Yifu Guan

ORCID: 0000-0002-0800-7069
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About
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Research Areas
  • DNA and Nucleic Acid Chemistry
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • RNA and protein synthesis mechanisms
  • Phytochemistry and Biological Activities
  • Protein Interaction Studies and Fluorescence Analysis
  • Metal-Catalyzed Oxygenation Mechanisms
  • HIV/AIDS drug development and treatment
  • Pancreatitis Pathology and Treatment
  • Click Chemistry and Applications
  • Metal complexes synthesis and properties
  • Chemical Synthesis and Analysis
  • Natural Antidiabetic Agents Studies
  • Plant-based Medicinal Research
  • Protein Structure and Dynamics
  • Free Radicals and Antioxidants
  • Mass Spectrometry Techniques and Applications
  • Crystallography and molecular interactions
  • Biological Stains and Phytochemicals
  • Bioactive Compounds and Antitumor Agents
  • Morinda citrifolia extract uses
  • Bioactive Natural Diterpenoids Research
  • Synthesis and biological activity
  • Apelin-related biomedical research
  • Traditional and Medicinal Uses of Annonaceae

China Medical University
2025

First Hospital of China Medical University
2025

Chinese Academy of Medical Sciences & Peking Union Medical College
2025

State Ethnic Affairs Commission
2022-2025

Temple University
2018-2022

Guangxi University for Nationalities
2019-2022

Guangxi University of Chinese Medicine
2018-2019

Hong Kong Baptist University
2014-2018

Guangxi University
2018

Shanghai First People's Hospital
2017

Dietary phenols are antioxidants with diverse physiological functions that beneficial for human health. The objective of this research work was to investigate antioxidant activity p-coumaric acid (p-CA) using four in vitro methods, the protective effects against oxidative stress PC12 cells, and hypolipidemic on High fat-diet (HFD) mice model. p-CA exhibited moderate selected assay. highest chelating at 50 μg/mL found be 52.22%. Pretreatment significantly enhanced cell viability suppressed...

10.1016/j.biopha.2018.12.074 article EN Biomedicine & Pharmacotherapy 2018-12-31

The purpose of this research was to investigate the chemical profile, nutritional quality, antioxidant and hypolipidemic effects Mexican chia seed oil (CSO) in vitro. Chemical characterization CSO indicated content α-linolenic acid (63.64% total fatty acids) be highest, followed by linoleic (19.84%), saturated (less than 11%). Trilinolenin (53.44% triacylglycerols (TAGs)) found highest among seven TAGs CSO. capacity CSO, evaluated with ABTS•+ DPPH• methods, showed mild when compared...

10.3390/molecules23123219 article EN cc-by Molecules 2018-12-06

Abstract Trans -resveratrol is a natural stilbenoid possessing multifarious pharmacological benefits; however, when orally consumed, it rapidly metabolised by colonic microflora and converted to dihydro-resveratrol. Thus, this microbial metabolite of great therapeutic relevance. In the present study, upon oral administration dihydro-resveratrol (10–50 mg/kg), severity acute pancreatitis in cerulein-treated rats was significantly ameliorated as evidenced decreased α-amylase activities plasma...

10.1038/srep22859 article EN cc-by Scientific Reports 2016-03-14

The rapid ascension of immune checkpoint blockade treatments has placed an emphasis on the need for viable, robust, and noninvasive imaging methods proteins, which could be diagnostic value. Immunoconjugate-based positron emission tomography (immuno-PET) allows sensitive quantitative target levels promising potential evaluation proteins. However, advancement immuno-PET is currently limited by available tools, heavily rely full-length IgGs with Fc-mediated effects are heterogeneous mixtures...

10.1021/acs.molpharmaceut.9b00010 article EN Molecular Pharmaceutics 2019-03-15

Abstract We report the discovery of a facile peptide macrocyclization and stapling strategy based on fluorine thiol displacement reaction (FTDR), which renders class analogues with enhanced stability, affinity, cellular uptake, inhibition cancer cells. This approach enabled selective modification orthogonal fluoroacetamide side chains in unprotected peptides presence intrinsic cysteines. The identified benzenedimethanethiol linker greatly promoted alpha helicity variety substrates, as...

10.1038/s41467-022-27995-5 article EN cc-by Nature Communications 2022-01-17

Canthin-6-one alkaloids have consistently attracted the interest of medicinal chemists due to their wide range promising bioactivities, including antitumor, antifungal, antibacterial, and antiviral properties. However, low natural abundance in plants has constrained further exploration potential bioactivities. This study reports a comprehensive synthesis canthin-6-one alkaloids, utilizing key Suzuki coupling Cu-catalyzed amidation reactions construct core scaffold. Derivatives were...

10.3390/molecules30071546 article EN cc-by Molecules 2025-03-31

Seedpod, the nonedible portion of lotus (Nelumbo nucifera Gaertn.), was reported to be rich in polyphenols. The objective this study investigate major bioactive polyphenols seedpods. total polyphenol content (TPC) from ethanol extract seedpod (PELS) found 34.23 μg gallic acid equivalents (GAE)/mg extract. Four polyphenolic compounds were identified PELS, comprised one flavan-3-ol (catechin) and three flavonoids (kaemferol, quercetin hyperoside). In vitro antioxidant antiproliferative...

10.1002/fsn3.1165 article EN cc-by Food Science & Nutrition 2019-08-09

Acute pancreatitis is an inflammatory process originated in the pancreas; however, it often leads to systemic complications that affect distant organs. respiratory distress syndrome indeed predominant cause of death patients with severe acute pancreatitis. In this study, we aimed delineate ameliorative effect dihydro‐resveratrol, a prominent analog trans ‐resveratrol, against pancreatitis‐associated lung injury and underlying molecular actions. was induced rats repetitive injections cerulein...

10.1002/ptr.5576 article EN Phytotherapy Research 2016-02-01

A new lignan, vitexkarinol (1), as well a known neopaulownin (2), chalcone, 3-(4-hydroxyphenyl)-1-(2,4,6-trimethoxyphenyl)-2-propen-1-one (3), two dehydroflavones, tsugafolin (4) and alpinetin (5), dipeptides, aurantiamide acetate, sesquiterpene, vemopolyanthofuran, five carotenoid metabolites, vomifoliol, dihydrovomifoliol, dehydrovomifoliol, loliolide, isololiolide, were isolated from the leaves twigs of Vitex leptobotrys through bioassay-guided fractionation. The chalcone (3) was found to...

10.1021/np400779v article EN Journal of Natural Products 2014-01-09

Raman and ir spectra are reported for diethyl phosphate [(CH3CH2O)2PO-2] isotopomers incorporating carbon-13 at methylene group sites [(CH133CH2O)2PO-2] deuterium substituents on methyl carbons [(CH3CD2O)2PO-2, (CD3CH2O)2PO-2 (CD3CD2O)2PO-2]. The vibrational analyzed to develop a consistent set of assignments the C-C-O-P(O-2)-O-C-C network, which serves as model nucleic acid phosphodiester backbone. present study resolves previously conflicting skeleton provides firm empirical basis...

10.1002/(sici)1097-0282(199612)39:6<813::aid-bip7>3.0.co;2-y article EN Biopolymers 1998-12-06

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational Analysis of Nucleic Acids. 2. Ab Initio Calculation the Molecular Force Field and Normal Modes Dimethyl PhosphateYifu Guan, Godwin S.-C. Choy, Rainer Glaser, George J. Thomas Jr.Cite this: Phys. Chem. 1995, 99, 31, 12054–12062Publication Date (Print):August 1, 1995Publication History Published online1 May 2002Published inissue 1 August 1995https://pubs.acs.org/doi/10.1021/j100031a039https://doi.org/10.1021/j100031a039research-articleACS...

10.1021/j100031a039 article EN The Journal of Physical Chemistry 1995-08-01

An efficient and stereocontrolled synthetic strategy towards the synthesis of montanine-like alkaloids was developed. Our results suggest that structure elucidation for natural montabuphine needs further elaboration.

10.1039/c2ob25374g article EN Organic & Biomolecular Chemistry 2012-01-01

Tuberculosis (TB) is a highly contagious disease mainly caused by Mycobacterium tuberculosis H37 RV . Antitubercular (anti-TB) bioassay-guided isolation of the CHCl3 extract leaves and stems medicinal plant Ardisia gigantifolia led to two anti-TB 5-alkylresorcinols, 5-(8Z-heptadecenyl) resorcinol (1) 5-(8Z-pentadecenyl) (2). We further synthesized 15 derivatives based on these natural products. These compounds (natural synthetic) were evaluated for their activity against Resorcinols 1 2...

10.1111/cbdd.12756 article EN Chemical Biology & Drug Design 2016-03-19

Raman and ir spectra are reported for diethyl phosphate [(CH3CH2O)2PO-2] isotopomers incorporating carbon-13 at methylene group sites [(CH133CH2O)2PO-2] deuterium substituents on methyl carbons [(CH3CD2O)2PO-2, (CD3CH2O)2PO-2 (CD3CD2O)2PO-2]. The vibrational analyzed to develop a consistent set of assignments the C-C-O-P(O-2)-O-C-C network, which serves as model nucleic acid phosphodiester backbone. present study resolves previously conflicting skeleton provides firm empirical basis...

10.1002/(sici)1097-0282(199612)39:6<813::aid-bip7>3.3.co;2-c article EN Biopolymers 1996-12-01

Studies have implied the positive association of JAK2/STAT3 signaling with onset and severity acute pancreatitis (AP). However, definitive functional study in pathogenesis vivo is missing its potential as a therapeutic target underlying mechanisms remain to be determined.The aim this was explore role hyperlipidemia-intensified caerulin-induced AP target.Using rat model, we showed that activated pancreas systemic inflammation increased during AP. Pharmacological suppression JAK2 by inhibitor...

10.2174/1566524018666171205123723 article EN Current Molecular Medicine 2017-12-06
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