM for the acarbose control. With an IC50 value of 27.4 μM, compound (7) showed the greatest capacity to inhibit α-glucosidase among the test compounds. The 3TOP and 2VF5 enzyme crystal structures were used for in silico docking investigations and validations of compounds (1-7). In silico calculations to explain how compound (7) shows high activity in vitro via the enzyme inhibition mechanism by residual amino acids, like Gly 1102 (B chain) and Glu 1095 (B chain), and their relative interaction with compounds (7) and acarbose. Compound (7) exhibited the best antifungal activity against Candida albicans fungus among three fungi, namely Candida albicans , Trichophyton mentagrophytes , and Trichophyton rubrum , with a MIC value of 25 μM. Compound (7) and fluconazole combined to form similar interactions in the contact ligand model, including the functional group, capping group, and linker part, which interacted fully with the 2VF5 enzyme, leading to effective in vitro inhibition., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (This journal is © The Royal Society of Chemistry.)- Published
- 2024
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3. Corrigendum: Effectiveness of perindopril/amlodipine fixed-dose combination in the treatment of hypertension: a systematic review.
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Van Dat T, Tu VL, Thu LNA, Quang NNA, Binh V, Nga NTQ, Loc DH, Nguyen TTH, Ngoc Hien Tam D, Huynh HH, Trung TD, Do U, Phat NT, Hung DT, Nguyen QH, Yen NTH, and Minh LHN
- Abstract
[This corrects the article DOI: 10.3389/fphar.2023.1156655.]., (Copyright © 2024 Van Dat, Tu, Thu, Quang, Binh, Nga, Loc, Nguyen, Ngoc Hien Tam, Huynh, Trung, Do, Phat, Hung, Nguyen, Yen and Minh.)
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- 2024
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4. In vitro and in silico docking and molecular dynamic of antimicrobial activities, alpha-glucosidase, and anti-inflammatory activity of compounds from the aerial parts of Mussaenda saigonensis .
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Ngoc Mai TT, Minh PN, Phat NT, Chi MT, Duong TH, Nhi Phan NH, Minh An TN, Dang VS, Van Hue N, Hong Anh NT, and Tri MD
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Twelve compounds were isolated from Mussaenda saigonensis aerial parts through phytochemical analysis and the genus Mussaenda is the first place where the compounds 4-6 and 11-12 have been found. Based on the ability to inhibit NO production in RAW264.7 cells, compound 2 has demonstrated the strongest anti-inflammatory activity in vitro with an IC
50 of 7.6 μM, as opposed to L-NMMA's IC50 of 41.3 μM. Compound 12 was found to be the most effective inhibitor of alpha-glucosidase enzyme in vitro , with an IC50 value of 42.4 μM (compared to 168 μM for acarbose). Compounds 1-12 were evaluated in vitro for antimicrobial activity using the paper dish method. Compound 11 demonstrated strong antifungal activity against M. gypseum with a MIC value of 50 μM. In silico docking for antimicrobial activity, pose 90 or compound 11 docked well to the 2VF5 enzyme, PDB, which explains why compound 11 had the highest activity in vitro . Entry 2/pose 280 demonstrated excellent anti-inflammatory activity in silico . The stability of the complex between pose 280 and the 4WCU enzyme for anti-inflammatory activity has been assessed using molecular dynamics over a simulation course ranging from 0 to 100 ns. It has been found to be stable from 60 and 100 ns. The Tyr 159 (95%, H-bond via water bridge), Asp 318 (200%, multiple contacts), Met 273 (75%, hydrophobic interaction via water bridge), and Gln 369 (75%, H-bond via water bridge) interacted well within the time range of 0 to 100 ns. It has more hydrophilic or polar pharmacokinetics., Competing Interests: No potential conflict of interest was reported by the authors., (This journal is © The Royal Society of Chemistry.)- Published
- 2024
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5. Correction: Antimicrobial and alpha-glucosidase inhibitory flavonoid glycosides from the plant Mussaenda recurvata : in vitro and in silico approaches.
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Ngoc Mai TT, Minh PN, Phat NT, Duong TH, Minh An TN, Dang VS, Van Hue N, and Tri MD
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[This corrects the article DOI: 10.1039/D4RA00666F.]., (This journal is © The Royal Society of Chemistry.)
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- 2024
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6. Antimicrobial and alpha-glucosidase inhibitory flavonoid glycosides from the plant Mussaenda recurvata : in vitro and in silico approaches.
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Ngoc Mai TT, Minh PN, Phat NT, Duong TH, Minh An TN, Dang VS, Van Hue N, and Tri MD
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Seven flavonoid glycosides were isolated from the aerial portions of Mussaenda recurvata during a phytochemical analysis. This comprised one novel component, ecurvoside, and six well-studied compounds, namely astragalin, isoquercitrin, nicotiflorin, rutin, hesperidin, and neohesperidin. The chemical structures of compounds were identified using spectroscopic techniques and a comparison with previously published studies. Alpha-glucosidase inhibition testing was carried out on all isolated compounds. The compounds evaluated have IC
50 values between 35.6 and 239.1 g mL-1 , indicating a moderate degree of inhibition. In vitro antimicrobial activities of compounds 1-7 have screened against the bacteria Pseudomonas aeruginosa ( P. aeruginosa ), methicillin-resistant Staphylococcus aureus (MRSA), Streptococcus faecalis ( Strep. faecalis ), and fungi: Candida albicans ( C. albicans ), Trichophyton mentagrophytes ( T. mentagrophytes ), and Microsporum gypseum ( M. gypseum ), where compound 6 showed excellent activity against fungi T. mentagrophytes with an MIC value of 12.5 μM. In accordance with the molecular docking study, ecurvoside (1) or pose 472 interacted well with the 3TOP enzyme: PDB and the molecular dynamic simulations proved that the complex of ecurvoside and 3TOP has a stable simulation time of 50-100 ns and the significant residual amino acids in 3TOP are relative to interactions more than one time such as Asp 960, Glu 961, Lys 1088, Glu 1095, Arg 1097, Gly 1102, Thr 1103, Gln 1109, Glu 1178: A chain and Glu 1095, Thr 1101, and Asp 1107: B chain. The docking studies of compounds 1-7 to the enzyme 2VF5 explain the general mechanism to inhibit bacteria and proved that compound 6 (pose 370) inhibited stronger than compound 7 (pose 362) and compound 5 (pose 280), and compounds 1 to 4 do not interact well with 2VF5., Competing Interests: There are no conficts to declare., (This journal is © The Royal Society of Chemistry.)- Published
- 2024
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7. Effectiveness of perindopril/amlodipine fixed-dose combination in the treatment of hypertension: a systematic review.
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Dat TV, Tu VL, Thu LNA, Quang NNA, Binh V, Nga NTQ, Loc DH, Nguyen TTH, Tam DNH, Huynh HH, Trung TD, Do U, Phat NT, Hung DT, Nguyen QH, Yen NTH, and Minh LHN
- Abstract
Background: Uncontrolled blood pressure is a major risk factor for cardiovascular diseases. Fixed-dose combination (FDC) therapy offers a promising approach to addressing this challenge by providing a convenient single-tablet solution that enhances the effectiveness of blood pressure control. In our systematic review, we assess the effectiveness of perindopril/amlodipine FDC in managing blood pressure. Methods: We conducted a comprehensive search across four primary electronic databases, namely, PubMed, Virtual Health Library (VHL), Global Health Library (GHL), and Google Scholar, as of 8 February 2022. Additionally, we performed a manual search to find relevant articles. The quality of the selected articles was evaluated using the Study Quality Assessment Tools (SQAT) checklist from the National Institute of Health and the ROB2 tool from Cochrane. Results: Our systematic review included 17 eligible articles. The findings show that the use of perindopril/amlodipine FDC significantly lowers blood pressure and enhances the quality of blood pressure control. Compared to the comparison group, the perindopril/amlodipine combination tablet resulted in a higher rate of blood pressure response and normalization. Importantly, perindopril/amlodipine FDC contributes to improved patient adherence with minimal side effects. However, studies conducted to date have not provided assessments of the cost-effectiveness of perindopril/amlodipine FDC. Conclusion: In summary, our analysis confirms the effectiveness of perindopril/amlodipine FDC in lowering blood pressure, with combination therapy outperforming monotherapy and placebo. Although mild adverse reactions were observed in a small subset of participants, cost-effectiveness assessments for this treatment remain lacking in the literature., Competing Interests: Author DT was employed by Asia Shine Trading & Service Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Dat, Tu, Thu, Quang, Binh, Nga, Loc, Nguyen, Tam, Huynh, Trung, Do, Phat, Hung, Nguyen, Yen and Minh.)
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- 2024
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8. Pharmacological Activities and Safety of Ganoderma lucidum Spores: A Systematic Review.
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Thuy NHL, Tu VL, Thu LNA, Giang TT, Huyen DTK, Loc DH, Tam DNH, Phat NT, Huynh HH, Truyen TTTT, Nguyen QH, Do U, Nguyen D, Dat TV, and Minh LHN
- Abstract
Ganoderma lucidum is traditionally used to prevent and treat some diseases such as liver disorders, hypertension, insomnia, diabetes, and cancer. G. lucidum spore extracts are also reported to share similar bioactivities as extracts from its other parts. However, there is no systematic review that elucidates its pharmacological effect. Our aim is to comprehensively summarise current evidence of G. lucidum spore extracts to clarify its benefits to be applied in further studies. We searched five primary databases: PubMed, Virtual Health Library (VHL), Global Health Library (GHL), System for Information on Grey Literature in Europe (SIGLE), and Google Scholar on September 13, 2021. Articles were selected according to inclusion and exclusion criteria. A manual search was applied to find more relevant articles. Ninety studies that reported the pharmacological effects and/or safety of G. lucidum spores were included in this review. The review found that G. lucidum spore extracts showed quite similar effects as other parts of this medicinal plant including anti-tumor, anti-inflammatory, antioxidant effects, and immunomodulation. G. lucidum sporoderm-broken extract demonstrated higher efficiency than unbroken spore extract. G. lucidum extracts also showed their effects on some genes responsible for the body's metabolism, which implied the benefits in metabolic diseases. The safety of G. lucidum should be investigated in depth as high doses of the extract could increase levels of cancer antigen (CA)72-4, despite no harmful effect shown on body organs. Generally, there is a lot of potential in the studies of compounds with pharmacological effects and new treatments. Sporoderm breaking technique could contribute to the production of extracts with more effective prevention and treatment of diseases. High doses of G. lucidum spore extract should be used with caution as there was a concern about the increase in CA., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Thuy et al.)
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- 2023
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9. Recurvataside, a new saponin from aerial parts of Mussaenda recurvata .
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Tri MD, Tram TTM, Ngoc LH, An TNM, Phat NT, Minh PN, Kieu NV, Van Son D, Nguyen TP, Mai TTN, and Duong TH
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- Lipopolysaccharides, Plant Components, Aerial, Molecular Structure, Saponins pharmacology, Saponins chemistry, Triterpenes pharmacology, Triterpenes chemistry, Rubiaceae chemistry
- Abstract
A new glycoside, recurvataside ( 1 ) and six known compounds, quinovic acid ( 2 ), quinovic acid 28- O - β -D-glucopyranosyl ester ( 3 ), 3- O - β -D-glucopyranosylquinovic acid ( 4 ), 3- O - β -D-glucopyranosylquinovic acid 28- O - β -D-glucopyranosyl ester ( 5 ), pomolic acid ( 6 ), and ursolic acid ( 7 ) were isolated from aerial parts of Mussaenda recurvata . The structure of compound 1 was identified from its spectroscopic data and by comparison with the literature. Recurvataside represents the first occurrence of δ -oleanolic acid saponin bearing two D-glucose units at C-3 and C-28 in nature. This is the first time δ -oleanane-type saponin reported in the genus Mussaenda . Compounds 1-7 were evaluated the cytotoxicity against two cancer cell lines MCF-7 and HepG2. Among them, only compound 7 exhibited moderate activity against MCF-7 and HepG2 cell lines with IC
50 value of 16.97 ± 1.55 and 20.28 ± 1.00 μM, respectively. Compounds 1 - 7 were also tested for their inhibitory NO production in LPS-stimulated RAW264.7 cells. Compounds 3 , 5 , and 7 showed significant reduction of nitrite accumulation in LPS-stimulated RAW 264.7 cells with the IC50 values of 8.81 ± 0.48, 13.42 ± 0.84, and 18.37 ± 0.67 μM, respectively.- Published
- 2023
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10. A Review of the In Vitro Inhibition of α-Amylase and α-Glucosidase by Chalcone Derivatives.
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Tran TD, Tu VL, Hoang TM, Dat TV, Tam DNH, Phat NT, Hung DT, Huynh HH, Do TC, Le HH, and Minh LHN
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Diabetes mellitus is a chronic metabolic disease relating to steady hyperglycemia resulting from the impairment of the endocrine and non-endocrine systems. Many new drugs having varied targets were discovered to treat this disease, especially type 2 diabetes. Among those, α-glucosidase inhibitors showed their effects by preventing the digestion of carbohydrates through their inhibition against α-amylase and α-glucosidase. Recently, chalcones have attracted considerable attention as they have a simple structure, are easily synthesized as well as have a variety of derivatives. Some reports suggested that chalcone and its derivates could inhibit α-amylase and α-glucosidase. This narrative review provides a comprehensive evaluation of the inhibition of chalcone and its derivatives against α-amylase and α-glucosidase that were reviewed and reported in published scientific articles. Twenty-eight articles were reviewed after screening 207 articles found in four databases, including PubMed, Google Scholar, VHL (Virtual Health Library), and GHL (Global Health Library). This review presented the inhibitory effects of varied chalcones, including chalcones with a basic structural framework, azachalcones, bis-chalcones, chalcone oximes, coumarin-chalcones, cyclohexane chalcones, dihydrochalcones, and flavanone-coupled chalcones. Many of these chalcones had significant inhibition against α-amylase as well as α-glucosidase that were comparable to or even stronger than standard inhibitors. This suggested that such compounds could be potential candidates for the discovery of new anti-diabetic remedies in the years to come., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Tran et al.)
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- 2023
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11. Monkeypox Virus Infection in 2 Female Travelers Returning to Vietnam from Dubai, United Arab Emirates, 2022.
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Dung NT, Hung LM, Hoa HTT, Nga LH, Hong NTT, Thuong TC, Ngoc NM, Ny NTH, Quy VT, Thoa VTK, Thanh NT, Tho PV, Toan LM, Quang VM, Man DNH, Phat NT, Phuong TTL, Tam TTT, Thoa PTN, Tam NH, Lan TTT, Thanh TT, Maurer-Stroh S, Khanh LTT, Yen LM, Hung NH, Thwaites G, Tung NLN, Thwaites L, Chau NVV, Anh NT, and Van Tan L
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- Humans, Female, United Arab Emirates epidemiology, Vietnam epidemiology, Monkeypox virus, Mpox (monkeypox) diagnosis, Mpox (monkeypox) epidemiology
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Mpox was diagnosed in 2 women returning to Vietnam from the United Arab Emirates. The monkeypox viruses belonged to an emerging sublineage, A.2.1, distinct from B.1, which is responsible for the ongoing multicountry outbreak. Women could contribute to mpox transmission, and enhanced genomic surveillance is needed to clarify pathogen evolution.
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- 2023
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12. End-to-end deep learning model for segmentation and severity staging of anterior cruciate ligament injuries from MRI.
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Dung NT, Thuan NH, Van Dung T, Van Nho L, Tri NM, Vy VPT, Hoang LN, Phat NT, Chuong DA, and Dang LH
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- Male, Humans, Female, Adult, Retrospective Studies, Magnetic Resonance Imaging methods, Knee Joint, Rupture, Sensitivity and Specificity, Anterior Cruciate Ligament Injuries diagnostic imaging, Anterior Cruciate Ligament Injuries surgery, Deep Learning
- Abstract
Purpose: The purpose of this study was to develop a semi-supervised segmentation and classification deep learning model for the diagnosis of anterior cruciate ligament (ACL) tears on MRI based on a semi-supervised framework, double-linear layers U-Net (DCLU-Net)., Materials and Methods: A total of 297 participants who underwent of total of 303 MRI examination of the knee with fat-saturated proton density (PD) fast spin-echo (FSE) sequence in the sagittal plane were included. There were 214 men and 83 women, with a mean age of 37.46 ± 1.40 (standard deviation) years (range: 29-44 years). Of these, 107 participants had intact ACL (36%), 98 had partially torn ACL (33%), and 92 had fully ruptured ACL (31%). The DCLU-Net was combined with radiomic features for enhancing performances in the diagnosis of ACL tear. The different evaluation metrics for both classification (accuracy, sensitivity, accuracy) and segmentation (mean Dice similarity coefficient and root mean square error) were compared individually for each image class across the three phases of the model, with each value being compared to its respective value from the previous phase. Findings at arthroscopic knee surgery were used as the standard of reference., Results: With the addition of radiomic features, the final model yielded accuracies of 90% (95% CI: 83-92), 82% (95% CI: 73-86), and 92% (95% CI: 87-94) for classifying ACL as intact, partially torn and fully ruptured, respectively. The DCLU-Net achieved mean Dice similarity coefficient and root mean square error of 0.78 (95% CI: 0.71-0.80) and 0.05 (95% CI: 0.06-0.07), respectively, when segmenting the three ACL conditions with pseudo data (P < 0.001)., Conclusion: A dual-modules deep learning model with segmentation and classification capabilities was successfully developed. In addition, the use of semi-supervised techniques significantly reduced the amount of manual segmentation data without compromising performance., Competing Interests: Declaration of Competing Interest None., (Copyright © 2022 Société française de radiologie. Published by Elsevier Masson SAS. All rights reserved.)
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- 2023
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13. In vitro anti-inflammatory, in silico molecular docking and molecular dynamics simulation of oleanane-type triterpenes from aerial parts of Mussaenda recurvata .
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Tri MD, Phat NT, Minh PN, Chi MT, Hao BX, Minh An TN, Alam M, Van Kieu N, Dang VS, Mai TTN, and Duong TH
- Abstract
Bioactive-guided investigation of the aerial parts of Mussaenda recurvata Naiki, Tagane, and Yahara (Rubiaceae) led to the isolation of four triterpenes, including two new triterpenes recurvatanes A and B (1 and 2), along with two known compounds 3β,6β,23-trihydroxyolean-12-en-28-oic acid (3) and 3β,6β,19α,23-tetrahydroxyolean-12-en-28-oic acid (4). The chemical structures of the compounds were identified from spectroscopic data and by comparison with the literature. A comprehensive review of NMR data of the oleanane-type triterpenes bearing 3-hydroxy and 4-hydroxymethylene groups indicated the characteristic spectroscopic features in this series. Compounds 1-4 were evaluated for the inhibitory NO production in LPS-stimulated RAW264.7 cells. Compounds 2 and 3 showed a moderate reduction of nitrite accumulation with IC
50 values of 55.63 ± 2.52 and 60.08 ± 3.17 μM, respectively. Molecular docking model dedicated to compound 3 or pose 420, which is the best candidate among docking poses of compounds 1-4 interacted well with the crystal structure of enzyme 4WCU: PDB. The best ligand molecule, pose 420 in terms of binding energy obtained from docking studies on molecular dynamics (MD) simulations for 100 ns exhibited non-bonding interactions with the protein and remained stable inside the active site., Competing Interests: The authors have no potential conflicts of interest to report., (This journal is © The Royal Society of Chemistry.)- Published
- 2023
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14. A new 26-norlanostane from Phlogacanthus turgidus growing in Vietnam.
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Tri MD, Phat NT, Trung NT, Phan CD, Minh PN, Chi MT, Nguyen TP, Dang CH, Hong Truong L, Pham NKT, Mai TTN, and Duong TH
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- Antineoplastic Agents, Phytogenic isolation & purification, Antineoplastic Agents, Phytogenic pharmacology, Glycoside Hydrolase Inhibitors isolation & purification, Glycoside Hydrolase Inhibitors pharmacology, Humans, K562 Cells, Molecular Structure, Phytochemicals isolation & purification, Phytochemicals pharmacology, Vietnam, alpha-Glucosidases, Acanthaceae chemistry, Triterpenes isolation & purification, Triterpenes pharmacology
- Abstract
Chemical investigation on chloroform extract of Phlogacanthus turgidus led to the isolation of one new compound namely turgidol, together with five known triterpenoids, lupeol, lupenone, betulin, betulinic acid, and taraxerol. Their structures and stereochemistry have been determined by 1 D and 2 D NMR analysis, high resolution mass spectrometry, and compared with those in literatures. The relative configuration of turgidol was defined using DFT-NMR chemical shift calculations and subsequent DP4+ probability method. Turgidol, betulin, and betulinic acid were evaluated for cytotoxic activity toward K562 cancer cell line and the alpha-glucosidase inhibition.
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- 2022
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