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Lopes RP, Ferreira FL, Faria de Sousa G, Cruz Nizer WSD, Magalhães CLDB, Ferreira JMS, Tótola AH, Duarte LP, de Magalhães JC. Activity of extracts and terpenoids from Tontelea micrantha (Mart. ex Schult.) A.C.Sm. (Celastraceae) against pathogenic bacteria. Nat Prod Res 2024:1-10. [PMID: 38328949 DOI: 10.1080/14786419.2024.2309554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/18/2024] [Indexed: 02/09/2024]
Abstract
The pharmacological properties of plant extracts and phytochemicals, such as flavonoids and terpenoids, remain of great interest. In this work, the effect of extracts, friedelan-3,21-dione, and 3β-O-D-glucosyl-sitosterol isolated from Tontelea micrantha roots was evaluated against Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumoniae, Klebsiella oxytoca and Escherichia coli. The antibacterial activity was evaluated by the minimum inhibitory and bactericidal concentrations (MIC and MBC, respectively), and the synergistic effect was assessed by the Checkerboard assay. Furthermore, the cytotoxicity of the plant-derived compounds against Vero cells was measured by the 3-(4 5-dimethylthiazol-2-yl)-2 5-diphenyltetrazolium bromide (MTT) method. The biological effects of the isolated compounds were predicted using the PASS online software. The chloroform and hexane extracts of T. micrantha roots showed promising antibacterial effect, with MIC in the range of 4.8-78.0 µg/mL. Further analyses showed that these compounds do not affect the integrity of the membrane. The combination with streptomycin strongly reduced the MIC of this antibiotic and extracts. The extracts were highly toxic to Vero cells, and no cytotoxicity was detected for the two terpenoids isolated from them (i.e. friedelan-3,21-dione and 3β-O-D-glucosyl-sitosterol; CC50 > 1000 μg/mL). Therefore, extracts obtained from T. micrantha roots significantly inhibited bacterial growth and are considered promising agents against pathogenic bacteria. The cytotoxicity results were very relevant and can be tested in bioassays.
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Affiliation(s)
- Ranieli Paiva Lopes
- Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, São João del-Rei, Brazil
| | | | | | | | | | | | - Antônio Helvécio Tótola
- Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, São João del-Rei, Brazil
| | - Lucienir Pains Duarte
- Department of Chemistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - José Carlos de Magalhães
- Department of Chemistry, Biotechnology, and Bioprocess Engineering, Universidade Federal de São João del-Rei, São João del-Rei, Brazil
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Tseme Wandji N, Bitchagno GTM, Mawabo Kamga I, Tchamgoue J, Nkenfou CN, Lenta BN, Sewald N, Kouam SF. Polyoxygenated Stigmastane-Type Steroids from Vernonia kotschyana Sch. Bip. ex Walp. and Their Chemophenetic Significance. Molecules 2023; 28:5278. [PMID: 37446939 DOI: 10.3390/molecules28135278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/15/2023] Open
Abstract
Four polyoxygenated stigmastanes (1-4) alongside known analogues (7-8) and flavonoids (5-6) were isolated from a dichloromethane/methanol (1:1, v/v) extract of the whole plant of Vernonia kotschyana Sch. Bip. ex Walp. (Asteraceae). Their structures were determined by means of spectroscopic and spectrometric analysis. The relative stereochemistry of the new compounds was established and confirmed via biosynthesis evidence and cyclization of 1 under acidic conditions. A plausible biosynthetic pathway to the new compounds and the chemophenetic significance of the isolated constituents were also discussed. The crude extract, fractions, and compounds (1-3) were assessed for their antibacterial activity against five highly prevalent bacterial strains. The fractions and compounds showed low to moderate activity with minimal inhibitory concentrations (MICs) > 125 µg/mL.
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Affiliation(s)
- Nadine Tseme Wandji
- Department of Chemistry, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
- Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Yaounde P.O. Box 812, Cameroon
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Gabin Thierry M Bitchagno
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
- Department of Chemistry, University of Dschang, Dschang P.O. Box 67, Cameroon
| | - Isabelle Mawabo Kamga
- Department of Biology, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
| | - Joseph Tchamgoue
- Department of Chemistry, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
- Department of Organic Chemistry, Faculty of Science, University of Yaounde I, Yaounde P.O. Box 812, Cameroon
| | - Celine Nguefeu Nkenfou
- Department of Biology, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
- Molecular Biology Center, Yaounde P.O. Box 14495, Cameroon
| | - Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Simeon Fogue Kouam
- Department of Chemistry, Higher Teacher Training College, University of Yaounde I, Yaounde P.O. Box 47, Cameroon
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Characterization of Promising Cytotoxic Metabolites from Tabebuia guayacan Hemsl.: Computational Prediction and In Vitro Testing. PLANTS 2022; 11:plants11070888. [PMID: 35406868 PMCID: PMC9002841 DOI: 10.3390/plants11070888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 11/16/2022]
Abstract
Genus Tabebuia is famous for its traditional uses and valuable phytoconstituents. Our previous investigation of Tabebuia species noted the promising anticancer activity of T. guayacan Hemsl. leaves extract, however, the mechanism underlying the observed anticancer activity is still unexplored. The current research was designed to explore the phytochemical content as well as to address the phytoconstituent(s) responsible for the recorded anticancer activity. Accordingly, sixteen compounds were isolated, and their structures were elucidated using different spectroscopic techniques. The drug-likeness of the isolated compounds, as well as their binding affinity with four anticancer drug target receptors: CDK-2/6, topoisomerase-1, and VEGFR-2, were evaluated. Additionally, the most promising compounds were in vitro evaluated for inhibitory activities against CDK-2/6 and VEGFR-2 enzymes using kinase assays method. Corosolic acid (3) and luteolin-7-O-β-glucoside (16) were the most active inhibitors against CDK-2 (−13.44 kcal/mol) and topoisomerase 1 (−13.83 kcal/mol), respectively. Meanwhile, quercetin 3-O-β-xyloside (10) scored the highest binding free energies against both CDK-6 (−16.23 kcal/mol) as well as against VEGFR-2 protein targets (−10.39 kcal/mol). Molecular dynamic simulation indicated that quercetin 3-O-β-xyloside (10) exhibited the least fluctuations and deviations from the starting binding pose with RMSD (2.6 Å). Interestingly, in vitro testing results confirmed the potent activity of 10 (IC50 = 0.154 µg/mL) compared to IC50 = 0.159 µg/mL of the reference drug ribociclib. These findings suggest the three noted compounds (3, 10, and 16) for further in vivo anticancer studies.
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Hamdan D, Fayed MAA, Adel R. Echinops taeckholmiana Amin: Optimization of a Tissue Culture Protocol, Biological Evaluation, and Chemical Profiling Using GC and LC-MS. ACS OMEGA 2021; 6:13105-13115. [PMID: 34056460 PMCID: PMC8158801 DOI: 10.1021/acsomega.1c00837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/28/2021] [Indexed: 05/16/2023]
Abstract
There have been no reports published on the rare Echinops taeckholmiana growing wildly in Egypt. So, this study aimed to preserve it through method optimization of in vitro seed germination, besides callus formation from induced seedlings. Chemical profiling using gas chromatography-mass spectrometry (GC-MS) analysis of the n-hexane fraction afforded 29 identified components, mainly fatty acids esters, sesquiterpenes, triterpenes, one thiophene, and bis(2-ethylhexyl) phthalate. Ultra-performance liquid chromatography-electron spray ionization/tandem mass spectrometry (UPLC-ESI/MS-MS) analysis of total alcoholic root and induced calli extracts resulted in 68 metabolites. Taraxeryl acetate, β-sitosterol, stigmasterol-3β-d-glucoside, and 1,1,1-kestopentaose were identified from the defatted root extract, which inhibited α-amylase (IC50 54.6 μg/mL) and α-glucosidase (60.4 μg/mL) enzymes compared with acarbose (IC50 values of 30.57 and 34.71 μg/mL, respectively). Moreover, it showed moderate activity against HepG2 (IC50 31.1 ± 1.4 μg/mL) and no activity against M-NFS-60 cell lines compared to cisplatin (IC50 3.25 ± 1.4 and 8.37 ± 0.25, respectively).
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Affiliation(s)
- Dalia
I. Hamdan
- Department
of Pharmacognosy and Natural Products, Faculty of Pharmacy, Menoufia University, Shibin El-Kom 32511, Egypt
| | - Marwa A. A. Fayed
- Department
of Pharmacognosy, Faculty of Pharmacy, University
of Sadat City, Sadat 32897, Egypt
| | - Rasha Adel
- Department
of Pharmacognosy, Faculty of Pharmacy, Zagazig
University, Zagazig 44519, Egypt
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Phytochemical Composition and Chronic Hypoglycemic Effect of Bromelia karatas on STZ-NA-Induced Diabetic Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:9276953. [PMID: 30930951 PMCID: PMC6413380 DOI: 10.1155/2019/9276953] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/17/2018] [Accepted: 02/11/2019] [Indexed: 11/17/2022]
Abstract
Oral administration of an aqueous extract of the aerial parts of Bromelia karatas to STZ-NA rats showed a significant hypoglycemic effect in a chronic trial lasting 42 days. Chromatographic profiles of the active extract (WE) and an organic extract (OE) of B. karatas were obtained by high-performance liquid chromatography (HPLC) and used to identify their major components. Isolation and identification of the compounds present in the extracts were accomplished by means of various conventional chromatographic and spectroscopic techniques. This process led to the identification of β-sitosterol-3-O-β-D-glucopyranoside (1) and ρ-coumaric acid (3) as the major compounds present in the extracts. During the isolation of 1 and 3, seven additional metabolites not previously reported for the plant were obtained, namely, cirsiliol 4'-O-β-D-glucopyranoside (2), stigmasterol (4), β-sitosterol (5), 1-O-feruloyl-3-O-ρ-coumaroylglycerol (6), β-D-(1-O-acetyl-3,6-O-trans-diferuloyl) fructofuranosyl-α-D-2',4',6'-O-triacetylglucopyranoside (7), 1-O-p-coumaroyl-3-O-caffeoylglycerol (8), and 2-propyl-β-glucopyranoside (9).
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Abdelhameed RF, Ibrahim AK, Yamada K, Ahmed SA. Cytotoxic and anti-inflammatory compounds from Red Sea grass Thalassodendron ciliatum. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2143-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Srivedavyasasri R, White MB, Kustova TS, Gemejiyeva NG, Cantrell CL, Ross SA. New tetranorlabdanoic acid from aerial parts of Salvia aethiopis. Nat Prod Res 2018; 32:14-17. [PMID: 28475363 PMCID: PMC5671917 DOI: 10.1080/14786419.2017.1324961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/22/2017] [Indexed: 10/19/2022]
Abstract
Salvia aethiopis is a perennial plant native to Eurasia and known by the common names Mediterranean sage or African sage. This plant has been used in Iranian medicine as a carminative and tonic. The ethanolic extract of aerial part of S. aethiopis exhibited moderate to weak activity towards delta and kappa opioid receptors (46.3 and 45.3% displacement, respectively). Chromatographic purification of the ethanolic extract on silica gel column led to isolation of one new: 3α-hydroxy-8α-acetoxy-13,14,15,16-tetranorlabdan-12-oic acid (I) and three known compounds: sesquiterpene spathulenol (II), β-sitosterol (III) and β-sitosterol-3-O-glucoside (IV). The structures of all isolated compounds were elucidated by their NMR (1D and 2D) and MS spectral data. All the fractions and isolated compounds were tested for cannabinoid and opioid receptor binding assays.
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Affiliation(s)
| | - Miriah B. White
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
| | - Tatyana S. Kustova
- Institute of Plant Biology and Biotechnology, Timiriazeva, Republic of Kazakhstan
| | | | | | - Samir A. Ross
- National Center for Natural Product Research, University of Mississippi, University, MS, USA
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, USA
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Rukachaisirikul T, Chokchaisiri S, Suebsakwong P, Suksamrarn A, Tocharus C. A New Ajmaline-type Alkaloid from the Roots of Rauvolfia serpentina. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new ajmaline-type alkaloid, 21- O-methylisoajmaline (1), together with twenty-one known compounds, a mixture ofβ-sitosterol (2) and stigmasterol (3), reserpinine (4), tetrahydroalstonine (5), reserpine (6), venoterpine (7), yohimbine (8), 6'- O-(3,4,5-trimethoxybenzoyl)glomeratose A (9), isoajmaline (10), 3- epi-α-yohimbine (11), methyl 3,4,5-trimethoxy- trans-cinnamate (12), a mixture of β-sitosterol 3- O-β-D-glucopyranoside (13) and stigmasterol 3- O-β-D-glucopyranoside (14), rescidine (15), 7-deoxyloganic acid (16), ajmaline (17), suaveoline (18), (+)-tetraphyllicine (19), loganic acid (20), 3-hydroxysarpagine (21), and sarpagine (22), were isolated from the roots of Rauvolfia serpentina. Their structures were elucidated by spectroscopic data analysis and comparison with literature data. Compounds 11, 12 and 15 were for the first time identified from the genus Rauvolfia and 5, 7, 11, 12, 15, 18 and 22 were found from R. serpentina for the first time. Compound 11 showed moderate anticholinesterase activity with IC50 value of 15.58 μM, whereas 6 exhibited strong vasorelaxant activity with the EC50 value of 0.05 μM.
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Affiliation(s)
- Thitima Rukachaisirikul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Suwadee Chokchaisiri
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Parichat Suebsakwong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Apichart Suksamrarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Chainarong Tocharus
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
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Hussein SR, Elkhateeb A, Marzouk MM, Ibrahim LF, Kawashty SA. Phytochemical investigation of Oligomeris linifolia (Vahl) Macbr. (Resedaceae). BIOCHEM SYST ECOL 2013. [DOI: 10.1016/j.bse.2013.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Liu D, Kong G, Chen QC, Wang G, Li J, Xu Y, lin T, Tian Y, Zhang X, Yao X, Feng G, Lu Z, Chen H. Fatty acids as natural specific inhibitors of the proto-oncogenic protein Shp2. Bioorg Med Chem Lett 2011; 21:6833-7. [PMID: 21962577 DOI: 10.1016/j.bmcl.2011.09.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 08/25/2011] [Accepted: 09/07/2011] [Indexed: 11/30/2022]
Abstract
Src homology-2 domain-containing protein tyrosine phosphatase (Shp2), a novel proto-oncogenic protein, is an important target in cancer therapy research. Approximately 2000 plant extracts were screened to find its natural specific inhibitors, with the ethyl acetate (EtOAc) active extract of the root of Angelica dahurica showing considerable inhibitory effects (IC(50)=21.6 mg/L). Bioguided isolation of EtOAc extract led to 13 compounds, including 10 fatty acids and derivatives. All these compounds were isolated from the plant for the first time. The inhibitory effects of these compounds on the enzyme activities of Shp2, VH1-related human protein (VHR), and hematopoietic protein tyrosine phosphatase (HePTP) were investigated. 8Z,11Z-Feptadecadienoic acid (4), 14Z,17Z-tricosadienoic acid (5), caffeic acid (9), and 2-hydroxy-3-[(1-oxododecyl) oxy]propyl-β-d-glucopyranoside (11) showed considerable selective inhibition of Shp2 activity. After treatment of HepG2 cells with the compounds, only compound 5, a polyunsaturated fatty acid, strongly induced poly (ADP-ribose) polymerase (PARP) cleavage in a dose- and time-dependent manner and increased the activities of caspase-3, caspase-8, and caspase-9 at 100 μM. Compound 5 also inhibited colony formation of HepG2 cells in a dose-dependent manner. Thus, this study reported fatty acids as specific Shp2 inhibitors and provided the molecular basis of one active compound as novel potential anticancer drug.
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Affiliation(s)
- Dongping Liu
- School of Pharmaceutical Sciences, Xiamen City Key Laboratory of Metabolism Disease, Xiamen University, Xiamen 361005, PR China
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Rodrigues VF, Carmo HM, Filho RB, Mathias L, Vieira IJC. Two New Terpenoids from Trichilia quadrijuga (Meliaceae). Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000500202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Two new terpenoids, ambrosanoli-10(14)-en-11,12-diol (1), a sesquiterpene named quadrijugol, and a pregnane steroid, 3β,4β-dihydroxypregnan-16-one (2), were isolated from the stem and leaves of Trichilia quadrijuga, along with eleven known compounds, spathulenol, kudtdiol, 2β,3β,4β-trihydroxypregnan-16-one, bourjotinolone B, piscidinol, niloticin, dihydroniloticin, β-sitosterol, 3-O-β-D-glucopyranosyl-sitosterol, itesmol and stigmasterol. Structures were elucidated by spectral data analysis, mainly afforded by 1H and 13C NMR (1D and 2D NMR HMQC, HMBC, NOESY and COSY) and mass spectra.
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Affiliation(s)
- Virginia F. Rodrigues
- Laboratório de Tecnologia de Alimentos, CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
| | - Hadria M. Carmo
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
| | - Raimundo Braz Filho
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
- Pesquisador Visitante Emérito – FAPERJ/UENF/UFRRJ
| | - Leda Mathias
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
| | - Ivo J. Curcino Vieira
- Laboratório de Ciências Químicas, CCT, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto – 28013-602, Campos dos Goytacazes – RJ, Brazil
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Vieira IJC, Figueiredo ER, Freitas VR, Mathias L, Braz-Filho R, Araújo RM. A New Sesquiterpene from Trichilia casarettii (Meliaceae). ACTA ACUST UNITED AC 2010. [DOI: 10.4236/ajac.2010.12009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Devkota KP, Lenta BN, Fokou PA, Sewald N. Terpenoid alkaloids of the Buxaceae family with potential biological importance. Nat Prod Rep 2008; 25:612-30. [DOI: 10.1039/b704958g] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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