Nopawit Khamto

ORCID: 0000-0003-2321-3722
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Research Areas
  • Computational Drug Discovery Methods
  • Phytochemistry and Biological Activities
  • Crystallization and Solubility Studies
  • Bioactive natural compounds
  • X-ray Diffraction in Crystallography
  • Natural product bioactivities and synthesis
  • Synthesis and biological activity
  • Bioactive Compounds and Antitumor Agents
  • Analytical Chemistry and Chromatography
  • biodegradable polymer synthesis and properties
  • Molecular spectroscopy and chirality
  • Organometallic Complex Synthesis and Catalysis
  • Cancer Mechanisms and Therapy
  • Axial and Atropisomeric Chirality Synthesis
  • Moringa oleifera research and applications
  • Pharmacological Effects of Natural Compounds
  • Fungal and yeast genetics research
  • Flavonoids in Medical Research
  • Cancer therapeutics and mechanisms
  • Liver Disease Diagnosis and Treatment
  • Phytochemistry and Bioactivity Studies
  • Cell death mechanisms and regulation
  • Berberine and alkaloids research
  • Liver Disease and Transplantation
  • Curcumin's Biomedical Applications

Chiang Mai University
2021-2025

The emergence of SARS-CoV-2 in December 2019 has become a global issue due to the continuous upsurge patients and lack drug efficacy for treatment. 3CLPro is one most intriguing biomolecular targets among scientists worldwide developing antiviral drugs its relevance viral replication transcription. Herein, we utilized computer-assisted screening investigate 326 natural products from Thai traditional plants using structure-based virtual against 3CLPro. Following screening, top 15 compounds...

10.1021/acs.jcim.2c01309 article EN Journal of Chemical Information and Modeling 2023-01-17

The emergence of the COVID-19 situation has become a global issue due to lack effective antiviral drugs for treatment. Flavonoids are class plant secondary metabolites that have activity against SARS-CoV-2 through inhibition main protease (3CLpro). In this study, 22 flavonoids obtained from natural sources and semisynthetic approaches were investigated their inhibitory 3CLpro, along with cytotoxicity on Vero cells. protein–ligand interactions examined using molecular dynamics simulation....

10.1021/acs.jcim.3c01477 article EN Journal of Chemical Information and Modeling 2024-01-26

Liver fibrosis, characterized by excessive extracellular matrix deposition, is driven activated hepatic stellate cells (HSCs). Due to the limited availability of anti-fibrotic drugs, research on therapeutic agents continues. Here we have investigated

10.3390/ijms25168995 article EN International Journal of Molecular Sciences 2024-08-19

2′,4′-Dihydroxy-6′-methoxy-3′,5′-dimethylchalcone (DMC), a natural product derived from Syzygium nervosum A. Cunn. ex DC., was investigated for its inhibitory activities against various cancer cell lines. In this work, we the effects of DMC and available anticervical drugs (5-fluorouracil, cisplatin, doxorubicin) on three human cervical lines (C-33A, HeLa, SiHa). displayed antiproliferative activity in C-33A, SiHa cells, with IC50 values 15.76 ± 1.49, 10.05 0.22, 18.31 3.10 µM, respectively....

10.3390/molecules27041154 article EN cc-by Molecules 2022-02-09

We modified the chemical structure of 2',4'-dihydroxy-6'‑methoxy-3',5'-dimethylchalcone (DMC, 1), a phytochemical found in seed Syzygium nervosum A.Cunn. ex DC., by conjugation with amino acid L-alanine (compound 3a) or L-valine 3b) to enhance anticancer activity and water solubility. Compounds 3a 3b had antiproliferative human cervical cancer cell lines (C-33A, SiHa HeLa), half-maximal inhibitory concentrations (IC50) 7.56 ± 0.27 8.24 0.14 µM, respectively cells; these values were...

10.1016/j.ejps.2023.106390 article EN cc-by-nc-nd European Journal of Pharmaceutical Sciences 2023-02-20

The chemical structures of the parental compounds flavonoids from Boesenbergia rotunda were modified by conjugation with cinnamic acid to form cinnamoyl-flavonoid hybrid derivatives enhanced anti-inflammatory and SARS-CoV-2 Mpro-inhibitory properties. Cinnamoyl-flavonoid 6 10 showed potential inhibit Mpro IC50 values 52.49 22.62 μM. Compounds lower cytotoxicity in human lung cell lines MRC-5 A549 at concentrations greater than 50 effects on viability studied a 3D co-culture model treated...

10.1016/j.ejphar.2025.177636 article EN cc-by-nc European Journal of Pharmacology 2025-04-01

Combining phytochemicals with chemotherapeutic drugs has demonstrated the potential to surmount drug resistance. In this paper, we explore efficacy of pentagalloyl glucose (PGG) in modulating P-gp and reversing multidrug resistance (MDR) drug-resistant leukemic cells (K562/ADR). The cytotoxicity PGG was evaluated using a CCK-8 assay, cell apoptosis assessed flow cytometry. Western blotting used analyze protein expression levels. P-glycoprotein (P-gp) activity by monitoring kinetics...

10.3390/ph16091192 article EN cc-by Pharmaceuticals 2023-08-22

Although cisplatin is a first-line chemotherapy drug for head and neck squamous cell carcinoma (HNSCC), its therapeutic efficacy limited owing to serious side effects acquired resistance. This study determined whether combining pentagalloyl glucose (PGG) enhanced their anti-tumor activities on HNSCC lines. We investigated the anticancer effect of PGG combined with in 2D 3D multicellular spheroid culture. The results revealed that inhibited viability produced synergistic effects. potentiates...

10.3390/ph15070830 article EN cc-by Pharmaceuticals 2022-07-04

The quinazolinone scaffold is found in natural products and biologically active compounds, including inflammatory inhibitors. Major proteins or enzymes involved the inflammation process are regulated by amount of gene expression. Quinazolinone derivatives were investigated developed against genes cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS) lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophage cell line. mRNA...

10.1021/acsmedchemlett.3c00098 article EN ACS Medicinal Chemistry Letters 2023-08-15

Abstract This work investigates the high catalytic activity of bi‐functional lithium N ‐heterocyclic carbene ( bis LiNHCs) complexes in bulk ring‐opening polymerization (ROP) ε ‐caprolactone ‐CL) monomer at room temperature. The study employs a ROP technique using tetramethylene‐tethered [ ‐( ′‐alkyl/arylimidazolium)] hexafluorophosphate [Bim][PF 6 ]), benzyl alcohol (BnOH), and n ‐butyl BuLi) molar ratios 1:2:4. results show that 1,4‐ LiNHC 3a ) has highest capability, producing molecular...

10.1002/macp.202300129 article EN Macromolecular Chemistry and Physics 2023-06-29

2',4'-Dihydroxy-6'-methoxy-3',5'-dimethylchalcone (DMC, 1) was isolated from seeds of Syzygium nervosum A.Cunn. ex DC. exhibiting intriguing biological activities. Herein, thirty three DMC derivatives including 4'-O-monosubstituted-DMC (2), 7-O-acylated-4-hydroxycoumarin (3), stilbene-coumarin (4), 2',4'-disubstituted-DMC (5), and flavanone (6), were synthesised through acylation, alkylations, sulfonylation. These semi-synthetic evaluated for in vitro cytotoxicity against six carcinoma cell...

10.1039/d1ra05445g article EN cc-by-nc RSC Advances 2021-01-01

A new imidazolium ionic liquid (IL) halide conjugated with dimethylcardamonin (DMC, 1 ), namely [Bbim]Br-DMC ( 3 was synthesised to improve the biological activity of natural chalcone. DMC isolated from seeds Syzygium nervosum A. Cunn. ex DC. which an effective anti-breast cancer agent. The compound and showed anticancer in MDA-MB-231 cells IC 50 values 14.54 ± 0.99 μM 7.40 0.15 μM, respectively. MTT assay that had cytotoxic effect at least two-fold greater than but low toxic normal Hs...

10.1016/j.biopha.2024.117249 article EN cc-by-nc Biomedicine & Pharmacotherapy 2024-08-06

Talaromyces marneffei is a thermally dimorphic fungus that can cause life-threatening systemic mycoses, particularly in immunocompromised individuals. Fungal homeobox transcription factors control various developmental processes, including the regulation of sexual reproduction, morphology, metabolism, and virulence. However, function proteins T. has not been fully explored. Here, we searched genome for total predicted their biological relevance by performing gene expression analysis...

10.3390/jof10100687 article EN cc-by Journal of Fungi 2024-09-30

Methyl itaconate–anthracene adducts (MIAs) were applied for the absolute configuration determination of chiral secondary alcohols by 1 H NMR technique including DFT calculation and X-ray crystallography.

10.1039/d1ob01387d article EN Organic & Biomolecular Chemistry 2021-01-01

A study of the phytochemicals constituents stems of, Millettia phuwuaensis has led to isolation 7-methoxy-5/,6/- methylenedioxyisoflavone (1), and 12-deoxo-12α-hydroxyelliptone (2. Their  structures were confirmed using NMR spectroscopy. Both extracts the  purified compounds evaluated for their antibacterial, anti-HIV, cancer  activity. The antibacterial test results pure compound were  found be valuable, MIC is in range 12.5-200 mg/mL, of  0.188-6 respectively....

10.26538/tjnpr/v7i1.17 article EN cc-by-nc-nd Tropical Journal of Natural Product Research 2023-02-01
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