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Bashyal B, Li L, Bains T, Debnath A, LaBarbera DV. Larrea tridentata: A novel source for anti-parasitic agents active against Entamoeba histolytica, Giardia lamblia and Naegleria fowleri. PLoS Negl Trop Dis 2017; 11:e0005832. [PMID: 28793307 PMCID: PMC5565192 DOI: 10.1371/journal.pntd.0005832] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 08/21/2017] [Accepted: 07/24/2017] [Indexed: 12/21/2022] Open
Abstract
Protozoan parasites infect and kill millions of people worldwide every year, particularly in developing countries where access to clean fresh water is limited. Among the most common are intestinal parasites, including Giardia lamblia and Entamoeba histolytica. These parasites wreak havoc on the epithelium lining the small intestines (G. lamblia) and colon (E. histolytica) causing giardiasis and amebiasis, respectively. In addition, there are less common but far more deadly pathogens such as Naegleria fowleri that thrive in warm waters and infect the central nervous systems of their victims via the nasal passages. Despite their prevalence and associated high mortality rates, there remains an unmet need to identify more effective therapeutics for people infected with these opportunistic parasites. To address this unmet need, we have surveyed plants and traditional herbal medicines known throughout the world to identify novel antiparasitic agents with activity against G. lamblia, E. histolytica, and N. fowleri. Herein, we report Larrea tridentata, known as creosote bush, as a novel source for secondary metabolites that display antiparasitic activity against all three pathogens. This report also characterizes the lignan compound classes, nordihydroguairetic acid and demethoxyisoguaiacin, as novel antiparasitic lead agents to further develop more effective drug therapy options for millions of people worldwide. Entamoeba histolytica, Giardia lamblia, and Naegleria fowleri pathogens are widespread throughout the world infecting and killing hundreds of thousands of people every year. They are also listed as category B bioterrorism agents by the NIH and the CDC. However, there is a serious unmet need to develop more effective therapies to treat these deadly pathogens. Herein we describe that lignans isolated from the creosote bush, common to the southwestern U.S.A. and throughout Mexico, display relatively potent antiparasitic activity against E. histolytica, G. lamblia, and N. fowleri.
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Affiliation(s)
- Bharat Bashyal
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Linfeng Li
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Trpta Bains
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California, United States of America
| | - Anjan Debnath
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California, United States of America
- * E-mail: (DVL); (AD)
| | - Daniel V. LaBarbera
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
- * E-mail: (DVL); (AD)
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152
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Chen H, Wang J, Wu J, Kuang Y, Wu F. Synthesis of α,α-difluorobenzoyl oxygen heterocycles via the radical reaction of 2-iodo-2,2-difluoroacetophenones with unsaturated acids or unsaturated alcohols. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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153
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Identification, classification and transcriptional profiles of dirigent domain-containing proteins in sugarcane. Mol Genet Genomics 2017; 292:1323-1340. [PMID: 28699001 DOI: 10.1007/s00438-017-1349-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/04/2017] [Indexed: 01/13/2023]
Abstract
Dirigent (DIR) proteins, encoded by DIR genes, are referred to as "dirigent" because they direct the outcome of the coupling of the monolignol coniferyl alcohol into (+) or (-) pinoresinol, the first intermediates in the enantiocomplementary pathways for lignan biosynthesis. DIR domain-containing or DIR-like proteins are, thus, termed for not having a clear characterization. A transcriptome- and genome-wide survey of DIR domain-containing proteins in sugarcane was carried out, in addition to phylogenetic, physicochemical and transcriptional analyses. A total of 120 non-redundant sequences containing the DIR domain were identified and classified into 64 groups according to phylogenetic and sequence alignment analyses. In silico analysis of transcript abundance showed that these sequences are expressed at low levels in leaves and genes in the same phylogenetic clade have similar expression patterns. Expression analysis of ShDIR1-like transcripts in the culm internodes of sugarcane demonstrates their abundance in mature internodes, their induction by nitrogen fertilization and their predominant expression in cells that have a lignified secondary cell wall, such as vascular bundles of young internodes and parenchymal cells of the pith of mature internodes. Due to the lack of information about the functional role of DIR in plants, a possible relationship is discussed between the ShDIR1-like transcriptional profile and cell wall development in parenchyma cells of sugarcane culm, which typically accumulates large amounts of sucrose. The number of genes encoding the DIR domain-containing proteins in sugarcane is intriguing and is an indication per se that these proteins may have an important metabolic role and thus deserve to be better studied.
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154
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Li N, Zhao M, Liu T, Dong L, Cheng Q, Wu J, Wang L, Chen X, Zhang C, Lu W, Xu P, Zhang S. A Novel Soybean Dirigent Gene GmDIR22 Contributes to Promotion of Lignan Biosynthesis and Enhances Resistance to Phytophthora sojae. FRONTIERS IN PLANT SCIENCE 2017; 8:1185. [PMID: 28725237 PMCID: PMC5495835 DOI: 10.3389/fpls.2017.01185] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 06/21/2017] [Indexed: 05/20/2023]
Abstract
Phytophthora root and stem rot caused by the oomycete pathogen Phytophthora sojae is a destructive disease of soybean worldwide. Plant dirigent proteins (DIR) are proposed to have roles in biosynthesis of either lignan or lignin-like molecules, and are important for defense responses, secondary metabolism, and pathogen resistance. In the present work, a novel DIR gene expressed sequence tag is identified as up-regulated in the highly resistant soybean cultivar 'Suinong 10' inoculated with P. sojae. The full length cDNA is isolated using rapid amplification of cDNA ends, and designated GmDIR22 (GenBank accession no. HQ_993047). The full length GmDIR22 is 789 bp and contains a 567 bp open reading frame encoding a polypeptide of 188 amino acids. The sequence analysis indicated that GmDIR22 contains a conserved dirigent domain at amino acid residues 43-187. The quantitative real-time reverse transcription PCR demonstrated that soybean GmDIR22 mRNA is expressed most highly in stems, followed by roots and leaves. The treatments with stresses demonstrated that GmDIR22 is significantly induced by P. sojae and gibberellic acid (GA3), and also responds to salicylic acid, methyl jasmonic acid, and abscisic acid. The GmDIR22 is targeted to the cytomembrane when transiently expressed in Arabidopsis protoplasts. Moreover, The GmDIR22 recombinant protein purified from Escherichia coli could effectively direct E-coniferyl alcohol coupling into lignan (+)-pinoresinol. Accordingly, the overexpression of GmDIR22 in transgenic soybean increased total lignan accumulation. Moreover, the lignan extracts from GmDIR22 transgenic plants effectively inhibits P. sojae hyphal growth. Furthermore, the transgenic overexpression of GmDIR22 in the susceptible soybean cultivar 'Dongnong 50' enhances its resistance to P. sojae. Collectively, these data suggested that the primary role of GmDIR22 is probably involved in the regulation of lignan biosynthesis, and which contributes to resistance to P. sojae.
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Affiliation(s)
- Ninghui Li
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
- Jiamusi Branch of Heilongjiang Academy of Agricultural SciencesJiamusi, China
| | - Ming Zhao
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Tengfei Liu
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Lidong Dong
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Qun Cheng
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Junjiang Wu
- Key Laboratory of Soybean Cultivation of Ministry of Agriculture China, Soybean Research Institute, Heilongjiang Academy of Agricultural SciencesHarbin, China
| | - Le Wang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Xi Chen
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Chuanzhong Zhang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Wencheng Lu
- Heihe Branch of Heilongjiang Academy of Agricultural SciencesHeihe, China
| | - Pengfei Xu
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
| | - Shuzhen Zhang
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China
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155
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Liu Y, Wang QL, Zhou CS, Xiong BQ, Zhang PL, Yang CA, Tang KW. Metal-Free Oxidative C–C Bond Functionalization of Methylenecyclopropanes with Ethers Leading to 2-Substituted 3,4-Dihydronaphthalenes. J Org Chem 2017. [DOI: 10.1021/acs.joc.7b00970] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Qiao-Lin Wang
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Cong-Shan Zhou
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry
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Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Pan-Liang Zhang
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Chang-an Yang
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Ke-Wen Tang
- Department of Chemistry
and
Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
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156
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Kimura Y, Sone Y, Saito T, Mochizuki T, Nishii Y. An Asymmetric Total Synthesis of Tupichilignan A using Donor-Acceptor Cyclopropanes: A Structural Revision of Tupichilignan A. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700222] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yumi Kimura
- Department of Applied Chemistry, Faculty of Textile Science and Technology; Shinshu University; Tokida 3-15-1, Ueda Nagano 386-8567 Japan
| | - Yoshitomo Sone
- Department of Applied Chemistry, Faculty of Textile Science and Technology; Shinshu University; Tokida 3-15-1, Ueda Nagano 386-8567 Japan
| | - Taichi Saito
- Department of Applied Chemistry, Faculty of Textile Science and Technology; Shinshu University; Tokida 3-15-1, Ueda Nagano 386-8567 Japan
| | - Takehito Mochizuki
- Department of Applied Chemistry, Faculty of Textile Science and Technology; Shinshu University; Tokida 3-15-1, Ueda Nagano 386-8567 Japan
| | - Yoshinori Nishii
- Department of Applied Chemistry, Faculty of Textile Science and Technology; Shinshu University; Tokida 3-15-1, Ueda Nagano 386-8567 Japan
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157
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Tshitenge DT, Feineis D, Awale S, Bringmann G. Gardenifolins A-H, Scalemic Neolignans from Gardenia ternifolia: Chiral Resolution, Configurational Assignment, and Cytotoxic Activities against the HeLa Cancer Cell Line. JOURNAL OF NATURAL PRODUCTS 2017; 80:1604-1614. [PMID: 28488862 DOI: 10.1021/acs.jnatprod.7b00180] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
From the tropical plant Gardenia ternifolia Schumach. and Thonn. (Rubiaceae), eight stereoisomeric 2,3-dihydrobenzo[b]furan neolignans, named gardenifolins A-H (1a-d and 2a-d), were isolated and fully structurally characterized. Reversed-phase chromatography of a stem bark extract afforded two peaks, viz. mixtures I and II, each one consisting of two diastereomers and their respective enantiomers. They were resolved and stereochemically analyzed by HPLC on a chiral phase coupled to electronic circular dichroism (ECD) spectroscopy, giving single ECD spectra of all eight stereoisomers. The double-bond geometries (E or Z) of the gardenifolins A-H and their relative configurations (cis or trans) at the stereogenic centers C-7 and C-8 in the dihydrofuran ring system were assigned by 1D and 2D NMR methods, in particular, using NOE difference experiments, whereas the absolute configurations of the isolated enantiomers were established by ECD spectroscopy by applying the reversed helicity rule. The individual pure gardenifolin isomers A-H showed the most different cytotoxic effects against the human cancer HeLa cell line, with 1d and 2a displaying the highest activities, with IC50 values of 21.0 and 32.5 μM, respectively. Morphological experiments indicated that gardenifolin D (1d) induces apoptosis of HeLa cells at 25 μM.
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Affiliation(s)
- Dieudonné Tshitenge Tshitenge
- Institute of Organic Chemistry, University of Würzburg , Am Hubland, D-97074 Würzburg, Germany
- Faculty of Pharmaceutical Sciences, University of Kinshasa , B.P. 212, Kinshasa XI, Democratic Republic of the Congo
| | - Doris Feineis
- Institute of Organic Chemistry, University of Würzburg , Am Hubland, D-97074 Würzburg, Germany
| | - Suresh Awale
- Division of Natural Drug Discovery, Institute of Natural Medicine, University of Toyama , 2630 Sugitani, Toyama 930-0194, Japan
| | - Gerhard Bringmann
- Institute of Organic Chemistry, University of Würzburg , Am Hubland, D-97074 Würzburg, Germany
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158
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Liu Y, Yu HY, Wang YM, Tian T, Wu WM, Zhou M, Meng XG, Ruan HL. Neuroprotective Lignans from the Fruits of Schisandra bicolor var. tuberculata. JOURNAL OF NATURAL PRODUCTS 2017; 80:1117-1124. [PMID: 28333453 DOI: 10.1021/acs.jnatprod.7b00035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nine new lignans (1-9) and ten known analogues (10-19) were isolated from the fruits of Schisandra bicolor var. tuberculata. The structures of compounds 1-9 were established on the basis of spectroscopic data analysis. The absolute configuration of compound 1 was determined by single-crystal X-ray diffraction analysis with Cu Kα irradiation techniques, and the absolute configurations of compounds 2-9 were deduced by comparing their experimental ECD spectra and optical rotations with those of compound 1 or similar compounds. All isolates were evaluated for their neuroprotective activities against CoCl2, H2O2, and Aβ25-35-induced SH-SY5Y cell injury, and were found to exhibit different degrees of neuroprotective effects. At a low concentration of 3.2 nM, compounds 3, 8, 9, and 14-19 in CoCl2-induced, compounds 7, 8, 13, 17, and 18 in H2O2-induced, and compounds 2, 6, 7, 9, 10, and 12-19 in Aβ25-35-induced SH-SY5Y cell injury models, showed statistically significant neuroprotective activities, when compared with each negative control group.
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Affiliation(s)
- Ye Liu
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Heng-Yi Yu
- Department of Pharmacy, Tongji Hospital Affiliated Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Yan-Mei Wang
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Tian Tian
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Wen-Ming Wu
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Ming Zhou
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Xiang-Gao Meng
- College of Chemistry, Central China Normal University , Wuhan 430079, People's Republic of China
| | - Han-Li Ruan
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
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159
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Bhaumik A, Verma RS, Tiwari B. Direct Construction of 2,3-Dihydroxy-2,3-diaryltetrahydrofurans via N-Heterocyclic Carbene/Base-Mediated Domino Reactions of Aromatic Aldehydes and Vinyl Selenone. Org Lett 2017; 19:444-447. [PMID: 28080069 DOI: 10.1021/acs.orglett.6b03501] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A one-pot, stereoselective construction of 2,3-dihydroxy-2,3-diaryltetrahydrofurans has been achieved via N-heterocyclic carbene (NHC)/base-mediated domino reactions of aldehydes and vinyl selenone. The products containing two contiguous quaternary hydroxyl functionalities among the three stereocenters are obtained advantageously as either acetals or ketals through the formation of five new chemical bonds in a single operation. This report constitutes an altogether different reactivity of vinyl selenone in comparison with the corresponding sulfones and phosphonates under NHC/base-mediated reactions.
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Affiliation(s)
- Atanu Bhaumik
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
| | - Ram Subhawan Verma
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
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160
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Navaratne PV, Grenning AJ. Deconjugative alkylation/Heck reaction as a simple platform for dihydronaphthalene synthesis. Org Biomol Chem 2017; 15:69-75. [DOI: 10.1039/c6ob02250b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple platform for carbocycle synthesis by Knoevenagel adduct deconjugative alkylation/“pairing” reaction is described.
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161
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Chaimanee S, Pohmakotr M, Kuhakarn C, Reutrakul V, Soorukram D. Asymmetric synthesis of ent-fragransin C1. Org Biomol Chem 2017; 15:3985-3994. [DOI: 10.1039/c7ob00749c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first asymmetric synthesis of ent-fragransin C1 bearing 2,3-anti-3,4-syn-4,5-anti stereochemistries is reported.
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Affiliation(s)
- Santikorn Chaimanee
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Manat Pohmakotr
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
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162
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Chiodelli G, Pellizzoni M, Ruzickova G, Lucini L. Effect of Different Aloe Fractions on the Growth of Lactic Acid Bacteria. J Food Sci 2016; 82:219-224. [DOI: 10.1111/1750-3841.13568] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/26/2016] [Accepted: 11/01/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Giulia Chiodelli
- Inst. of Environmental and Agricultural Chemistry; Univ. Cattolica del Sacro Cuore; via Emilia Parmense 84 29122 Piacenza Italy
| | - Marco Pellizzoni
- Inst. of Environmental and Agricultural Chemistry; Univ. Cattolica del Sacro Cuore; via Emilia Parmense 84 29122 Piacenza Italy
| | - Gabriela Ruzickova
- Central European Inst. of Technology; Zemedelska 1 - 613 00 Brno Czech Republic
| | - Luigi Lucini
- Inst. of Environmental and Agricultural Chemistry; Univ. Cattolica del Sacro Cuore; via Emilia Parmense 84 29122 Piacenza Italy
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163
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López-Biedma A, Sánchez-Quesada C, Delgado-Rodríguez M, Gaforio JJ. The biological activities of natural lignans from olives and virgin olive oils: A review. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.07.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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164
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Efficient synthesis of lactonic and thionolactoniclignans and evaluation of their anti-oxidant, anti-inflammatory and cytotoxic activities. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1709-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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165
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Effect of germination on lignan biosynthesis, and antioxidant and antiproliferative activities in flaxseed (Linum usitatissimum L.). Food Chem 2016; 205:170-7. [DOI: 10.1016/j.foodchem.2016.03.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 02/03/2016] [Accepted: 03/01/2016] [Indexed: 01/21/2023]
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166
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Mai S, Zhao Y, Song Q. Chemoselective acylation of benzimidazoles with phenylacetic acids under different Cu catalysts to give fused five-membered N-heterocycles or tertiary amides. Org Biomol Chem 2016; 14:8685-90. [PMID: 27430929 DOI: 10.1039/c6ob01167e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
C-N bond formation via a copper-catalyzed aerobic oxidative decarboxylative tandem protocol was realized. The phenylacetic acids which contain ortho-X (X = F or Br) on the aromatic ring will render a fused five-membered heterocycle via a tandem aromatic nucleophilic substitution and aerobic oxidative decarboxylative acylation at the C(sp(2))-H bond of benzimidazoles under the Cu(OAc)2/K2CO3/BF3·Et2O catalytic system, while with CuBr as the catalyst and pyridine as the base, N-acylation occurred and tertiary amides were obtained.
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Affiliation(s)
- Shaoyu Mai
- Institute of Next Generation Matter Transformation, College of Chemical Engineering at Huaqiao University, China.
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167
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Tikad A, Delbrouck JA, Vincent SP. Debenzylative Cycloetherification: An Overlooked Key Strategy for Complex Tetrahydrofuran Synthesis. Chemistry 2016; 22:9456-76. [DOI: 10.1002/chem.201600655] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Abdellatif Tikad
- University of Namur (UNamur); Département de Chimie; Laboratoire de Chimie Bio-Organique; rue de Bruxelles 61 5000 Namur Belgium
| | - Julien A. Delbrouck
- University of Namur (UNamur); Département de Chimie; Laboratoire de Chimie Bio-Organique; rue de Bruxelles 61 5000 Namur Belgium
| | - Stéphane P. Vincent
- University of Namur (UNamur); Département de Chimie; Laboratoire de Chimie Bio-Organique; rue de Bruxelles 61 5000 Namur Belgium
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168
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Stereoselective oxy-homo-Michael reactions of enantioenriched bicyclic donor–acceptor cyclopropanes to afford optically active trans-α,β-disubstituted γ-butyrolactones possessing three serial chiral centers. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.076] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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169
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Synthesis and biological evaluation of phenylpropanoid derivatives. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1554-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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170
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Rezende KC, Lucarini R, Símaro GV, Pauletti PM, Januário AH, Esperandim VR, Martins CH, Silva MA, Cunha WR, Bastos JK, Silva ML. Antibacterial activity of (−)-cubebin isolated from Piper cubeba and its semisynthetic derivatives against microorganisms that cause endodontic infections. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2016. [DOI: 10.1016/j.bjp.2015.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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171
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Wu Z, Lai Y, Zhou L, Wu Y, Zhu H, Hu Z, Yang J, Zhang J, Wang J, Luo Z, Xue Y, Zhang Y. Enantiomeric Lignans and Neolignans from Phyllanthus glaucus: Enantioseparation and Their Absolute Configurations. Sci Rep 2016; 6:24809. [PMID: 27126373 PMCID: PMC4850383 DOI: 10.1038/srep24809] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 04/05/2016] [Indexed: 12/04/2022] Open
Abstract
Eight pairs of enantiomeric neolignans, norlignans, and sesquineolignans (1a/1b–8a/8b), together with five known neolignans (9a/9b and 10–12), have been isolated from 70% acetone extract of the whole plants of Phyllanthus glaucus Wall. (Euphorbiaceae). The racemic or partial racemic mixtures were successfully separated by chiral HPLC using different types of chiral columns with various mobile phases. Their structures were elucidated on the basis of extensive spectroscopic data. The absolute configurations of 2a/2b were determined by computational analysis of their electronic circular dichroism (ECD) spectrum, and the absolute configurations of other isolates were ascertained by comparing their experimental ECD spectra and optical rotation values with those of structure-relevant compounds reported in literatures. Compounds 4a/4b featured unique sesquineolignan skeletons with a novel 7-4′-epoxy-8′-8′′/7′-2′′ scaffold, consisting of an aryltetrahydronaphthalene and a dihydrobenzofuran moiety. The planar structures of compounds 2, 3, 7, and 8 were documented previously; however, their absolute configurations were established for the first time in this study. The antioxidant activities of 1a/1b–8a/8b were evaluated using DPPH free radical scavenging assay, and the results demonstrated that compounds 1b and 3b showed potent DPPH radical scavenging activities with IC50 values of 5.987 ± 1.212 and 9.641 ± 0.865 μg/mL, respectively.
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Affiliation(s)
- Zhaodi Wu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Yongji Lai
- Department of Pharmacy, the Central Hospital of Wuhan, Wuhan 430014, Hubei Province, People's Republic of China
| | - Lei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Ye Wu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Zhengxi Hu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China
| | - Jinwen Zhang
- Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Zengwei Luo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Yongbo Xue
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
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172
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(7R,8S)-Dehydrodiconiferyl Alcohol Suppresses Lipopolysaccharide-Induced Inflammatory Responses in BV2 Microglia by Inhibiting MAPK Signaling. Neurochem Res 2016; 41:1570-7. [PMID: 26961887 DOI: 10.1007/s11064-016-1870-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 02/09/2016] [Accepted: 02/11/2016] [Indexed: 01/03/2023]
Abstract
(7R,8S)-Dehydrodiconiferyl alcohol (DDA), a lignan isolated from the dried stems of Clematis armandii, has been found to exert potential anti-inflammatory activity in vitro. In the present study, we investigated the effects and possible mechanisms of DDA on lipopolysaccharide (LPS)-mediated inflammatory response in murine BV2 microglia. Our results revealed that non-toxic concentrations (6.25-25 μM) of DDA markedly suppressed LPS-induced production of nitric oxide, expression of inducible nitric oxide synthase and cyclooxygenase-2, and release of inflammatory factors, including tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 in a concentration dependent manner. In addition, DDA time- and concentration-dependently attenuated LPS-induced phosphorylation of c-Jun N-terminal kinase 1/2 (JNK), but not protein kinase B, p38, or extracellular signal-regulated kinase 1/2. Moreover, DDA significantly suppress LPS-mediated nuclear factor-κB (NF-κB) activation by inhibiting phosphorylation and nuclear translocation of NF-κB p65. Collectively, our results demonstrated that DDA inhibited LPS-stimulated inflammatory response in BV2 cell, at least in part, through inhibition of NF-κB activation and modulation of JNK signaling.
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173
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Niwa AM, de Paula NA, Vesenick DC, Sartori D, Maistro EL, Ribeiro LR, Mantovani MS. Evaluation of lignan (-)-cubebin extracted from Piper cubeba on human colon adenocarcinoma cells (HT29). JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2016; 79:92-100. [PMID: 26817788 DOI: 10.1080/15287394.2015.1110067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The dibenzylbutyrolactone lignan (-)-cubebin, which is extracted from the seeds of the pepper Piper cubeba, has shown promise as an anti-inflammatory, analgesic, leishmanicidal, antiproliferative, and trypanocidal compound. Given the therapeutic potential of (-)-cubebin, this study aimed to investigate its safety profile by analyzing cytotoxicity, mutagenicity, cell proliferation kinetics, induction of apoptosis, and expression of pro-apoptotic genes in human colon adenocarcinoma cells (HT29) exposed to (-)-cubebin. MTT cytotoxicity assays demonstrated that (-)-cubebin was cytotoxic only at 280 µM, whereas it was not cytotoxic at 2.8, 14, or 28 µM. Data demonstrated that (-)-cubebin was not mutagenic as evidenced by a micronucleus (MN) assay, did not alter cell-growth kinetics over 4 d, and showed absence of induced apoptosis after 24 h. Further, CASP8 and CASP9 gene expression was not markedly changed in HT29 cells exposed to 28 µM or 70 µM (-)-cubebin for 12 h. Based on our observations, (-)-cubebin was cytotoxic at a concentration of 280 µM, suggesting that the use of this concentration should be avoided. However, lower concentrations exerted no apparent damaging effects, indicating that this lignan is safe to use for pharmacological purposes at certain concentrations.
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Affiliation(s)
| | | | | | - Daniele Sartori
- a Universidade Estadual de Londrina , Londrina, Paraná , Brazil
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174
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Sun JS, Liu H, Guo XH, Liao JX. The chemical synthesis of aryltetralin glycosides. Org Biomol Chem 2016; 14:1188-200. [PMID: 26645095 DOI: 10.1039/c5ob02188j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Led by etoposide and teniposide, the synthesis of aryltetralin glycosides has been experiencing flourishing development in the past five decades. Herein, a review focusing on the total synthesis of aryltetralin glycosides is provided. The main body of this review is composed of two parts, one is the enantioselective synthesis of aryltetralin derivatives and the other one is the construction of key glycosidic linkages. In each part the contents are organised based on the different strategies or protocols applied in the original documents. The total synthesis of aryltetralin glycosides represents the developing direction of this field, and sooner or later will replace the currently applied semi-total synthesis method, using the aglycon residue acquired directly from natural sources. This account provides a comprehensive and deep insight into the field of aryltetralin glycoside synthesis for chemists who have the intention of committing themselves to the development of aryltetralin glycoside medicine.
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Affiliation(s)
- Jian-Song Sun
- The National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China.
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175
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Coulerie P, Poullain C. New Caledonia: A ' Hot Spot' for Valuable Chemodiversity: Part 2: Basal Angiosperms and Eudicot Rosids. Chem Biodivers 2016; 13:18-36. [PMID: 26765350 DOI: 10.1002/cbdv.201400389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 01/13/2015] [Indexed: 11/07/2022]
Abstract
The flora of New Caledonia encompasses more than 3000 plant species and almost 80% are endemic. New Caledonia is considered as a 'hot spot' for biodiversity. With the current global loss of biodiversity and the fact that several drugs and pesticides become obsolete, there is an urgent need to increase sampling and research on new natural products. In this context, we review the chemical knowledge available on New Caledonian native flora from economical perspectives. We expect that a better knowledge of the economic potential of plant chemistry will encourage the plantation of native plants for the development of a sustainable economy which will participate in the conservation of biodiversity. In the second part of this review, we focus on the results exposed in 60 scientific articles and describe the identification of 225 original compounds from basal angiosperms and eudicot rosids. We discuss the economic potential of plants and molecules from medicinal and industrial perspectives. This review also highlights several plants and groups, such as Amborella sp., Piperaceae, or Phyllanthaceae, that are unexplored in New Caledonia despite their high chemical interest. Those plants are considered to have priority in future chemical investigations.
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Affiliation(s)
- Paul Coulerie
- Institut Agronomique néo-Calédonien, Connaissance et Amélioration des Agrosystèmes, BP A5, 98848 Noumea Cedex, New Caledonia. .,School of Pharmaceutical Sciences, University of Geneva, 30, Quai Ernest-Ansermet, CH-1211 Geneva 4, (phone: +41-22-3793409).
| | - Cyril Poullain
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Labex LERMIT, 1 Avenue de la Terrasse, FR-91198 Gif-sur-Yvette Cedex.,Stratoz, 5, Rue de la Baume, FR-75008 Paris
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176
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Barrios Antúnez DJ, Greenhalgh MD, Fallan C, Slawin AMZ, Smith AD. Enantioselective synthesis of 2,3-disubstituted trans-2,3-dihydrobenzofurans using a Brønsted base/thiourea bifunctional catalyst. Org Biomol Chem 2016; 14:7268-74. [DOI: 10.1039/c6ob01326k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The enantioselective synthesis of 2,3-disubstituted trans-2,3-dihydrobenzofuran derivatives via intramolecular Michael addition has been developed using a bifunctional tertiary amine–thiourea catalyst.
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Affiliation(s)
| | | | - Charlene Fallan
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Andrew D. Smith
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
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177
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Abe H, Hikichi T, Emori K, Kobayashi T, Ito H. Concise asymmetric total synthesis of catunaregin. Org Chem Front 2016. [DOI: 10.1039/c6qo00213g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric total synthesis of the optically pure catunaregin was accomplished in 7 steps from a known methyl ester using an asymmetric syn-selective aldol reaction and the successive ketalization of a furan diol derivative under acidic conditions.
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Affiliation(s)
- Hideki Abe
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Takuma Hikichi
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Kosuke Emori
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Toyoharu Kobayashi
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Hisanaka Ito
- School of Life Sciences
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
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178
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Affron DP, Bull JA. Palladium-Catalyzed Directed C(sp 3)-H Arylation of Saturated Heterocycles at C-3 Using a Concise Optimization Approach. European J Org Chem 2016; 2016:139-149. [PMID: 26877706 PMCID: PMC4736452 DOI: 10.1002/ejoc.201501300] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 11/18/2022]
Abstract
Saturated heterocycles, such as THFs, pyrrolidines, piperidines and THPs, are essential components of many biologically active compounds. Examples of C-H functionalization on these important ring systems remain scarce, especially at unactivated positions. Here we report the development of conditions for the palladium-catalyzed stereoselective C(sp3)-H arylation at unactivated 3-positions of 5- and 6-membered N- and O-heterocycles with aminoquinoline directing groups. Subtle differences in substrate structures altered their reactivity significantly; and different conditions were required to achieve high yields in each case. Successful conditions were developed using a short empirical optimization approach to cover reaction space with a limited set of variables. Excellent cis-selectivity was achieved in all cases, except for the THP substrate where minor trans-products were formed through a different palladacyclic intermediate. Here, differences in reactivity and selectivity with other directing groups were examined.
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Affiliation(s)
- Dominic P. Affron
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, http://www3.imperial.ac.uk/people/j.bull
| | - James A. Bull
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, http://www3.imperial.ac.uk/people/j.bull
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179
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Jung EK, Dittrich N, Pilkington LI, Rye CE, Leung E, Barker D. Synthesis of aza-derivatives of tetrahydrofuran lignan natural products. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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180
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Tedesco D, Garavaglia L, Spagnuolo MS, Pferschy-Wenzig EM, Bauer R, Franz C. In vivo assessment of an industrial waste product as a feed additive in dairy cows: Effects of larch (Larix decidua L.) sawdust on blood parameters and milk composition. Vet J 2015; 206:322-6. [PMID: 26526868 DOI: 10.1016/j.tvjl.2015.09.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 09/21/2015] [Accepted: 09/22/2015] [Indexed: 11/30/2022]
Abstract
When larch (Larix spp.) is processed in the wood industry, the sawdust is currently disposed of as waste or used as combustible material, even though it is rich in biologically active compounds. In this study the effect of larch sawdust supplementation on blood parameters as well as milk composition was examined in healthy mid-lactating dairy cows. Twenty-four multiparous Italian Friesian dairy cows were assigned to groups receiving either 300 g/day/cow of larch sawdust or a control diet, and treatments were continued for a 20 day period. Milk parameters were unaffected by treatment. A lower plasma total protein concentration was observed and can be attributed to a decrease in globulin concentration. A lower plasma urea concentration was also detected in the larch group. Moreover, biomarkers of liver function were influenced by the treatment. Total bilirubin was lower in larch-treated animals, and cholesterol tended to be lower. In addition, an interaction between day and treatment was observed for very low density lipoprotein. The concentration of other parameters, including reactive oxygen metabolites, superoxide dismutase, glutathione peroxidase and nitrotyrosine, did not differ between treatments. The observed benefits, together with the good palatability, make larch sawdust a promising candidate for the development of beneficial feed supplements for livestock. Further studies will be useful, particularly to evaluate its efficacy in different health conditions.
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Affiliation(s)
- D Tedesco
- Department of Health, Animal Science and Food Safety, Faculty of Veterinary Medicine, University of Milan, Via Celoria 10, 20133 Milan, Italy.
| | - L Garavaglia
- Department of Health, Animal Science and Food Safety, Faculty of Veterinary Medicine, University of Milan, Via Celoria 10, 20133 Milan, Italy
| | - M S Spagnuolo
- Institute of Animal Production Systems in Mediterranean Environments (ISPAAM), National Research Council (CNR), Via Argine 1085, 80147 Naples, Italy
| | - E M Pferschy-Wenzig
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4, 8010 Graz, Austria
| | - R Bauer
- Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitaetsplatz 4, 8010 Graz, Austria
| | - C Franz
- Institute for Applied Botany and Pharmacognosy, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210 Vienna, Austria
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181
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Lalwani KG, Sudalai A. First Enantioselective Synthesis of Surinamensinol B and a Non-Natural Polysphorin Analogue by a Two-Stereocentered Hydrolytic Kinetic Resolution. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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182
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Wałejko P, Dąbrowski M, Szczepaniak L, Morzycki JW, Witkowski S. Stereochemistry of ring-opening/cross metathesis reactions of exo- and endo-7-oxabicyclo[2.2.1]hept-5-ene-2-carbonitriles with allyl alcohol and allyl acetate. Beilstein J Org Chem 2015; 11:1893-901. [PMID: 26664608 PMCID: PMC4661012 DOI: 10.3762/bjoc.11.204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 09/23/2015] [Indexed: 11/24/2022] Open
Abstract
The ROCM reactions of exo- and endo-2-cyano-7-oxanorbornenes with allyl alcohol or allyl acetate promoted by different ruthenium alkylidene catalysts were studied. The stereochemical outcome of the reactions was established. The issues concerning chemo- (ROCM vs ROMP), regio- (1-2- vs 1-3-product formation), and stereo- (E/Z isomerism) selectivity of reactions under various conditions are discussed. Surprisingly good yields of the ROCM products were obtained under neat conditions.
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Affiliation(s)
- Piotr Wałejko
- Institute of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Michał Dąbrowski
- Institute of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Lech Szczepaniak
- Institute of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Jacek W Morzycki
- Institute of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Stanisław Witkowski
- Institute of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
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183
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Lee E, Bang J, Kwon J, Yu CM. Enantioselective Synthesis of a Furan Lignan (+)-Sylvone. J Org Chem 2015; 80:10359-63. [DOI: 10.1021/acs.joc.5b01677] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eunhye Lee
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jiyun Bang
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jisook Kwon
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Chan-Mo Yu
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
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184
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Xiao Y, Ji Q, Gao S, Tan H, Chen R, Li Q, Chen J, Yang Y, Zhang L, Wang Z, Chen W, Hu Z. Combined transcriptome and metabolite profiling reveals that IiPLR1 plays an important role in lariciresinol accumulation in Isatis indigotica. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:6259-71. [PMID: 26163698 PMCID: PMC7107596 DOI: 10.1093/jxb/erv333] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
A lignan, lariciresinol, is an important efficacious compound for the antiviral effect of Isatis indigotica, a widely used herb for the treatment of colds, fever, and influenza. Although some rate-limiting steps of the lariciresinol biosynthetic pathway are well known, the specific roles of gene family members in I. indigotica in regulating lariciresinol production are poorly understood. In the present study, a correlation analysis between the RNA sequencing (RNA-Seq) expression profile and lignan content by using I. indigotica hairy roots treated with methyl jamonate (0.5 μM) at different time points as a source implicated that I. indigotica pinoresinol/lariciresinol reductase 1 (IiPLR1), but not IiPLR2 or IiPLR3, contributed greatly to lariciresinol accumulation. Gene silencing by RNA interference (RNAi) demonstrated that IiPLR1 indeed influenced lariciresinol biosynthesis, whereas suppression of IiPLR2 or IiPLR3 did not change lariciresinol abundance significantly. IiPLR1 was thus further characterized; IiPLR1 was constitutively expressed in roots, stems, leaves, and flowers of I. indigotica, with the highest expression in roots, and it responds to different stress treatments to various degrees. Recombinant IiPLR1 reduces both (±)-pinoresinol and (±)-lariciresinol efficiently, with comparative K cat/K m values. Furthermore, overexpression of IiPLR1 significantly enhanced lariciresinol accumulation in I. indigotica hairy roots, and the best line (ovx-2) produced 353.9 μg g(-1) lariciresinol, which was ~6.3-fold more than the wild type. This study sheds light on how to increase desired metabolites effectively by more accurate or appropriate genetic engineering strategies, and also provides an effective approach for the large-scale commercial production of pharmaceutically valuable lariciresinol by using hairy root culture systems as bioreactors.
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Affiliation(s)
- Ying Xiao
- The MOE Key Laboratory of Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Qian Ji
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Shouhong Gao
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Hexin Tan
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Ruibing Chen
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qing Li
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Junfeng Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Yingbo Yang
- The MOE Key Laboratory of Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Lei Zhang
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Zhengtao Wang
- The MOE Key Laboratory of Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wansheng Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China
| | - Zhibi Hu
- The MOE Key Laboratory of Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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185
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Zhang Y, Shi J, Liu L, Gao Z, Che J, Shao D, Liu Y. Bioconversion of Pinoresinol Diglucoside and Pinoresinol from Substrates in the Phenylpropanoid Pathway by Resting Cells of Phomopsis sp.XP-8. PLoS One 2015; 10:e0137066. [PMID: 26331720 PMCID: PMC4557914 DOI: 10.1371/journal.pone.0137066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 08/12/2015] [Indexed: 12/27/2022] Open
Abstract
Pinoresinol diglucoside (PDG) and pinoresinol (Pin) are normally produced by plant cells via the phenylpropanoid pathway. This study reveals the existence of a related pathway in Phomopsis sp. XP-8, a PDG-producing fungal strain isolated from the bark of the Tu-chung tree (Eucommiaulmoides Oliv.). After addition of 0.15 g/L glucose to Phomopsis sp. XP-8, PDG and Pin formed when phenylalanine, tyrosine, leucine, cinnamic acid, and p-coumaric acid were used as the substrates respectively. No PDG formed in the absence of glucose, but Pin was detected after addition of all these substrates except leucine. In all systems in the presence of glucose, production of PDG and/or Pin and the accumulation of phenylalanine, cinnamic acid, or p-coumaric acid correlated directly with added substrate in a time- and substrate concentration- dependent manner. After analysis of products produced after addition of each substrate, the mass flow sequence for PDG and Pin biosynthesis was defined as: glucose to phenylalanine, phenylalanine to cinnamic acid, then to p-coumaric acid, and finally to Pin or PDG. During the bioconversion, the activities of four key enzymes in the phenylpropanoid pathway were also determined and correlated with accumulation of their corresponding products. PDG production by Phomopsis sp. exhibits greater efficiency and cost effectiveness than the currently-used plant-based system and will pave the way for large scale production of PDG and/or Pin for medical applications.
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Affiliation(s)
- Yan Zhang
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling, Shaanxi Province, 712100, China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province, 710072, China
- * E-mail:
| | - Laping Liu
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling, Shaanxi Province, 712100, China
| | - Zhenhong Gao
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling, Shaanxi Province, 712100, China
| | - Jinxin Che
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling, Shaanxi Province, 712100, China
| | - Dongyan Shao
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi’an, Shaanxi Province, 710072, China
| | - Yanlin Liu
- College of enology, Northwest A&F University, Xinong Road, Yangling, Shaanxi Province, 712100, China
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186
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Lindsay VNG, Viart HMF, Sarpong R. Stereodivergent Intramolecular C(sp(3))-H Functionalization of Azavinyl Carbenes: Synthesis of Saturated Heterocycles and Fused N-Heterotricycles. J Am Chem Soc 2015; 137:8368-71. [PMID: 26096731 DOI: 10.1021/jacs.5b04295] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A general approach for the formation of five-membered saturated heterocycles by intramolecular C(sp(3))-H functionalization is reported. Using N-sulfonyltriazoles as Rh(II) azavinyl carbene equivalents, a wide variety of stereodefined cis-2,3-disubstituted tetrahydrofurans were obtained with good to excellent diastereoselectivity from readily available acyclic precursors. The reaction is shown to be amenable to gram scale, and judicious choice of reaction conditions allowed for stereodivergence, providing selective access to the trans diastereomer in good yield. The resulting products were shown to be valuable intermediates for the direct preparation of fused N-heterotricycles in one step by intramolecular C-H amination or Pictet-Spengler cyclization.
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Affiliation(s)
- Vincent N G Lindsay
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Hélène M-F Viart
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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187
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Alcaide B, Almendros P, Luna A, Soriano E. An Alternative to Precious Metals: Hg(ClO4)2·3H2O as a Cheap and Water-Tolerant Catalyst for the Cycloisomerization of Allenols. J Org Chem 2015; 80:7050-7. [PMID: 26079496 DOI: 10.1021/acs.joc.5b00887] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Benito Alcaide
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Pedro Almendros
- Instituto de Química Orgánica General, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Amparo Luna
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Elena Soriano
- Instituto de Química Orgánica General, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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188
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Nicolle SM, Lewis W, Hayes CJ, Moody CJ. Stereoselective Synthesis of Highly Substituted Tetrahydrofurans through Diverted Carbene OH Insertion Reaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502484] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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189
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Nicolle SM, Lewis W, Hayes CJ, Moody CJ. Stereoselective Synthesis of Highly Substituted Tetrahydrofurans through Diverted Carbene OH Insertion Reaction. Angew Chem Int Ed Engl 2015; 54:8485-9. [DOI: 10.1002/anie.201502484] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/06/2015] [Indexed: 11/12/2022]
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190
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Yamauchi S, Ichikawa H, Nishiwaki H, Shuto Y. Evaluation of plant growth regulatory activity of furofuran lignan bearing a 7,9':7',9-diepoxy structure using optically pure (+)- and (-)-enantiomers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5224-8. [PMID: 25955149 DOI: 10.1021/acs.jafc.5b01099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The plant growth regulatory activity of furofuran lignan (7,9':7',9-diepoxylignan) was evaluated by employing optically pure synthesized (+)- and (-)-enantiomers. (+)-Sesamin possessing a 3,4-methylenedioxy group on the aromatic rings and 7-aryl structure showed growth promotion activity against lettuce roots (EC50 = 0.50 mM); on the other hand, growth inhibitory activity was observed against lettuce shoots (EC50 = 0.38 mM). Against ryegrass shoots, (-)-sesamolin, which has 3,4-methylenedioxy groups on the aromatic rings and a 7-acetal structure, was effective in showing growth inhibitory activity (EC50 = 0.23 mM). Different activity levels were observed between (+)- and (-)-enantiomers. It was assumed that the 3,4-methylenedioxy group on the aromatic ring was more potent for the plant growth regulatory activity.
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Affiliation(s)
- Satoshi Yamauchi
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
- §South Ehime Fisheries Research Center, 1289-1 Funakoshi, Ainan, Ehime 798-4292, Japan
| | - Hiroaki Ichikawa
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Hisashi Nishiwaki
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Yoshihiro Shuto
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
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191
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Wang J, Qian P, Hu Y, Yang J, Jiang J, Chen S, Zhang Y, Zhang S. Organocatalytic aldol addition reaction of cyclic hemiacetals to aldehydes. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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192
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Marchal A, Cretin BN, Sindt L, Waffo-Téguo P, Dubourdieu D. Contribution of oak lignans to wine taste: chemical identification, sensory characterization and quantification. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.07.090] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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193
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Bolsheva NL, Zelenin AV, Nosova IV, Amosova AV, Samatadze TE, Yurkevich OY, Melnikova NV, Zelenina DA, Volkov AA, Muravenko OV. The diversity of karyotypes and genomes within section Syllinum of the Genus Linum (Linaceae) revealed by molecular cytogenetic markers and RAPD analysis. PLoS One 2015; 10:e0122015. [PMID: 25835524 PMCID: PMC4383504 DOI: 10.1371/journal.pone.0122015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/05/2015] [Indexed: 11/18/2022] Open
Abstract
The wide variation in chromosome number found in species of the genus Linum (2n = 16, 18, 20, 26, 28, 30, 32, 36, 42, 72, 84) indicates that chromosomal mutations have played an important role in the speciation of this taxon. To contribute to a better understanding of the genetic diversity and species relationships in this genus, comparative studies of karyotypes and genomes of species within section Syllinum Griseb. (2n = 26, 28) were carried out. Elongated with 9-aminoacridine chromosomes of 10 species of section Syllinum were investigated by C- and DAPI/С-banding, CMA and Ag-NOR-staining, FISH with probes of rDNA and of telomere repeats. RAPD analysis was also performed. All the chromosome pairs in karyotypes of the studied species were identified. Chromosome DAPI/C-banding patterns of 28-chromosomal species were highly similar. Two of the species differed from the others in chromosomal location of rDNA sites. B chromosomes were revealed in all the 28-chromosomal species. Chromosomes of Linum nodiflorum L. (2n = 26) and the 28-chromosomal species were similar in DAPI/C-banding pattern and localization of several rDNA sites, but they differed in chromosomal size and number. The karyotype of L. nodiflorum was characterized by an intercalary site of telomere repeat, one additional 26S rDNA site and also by the absence of B chromosomes. Structural similarities between different chromosome pairs in karyotypes of the studied species were found indicating their tetraploid origin. RAPD analysis did not distinguish the species except L. nodiflorum. The species of section Syllinum probably originated from a common tetraploid ancestor. The 28-chromosomal species were closely related, but L. nodiflorum diverged significantly from the rest of the species probably due to chromosomal rearrangements occurring during evolution.
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Affiliation(s)
- Nadezhda L. Bolsheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Alexander V. Zelenin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Inna V. Nosova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Alexandra V. Amosova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana E. Samatadze
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Olga Yu. Yurkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Daria A. Zelenina
- Russian Federal Research Institute for Fisheries and Oceanography, Moscow, Russia
| | - Alexander A. Volkov
- Russian Federal Research Institute for Fisheries and Oceanography, Moscow, Russia
| | - Olga V. Muravenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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194
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Koch K, Büchter C, Havermann S, Wätjen W. The Lignan Pinoresinol Induces Nuclear Translocation of DAF-16 in Caenorhabditis elegans but has No Effect on Life Span. Phytother Res 2015; 29:894-901. [PMID: 25826281 DOI: 10.1002/ptr.5330] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 02/23/2015] [Accepted: 02/25/2015] [Indexed: 01/30/2023]
Abstract
The lignan pinoresinol is a constituent of flaxseed, sesame seeds and olive oil. Because of different molecular effects reported for this compound, e.g. antioxidative activity, pinoresinol is suggested to cause positive effects on humans. Because experimental data are limited, we have analysed the effects of the lignan on the nematode Caenorhabditis elegans: in spite of a strong antioxidative capacity detected in an in vitro assay, no antioxidative effects were detectable in vivo. In analogy to this result, no modulation of the sensitivity against thermal stress was detectable. However, incubation with pinoresinol caused an enhanced nuclear accumulation of the transcription factor DAF-16 (insulin/IGF-like signalling pathway). Using a strain with an enhanced oxidative stress level (mev-1 mutant), we clearly see an increase in stress resistance caused by this lignan, but no change in reactive oxygen species. Furthermore, we investigated the effects of pinoresinol on the life span of the nematode, but no modulation was found, neither in wild-type nor in mev-1 mutant nematodes. These results suggest that pinoresinol may exert pharmacologically interesting effects via modulation of the insulin-like signalling pathway in C. elegans as well as in other species like mammals due to the evolutionary conservation of this signalling pathway.
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Affiliation(s)
- Karoline Koch
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Biofunctionality of Secondary Plant Compounds, Weinbergweg 22 (Biozentrum), 06120, Halle/Saale, Germany
| | - Christian Büchter
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Biofunctionality of Secondary Plant Compounds, Weinbergweg 22 (Biozentrum), 06120, Halle/Saale, Germany
| | - Susannah Havermann
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Biofunctionality of Secondary Plant Compounds, Weinbergweg 22 (Biozentrum), 06120, Halle/Saale, Germany
| | - Wim Wätjen
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Biofunctionality of Secondary Plant Compounds, Weinbergweg 22 (Biozentrum), 06120, Halle/Saale, Germany
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195
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Shi YN, Shi YM, Yang L, Li XC, Zhao JH, Qu Y, Zhu HT, Wang D, Cheng RR, Yang CR, Xu M, Zhang YJ. Lignans and aromatic glycosides from Piper wallichii and their antithrombotic activities. JOURNAL OF ETHNOPHARMACOLOGY 2015; 162:87-96. [PMID: 25555357 DOI: 10.1016/j.jep.2014.12.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 11/03/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Piper wallichii (Miq.) Hand.-Mazz. is a medicinal plant used widely for the treatment of rheumatoid arthritis, inflammatory diseases, cerebral infarction and angina in China. Previous study showed that lignans and neolignans from Piper spp. had potential inhibitory activities on platelet aggregation. In the present study, we investigated the chemical constituents of Piper wallichii and their antithrombotic activities, to support its traditional uses. MATERIALS AND METHODS The methanolic extract of the air-dried stems of Piper wallichii was separated and purified using various chromatographic methods, including semi-preparative HPLC. The chemical structures of the isolates were determined by detailed spectroscopic analysis, and acidic hydrolysis in case of the new glycoside 2. Determination of absolute configurations of the new compound 1 was facilitated by calculated electronic circular dichroism using time-dependent density-functional theory. All compounds were tested for their inhibitory effects on platelet aggregation induced by platelet activating factor (PAF) in rabbits׳ blood model, from which the active ones were further evaluated the in vivo antithrombotic activity in zebrafish model. RESULTS A new neolignan, piperwalliol A (1), and four new aromatic glycosides, piperwalliosides A-D (2-5) were isolated from the stems of Piper wallichii, along with 25 known compounds, including 13 lignans, six aromatic glycosides, two phenylpropyl aldehydes, and four biphenyls. Five known compounds (6-10) showed in vitro antiplatelet aggregation activities. Among them, (-)-syringaresinol (6) was the most active compound with an IC50 value of 0.52 mM. It is noted that in zebrafish model, the known lignan 6 showed good in vivo antithrombotic effect with a value of 37% at a concentration of 30 μM, compared with the positive control aspirin with the inhibitory value of 74% at a concentration of 125μM. CONCLUSION This study demonstrated that lignans, phenylpropanoid and biphenyl found in Piper wallichii may be responsible for antithrombotic effect of the titled plant.
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Affiliation(s)
- Yan-Ni Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People׳s Republic of China
| | - Yi-Ming Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China; University of Chinese Academy of Sciences, Beijing 100049, People׳s Republic of China
| | - Lian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Xing-Cong Li
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS 38677, United States
| | - Jin-Hua Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Yan Qu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Hong-Tao Zhu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Dong Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Rong-Rong Cheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Chong-Ren Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China
| | - Min Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China.
| | - Ying-Jun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People׳s Republic of China.
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196
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Ziyatdinova GK, Budnikov HC. Natural phenolic antioxidants in bioanalytical chemistry: state of the art and prospects of development. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4436] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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197
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Wang H, Tang P, Zhou Q, Zhang D, Chen Z, Huang H, Qin Y. One-Pot Synthesis of Multisubstituted Butyrolactonimidates: Total Synthesis of (−)-Nephrosteranic Acid. J Org Chem 2015; 80:2494-502. [PMID: 25671631 DOI: 10.1021/jo5029166] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Huijing Wang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Pei Tang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Qilong Zhou
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Dan Zhang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Zhitao Chen
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Hongxiu Huang
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Qin
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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198
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Parella R, Babu SA. Regio- and Stereoselective Pd-Catalyzed Direct Arylation of Unactivated sp3 C(3)–H Bonds of Tetrahydrofuran and 1,4-Benzodioxane Systems. J Org Chem 2015; 80:2339-55. [DOI: 10.1021/acs.joc.5b00025] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ramarao Parella
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli
P.O., Sector 81, SAS Nagar, Mohali, Knowledge
City, Punjab 140306, India
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Manauli
P.O., Sector 81, SAS Nagar, Mohali, Knowledge
City, Punjab 140306, India
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199
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Tamura M, Koshibe Y, Kaji K, Ueda JY, Shirataki Y. Attempt to Synthesize 2,3,5,4′-Tetrahydroxystilbene Derived from 2,3,5,4′-Tetrahydroxystilbene-2- O-β-glucoside (THSG). Chem Pharm Bull (Tokyo) 2015; 63:122-5. [DOI: 10.1248/cpb.c14-00626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Yuhei Koshibe
- Faculty of Pharmaceutical Sciences, Josai University
| | - Kiho Kaji
- Faculty of Pharmaceutical Sciences, Josai University
| | - Jun-ya Ueda
- Frontier Research Core for Life Sciences, University of Toyama
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200
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Zhu Y, Qian P, Yang J, Chen S, Hu Y, Wu P, Wang W, Zhang W, Zhang S. Organocatalytic enantioselective Michael addition of cyclic hemiacetals to nitroolefins: a facile access to chiral substituted 5- and 6-membered cyclic ethers. Org Biomol Chem 2015; 13:4769-75. [DOI: 10.1039/c5ob00202h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient aminocatalytic enantioselective Michael addition of readily available cyclic hemiacetals to nitroolefins has been developed.
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Affiliation(s)
- Yadong Zhu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
| | - Pengfei Qian
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
| | - Jiyang Yang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
| | - Shaohua Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
| | - Yanwei Hu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
| | - Ping Wu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Wei Wang
- Department of Chemistry and Chemical Biology
- University of New Mexico
- Albuquerque
- USA
| | - Wei Zhang
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou 215123
- China
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