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Benda M, Evans C, Yuan S, McClish IM, Berkey WJ, Areheart HE, Arnold ES, Tang ML, France S. Modular Enantioselective Total Syntheses of the erythro-7,9-Dihydroxy- and 9-Hydroxy-7-Keto-8,4'-Oxyneolignans. J Org Chem 2024; 89:9910-9922. [PMID: 38959240 PMCID: PMC11267612 DOI: 10.1021/acs.joc.4c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 07/05/2024]
Abstract
A modular, enantioselective approach to access the bioactive 7,9-dihydroxy- and 9-hydroxy-7-keto-8,4'-oxyneolignans is disclosed, which employs stereoselective Mitsunobu reactions of enantiopure 2-aryl-1,3-dioxan-5-ols and functionalized phenols. The enantiopure dioxanols are prepared through Sharpless asymmetric dihydroxylation of protected coniferyl or sinapyl alcohols and subsequent benzylidene acetal formation. Through a mix-and-match coupling approach, six of the eight possible erythro-7,9-dihydroxy-8,4'-oxyneolignan enantiomeric natural products (bearing a C-1' hydroxypropyl chain) were generated following sequential deprotection. Subsequent benzylic oxidation afforded the 7-keto-derivatives, resulting in enantioselective syntheses of each enantiomer of the natural products asprenol B and icariol A1.
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Affiliation(s)
- Meghan
C. Benda
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Caria Evans
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Renewable
Bioproducts Institute, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Center
for a Renewables-based Economy from WOOD (ReWOOD), Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Shaoren Yuan
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Ian M. McClish
- School
of Biological Sciences, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - William J. Berkey
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Renewable
Bioproducts Institute, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Center
for a Renewables-based Economy from WOOD (ReWOOD), Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Hailey E. Areheart
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Emily S. Arnold
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Michelle L. Tang
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Stefan France
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- School
of Biological Sciences, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Renewable
Bioproducts Institute, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- Center
for a Renewables-based Economy from WOOD (ReWOOD), Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Ajit A, Vishnu AG, Varkey P. Incorporation of grape seed extract towards wound care product development. 3 Biotech 2021; 11:261. [PMID: 33996373 DOI: 10.1007/s13205-021-02826-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/04/2021] [Indexed: 12/19/2022] Open
Abstract
Naturally derived ingredients are becoming more prevalent in therapeutic drug formulations due to consumers' concerns about chemical side effects. In the context of wound care, despite the impressive progress in therapeutic product development, drugs dispensed to treat impaired healing challenged by biofilms; excessive inflammation and oxidation are not yet really effective. Thus, the hunts for improved drug formulations preferably using natural ingredients that are cost-effective in accelerating the wound-healing process are of constant demand. The grape seed extract is extensively studied and is reported to be rich in phenolic compounds, unsaturated fatty acids and vitamins which exhibit numerous therapeutic benefits owing to their anti-inflammatory, anti-microbial, and anti-oxidative properties that support its potential use in the development of wound-healing products. We conducted a literature study using Scopus, PubMed, and Google Scholar including the keywords "grape seed extract" and "wound healing". We also scanned all the references cited by the retrieved articles. Accordingly, this review is aimed to (i) explore the various phytochemical constituents found in grape seed extracts along with their mechanism of action that instigate wound healing, (ii) to highlight the latest pre-clinical and clinical assessments of grape seed extract in wound models, and (iii) to encourage innovation scientists in the field to address current limitations and to effectively develop grape seed extract-based wound care product formulations for commercialization.
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Affiliation(s)
- Amita Ajit
- Research and Development, Zum Heilen Diagnostic and Therapeutics Pvt. Ltd, Office No. 12/1543-C, SB Center, 2nd Floor, Museum Road, Thrissur, Kerala 680020 India
| | - A G Vishnu
- Research and Development, Zum Heilen Diagnostic and Therapeutics Pvt. Ltd, Office No. 12/1543-C, SB Center, 2nd Floor, Museum Road, Thrissur, Kerala 680020 India
| | - Prashanth Varkey
- Jubilee Centre for Medical Research, Jubilee Mission Medical College & Research Institute, P.B.No.737, Thrissur, Kerala 680 005 India
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Banwell MG, Pollard B, Liu X, Connal LA. Exploiting Nature's Most Abundant Polymers: Developing New Pathways for the Conversion of Cellulose, Hemicellulose, Lignin and Chitin into Platform Molecules (and Beyond). Chem Asian J 2021; 16:604-620. [PMID: 33463003 DOI: 10.1002/asia.202001451] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/17/2021] [Indexed: 12/16/2022]
Abstract
The four most prominent forms of biomass are cellulose, hemicellulose, lignin and chitin. In efforts to develop sustainable sources of platform molecules there has been an increasing focus on examining how these biopolymers could be exploited as feedstocks that support the chemical supply chain, including in the production of fine chemicals. Many different approaches are possible and some of the ones being developed in the authors' laboratories are emphasised.
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Affiliation(s)
- Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis, Jinan University, Guangzhou/Zhuhai, 510632/519070, P. R. China.,Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
| | - Brett Pollard
- Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
| | - Xin Liu
- Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
| | - Luke A Connal
- Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
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Thakur N, Patil RA, Talebi M, Readel ER, Armstrong DW. Enantiomeric impurities in chiral catalysts, auxiliaries, and synthons used in enantioselective syntheses. Part 5. Chirality 2019; 31:688-699. [PMID: 31318099 DOI: 10.1002/chir.23086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/10/2019] [Accepted: 05/13/2019] [Indexed: 01/02/2023]
Abstract
The enantiomeric excess of chiral starting materials is one of the important factors determining the enantiopurity of products in asymmetric synthesis. Fifty-one commercially available chiral reagents used as building blocks, catalysts, and auxiliaries in various enantioselective syntheses were assayed for their enantiomeric purity. The test results were classified within five impurities level (ie, <0.01%, 0.01%-0.1%, 0.1%-1%, 1%-10%, >10%). Previously from 1998 to 2013, several reports have been published on the enantiomeric composition of more than 300 chiral reagents. This series of papers is necessitated by the fact that new reagents are forthcoming and that the enantiomeric purity of the same reagent can vary from batch to batch and/or from supplier to supplier. This report presents chiral liquid chromatography (LC) and gas chromatography (GC) methods to separate enantiomers of chiral compounds and evaluate their enantiomeric purities. The accurate and efficient LC analysis was done using newly introduced superficially porous particle (SPP 2.7 μm) based chiral stationary phases (TeicoShell, VancoShell, LarihcShell-P, and NicoShell).
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Affiliation(s)
- Nimisha Thakur
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Rahul A Patil
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Mohsen Talebi
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Elizabeth R Readel
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas
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Yang YN, Han B, Yang PF, Feng ZM, Jiang JS, Zhang PC. A concise approach for determining the relative configuration of H-7 and H-8 in 8,4′-oxyneolignans by 1H NMR spectroscopy. Org Chem Front 2019. [DOI: 10.1039/c8qo01155a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The chemical shift difference between H-9a and H-9b can be used to accurately and rapidly determine the relative configuration of H-7 and H-8 in three types of 8,4′-oxyneolignan glucosides.
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Affiliation(s)
- Ya-Nan Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Bing Han
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Peng-Fei Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Zi-Ming Feng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Jian-Shuang Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Pei-Cheng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
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Kordbacheh F, Carruthers TJ, Bezos A, Oakes M, Du Fall L, Hocart CH, Parish CR, Djordjevic MA. Promotion of mammalian angiogenesis by neolignans derived from soybean extracellular fluids. PLoS One 2018; 13:e0196843. [PMID: 29738532 PMCID: PMC5940235 DOI: 10.1371/journal.pone.0196843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 04/20/2018] [Indexed: 01/04/2023] Open
Abstract
Excessive or insufficient angiogenesis is associated with major classes of chronic disease. Although less studied, small molecules which can promote angiogenesis are being sought as potential therapeutics for cardiovascular and peripheral arterial disease and stroke. Here we describe a bioassay-directed discovery approach utilising size exclusion and liquid chromatography to purify components of soybean xylem sap that have pro-angiogenic activity. Using high resolution accurate mass spectrometry and nuclear magnetic resonance spectroscopy, the structure of two pro-angiogenic molecules (FK1 and FK2) were identified as erythro-guaiacylglycerol-8-O-4'-(coniferyl alcohol) ether (eGGCE), and threo-guaiacylglycerol-8-O-4'-(coniferyl alcohol) ether (tGGCE). These two molecules, which are coniferyl neolignan stereoisomers, promoted in vitro angiogenesis in the μM to nM range. Independently sourced samples of eGGCE and tGGCE exhibited comparable pro-angiogenic activity to the soybean derived molecules. The cellular mode of action of these molecules was investigated by studying their effect on endothelial cell proliferation, migration, tube formation and adhesion to the extracellular matrix (ECM) components, fibronectin and vitronectin. They were found to enhance endothelial cell proliferation and endothelial cell tube formation on Matrigel, but did not affect endothelial cell migration or adhesion to fibronectin and vitronectin. Thus, this study has identified two coniferyl neolignan stereoisomers, eGGCE and tGGCE, as pro-angiogenic molecules, with eGGCE being less active than tGGCE.
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Affiliation(s)
- Farzaneh Kordbacheh
- Department of Plant Sciences, Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Thomas J. Carruthers
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Anna Bezos
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Marie Oakes
- Department of Plant Sciences, Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Lauren Du Fall
- Department of Plant Sciences, Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Charles H. Hocart
- Department of Plant Sciences, Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Christopher R. Parish
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Michael A. Djordjevic
- Department of Plant Sciences, Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
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