1
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Pasdaran A, Grice ID, Hamedi A. A review of natural products and small-molecule therapeutics acting on central nervous system malignancies: Approaches for drug development, targeting pathways, clinical trials, and challenges. Drug Dev Res 2024; 85:e22180. [PMID: 38680103 DOI: 10.1002/ddr.22180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/09/2023] [Accepted: 03/19/2024] [Indexed: 05/01/2024]
Abstract
In 2021, the World Health Organization released the fifth edition of the central nervous system (CNS) tumor classification. This classification uses histopathology and molecular pathogenesis to group tumors into more biologically and molecularly defined entities. The prognosis of brain cancer, particularly malignant tumors, has remained poor worldwide, approximately 308,102 new cases of brain and other CNS tumors were diagnosed in the year 2020, with an estimated 251,329 deaths. The cost and time-consuming nature of studies to find new anticancer agents makes it necessary to have well-designed studies. In the present study, the pathways that can be targeted for drug development are discussed in detail. Some of the important cellular origins, signaling, and pathways involved in the efficacy of bioactive molecules against CNS tumorigenesis or progression, as well as prognosis and common approaches for treatment of different types of brain tumors, are reviewed. Moreover, different study tools, including cell lines, in vitro, in vivo, and clinical trial challenges, are discussed. In addition, in this article, natural products as one of the most important sources for finding new chemotherapeutics were reviewed and over 700 reported molecules with efficacy against CNS cancer cells are gathered and classified according to their structure. Based on the clinical trials that have been registered, very few of these natural or semi-synthetic derivatives have been studied in humans. The review can help researchers understand the involved mechanisms and design new goal-oriented studies for drug development against CNS malignancies.
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Affiliation(s)
- Ardalan Pasdaran
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmacognosy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Irwin Darren Grice
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, Australia
- School of Medical Science, Griffith University, Gold Coast, Southport, Queensland, Australia
| | - Azadeh Hamedi
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmacognosy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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2
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Wei X, Huang JL, Gao HH, Yuan FY, Tang GH, Yin S. New halimane and clerodane diterpenoids from Croton cnidophyllus. NATURAL PRODUCTS AND BIOPROSPECTING 2023; 13:21. [PMID: 37410272 DOI: 10.1007/s13659-023-00386-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/28/2023] [Indexed: 07/07/2023]
Abstract
Three new halimane furanoditerpenoids (1-3) and three new clerodane furanoditerpenoids (4-6), along with seven known terpenoids including four pimarane diterpenoids (7-10) and three norisoprenoids (11-13) were isolated from the 95% EtOH extracts of the plants of Croton cnidophyllus. The 2D structures including absolute configuration of new furanoditerpenoids (1-6) were elucidated by analysis of their HRMS and NMR data as well as comparison of experimental and calculated ECD curves. Bioassay revealed that two compounds (8 and 9) possessed certain inhibitory effects against NO production stimulated by LPS, with IC50 values of 19.00 ± 1.76 and 21.61 ± 1.11 μM, respectively.
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Affiliation(s)
- Xun Wei
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Jia-Luo Huang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Hua-Hua Gao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Fang-Yu Yuan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Gui-Hua Tang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China.
| | - Sheng Yin
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China.
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3
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Velázquez-Jiménez R, González-Montiel S, Sánchez-Ortega I, Villagómez-Ibarra JR, Acevedo-Sandoval OA. ADMET prediction, Docking, DM analysis and antibacterial screening of epoxy furan-clerodanes from Croton hypoleucus. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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4
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Bastos RC, Vasconcelos CFM, Paiva MB, Reis TDDSD, Souza RB, Dos Santos HS, Bandeira PN, Aguiar LMV, Cunha RMSD. Assessment of antioxidant and antiparkinsonian potential of a new diterpene isolated from Croton argyrophylloides. Free Radic Res 2022; 56:760-770. [PMID: 36814389 DOI: 10.1080/10715762.2023.2176763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Oxidative stress is related to health problems including neurological and neurodegenerativedisturbs, such as Parkinson's disease. Natural compounds are reported as source of antioxidant molecules. Therefore, this study aimed to analyze the antioxidant and neuroprotective potential of a new diterpene isolated from C. argyrophylloides (MP-1). Male Wistar rats (250-300 g) were used to evaluate MP-1 antiparkinsonian potential through neurodegenerative model induced by the neurotoxin 6-hydroxydopamine (21 μg). On the 14th day, animals were submitted to behavioral tests and on the 15th day, brain areas were dissected to neurochemical analyzes. MP-1 demonstrated a high antioxidant capacity in vitro and decreased the parkinsonian effects, such as behavioral changes, motor alterations, and body weight loss. MP-1 was also able to control the upregulated levels of nitrosative stress and lipid peroxidation. These findings suggest MP-1 as a diterpene with high antioxidant capacity which might be used to development of new approach against Parkinson's disease.
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Affiliation(s)
| | | | - Marcela Bezerra Paiva
- Biotechnology Core of Sobral, State University of Acaraú Valley, Sobral, Ceará, Brazil
| | | | - Ricardo Basto Souza
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Hélcio Silva Dos Santos
- Exact Sciences and Technology Center, Natural Products Chemistry and Organic Synthesis Laboratory, State University of Vale do Acaraú, Sobral, Ceará, Brazil
| | - Paulo Nogueira Bandeira
- Exact Sciences and Technology Center, Natural Products Chemistry and Organic Synthesis Laboratory, State University of Vale do Acaraú, Sobral, Ceará, Brazil
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5
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Evaluation of antibacterial and enhancement of antibiotic action by the flavonoid kaempferol 7-O-β-D-(6″-O-cumaroyl)-glucopyranoside isolated from Croton piauhiensis müll. Microb Pathog 2020; 143:104144. [PMID: 32194182 DOI: 10.1016/j.micpath.2020.104144] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 03/08/2020] [Accepted: 03/11/2020] [Indexed: 01/27/2023]
Abstract
There has been a rapid increase in the incidence and prevalence of opportunistic bacterial infections. Inappropriate use of current antibiotics has continuously contributed to the emergence of resistance to conventional antibiotic therapy. Therefore, the search for natural molecules that are able to combat infections is of great public interest, and many of these compounds with antimicrobial properties can be obtained from phytochemical studies of medicinal plants. In this context, this study reports the isolation and characterization of the flavonoid, kaempferol 7-O-β-D-(6″-O-cumaroyl)-glucopyranoside, from Croton piauhiensis leaves. Additionally, the intrinsic antimicrobial action of the compound and its enhancement against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus strains were assessed. The minimum inhibitory concentration (MIC) of the compound was determined using broth microdilution assays. To evaluate the modulatory effect of the flavonoid, the MIC of antibiotics amikacin and gentamicin, belonging to the class aminoglycosides was assessed, with and without the compound in sterile microplates. The results of intrinsic antibacterial activity tests revealed that the compound had no antibacterial activity against strains tested at concentrations <1024 μg/mL. The combination of the flavonoid at a concentration of 128 μg/mL with gentamicin presented synergistic effects against S. aureus 10 and E. coli 06, and also reduced the MIC from 16 μg/mL to 4 μg/mL and 8 μg/mL, respectively. Amikacin also showed synergistic effects against S. aureus 10 and E. coli 06. We also observed reduced MIC for both, from 128 μg/mL to 32 μg/mL; however, antagonism for P. aeruginosa increased the MIC from 16 μg/mL to 64 μg/mL. The combination of the flavonoid with the aminoglycosides may be an alternative to potentiate the expected results in treatment against S. aureus and E. coli, since their association leads to a synergistic effect, reducing the MIC of these drugs and decreasing the dose necessary for therapeutic success.
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6
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Two new bioactive diterpenes identified from Isodon interruptus. Bioorg Chem 2020; 95:103512. [PMID: 31901752 DOI: 10.1016/j.bioorg.2019.103512] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/24/2019] [Accepted: 12/16/2019] [Indexed: 11/20/2022]
Abstract
In the course of our ongoing studies to discover bioactive chemical constituents from plants in the genus Isodon, two new diterpenes, kunminolide A (1) and rabdokunmin F (2) were isolated from the leaves of the medicinal plant Isodon interruptus. Kunminolide A (1) is a novel abietane-like diterpene with a novel skeleton, herein designated as 9, 10-seco-neoabietane. Rabdokunmin F (2) is an ent-kaurene diterpene with C-18 oxidized to a carboxylic acid group. The structures were determined by spectroscopic means including analysis of 1D- and 2D-NMR spectral data. Crystals of 1 obtained from methanol were suitable for X-ray analysis, which confirmed the chemical structure. Kunminolide A (1) demonstrated chemopreventive potential by inducing QR1 activity with a CD value of 14.3 µM, and rabdokunmin F (2) was found to have cytotoxic activities with IC50 values in the range of 1.1-3.0 µM.
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7
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Costa Gontijo D, Fernanda Alves do Nascimento M, Borgati TF, Speziali NL, Dias de Souza Filho J, Braga de Oliveira A. A Comprehensive View on (−)‐7‐Oxo‐
ent
‐kaur‐16‐en‐19‐oic Acid, the Major Constituent of
Xylopia sericea
Leaves Extract: Complete NMR Assignments, X‐Ray Crystallographic Structure,
in Vitro
Antimalarial Activity and Cytotoxicity. Chem Biodivers 2019; 16:e1900141. [DOI: 10.1002/cbdv.201900141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/13/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Douglas Costa Gontijo
- Departamento de Produtos FarmacêuticosFaculdade de Farmácia Universidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
| | - Maria Fernanda Alves do Nascimento
- Departamento de Produtos FarmacêuticosFaculdade de Farmácia Universidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
| | - Tatiane Freitas Borgati
- Departamento de QuímicaInstituto de Ciências ExatasUniversidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
| | - Nivaldo Lúcio Speziali
- Departamento de FísicaInstituto de Ciências ExatasUniversidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
| | - José Dias de Souza Filho
- Departamento de QuímicaInstituto de Ciências ExatasUniversidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
| | - Alaíde Braga de Oliveira
- Departamento de Produtos FarmacêuticosFaculdade de Farmácia Universidade Federal de Minas Gerais Av. Antônio Carlos, 6627 CEP 31270-901 Belo Horizonte MG Brazil
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8
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Chemical Constituents from Croton Species and Their Biological Activities. Molecules 2018; 23:molecules23092333. [PMID: 30213129 PMCID: PMC6225158 DOI: 10.3390/molecules23092333] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022] Open
Abstract
The genus Croton belongs to the Euphorbiaceae family, which comprises approximately 1300 species. Many Croton species have been used as folk medicines. This review focuses on the chemical constituents from Croton species and their relevant biological activities, covering the period from 2006 to 2018. A total of 399 new compounds, including 339 diterpenoids, were reported. Diterpenoids are characteristic components of the Croton species. These isolated compounds exhibited a broad spectrum of bioactivities, including cytotoxic, anti-inflammatory, antifungal, acetylcholinesterase inhibitory, and neurite outgrowth-promoting properties. The present review provides a significant clue for further research of the chemical constituents from the Croton species as potential medicines.
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9
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Zhang ZX, Wu PQ, Li HH, Qi FM, Fei DQ, Hu QL, Liu YH, Huang XL. Norcrassin A, a novel C16 tetranorditerpenoid, and bicrotonol A, an unusual dimeric labdane-type diterpenoid, from the roots of Croton crassifolius. Org Biomol Chem 2018; 16:1745-1750. [DOI: 10.1039/c7ob02991h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Norcrassin A (1), a novel C16 tetranorditerpenoid, featuring a new carbon skeleton, and bicrotonol A (2), an unusual dimeric labdane-type diterpenoid, were isolated from Croton crassifolius.
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Affiliation(s)
- Zhan-Xin Zhang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
- State Key Laboratory of Applied Organic Chemistry
| | - Pei-Qian Wu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Hui-Hong Li
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Feng-Ming Qi
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Dong-Qing Fei
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
- State Key Laboratory of Applied Organic Chemistry
| | - Qiao-Ling Hu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Ying-Hong Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Xiao-Ling Huang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- People's Republic of China
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10
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Qiu S, Wu X, Liao H, Zeng X, Zhang S, Lu X, He X, Zhang X, Ye W, Wu H, Zhu X. Pteisolic acid G, a novel ent-kaurane diterpenoid, inhibits viability and induces apoptosis in human colorectal carcinoma cells. Oncol Lett 2017; 14:5540-5548. [PMID: 29113182 DOI: 10.3892/ol.2017.6889] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 06/27/2016] [Indexed: 12/27/2022] Open
Abstract
Human colorectal cancer (CRC) is a major cause of cancer morbidity and mortality, and its incidence rates are increasing in economical transitioning areas globally. To develop efficient chemotherapy drugs for CRC, the present study isolated and identified a novel ent-kaurane diterpenoid from Pteris semipinnata, termed pterisolic acid G (PAG). This ent-kaurane diterpenoid was demonstrated to significantly inhibit the growth of human CRC HCT116 cells in a time- and dose-dependent manner, determined using the Cell Counting Kit-8 assay. Additionally, western blot analysis, Hoechst 33342 staining and cytometry analysis revealed that PAG not only inhibited the viability of HCT116 cells by suppressing the dishevelled segment polarity protein 2/glycogen synthase kinase 3 β/β-catenin pathway, but also induced the apoptosis of HCT116 cells by downregulating nuclear factor-κB p65 activity, stimulating p53 expression and promoting the generation of intracellular reactive oxygen species. These results suggest that PAG, a novel inhibitor of the Wnt/β-catenin pathway and inducer of apoptosis, should be investigated in more detail using in vivo experiments and comprehensive mechanistic studies in order to examine the potential use of PAG as a novel therapeutic agent for the treatment of CRC.
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Affiliation(s)
- Shuangli Qiu
- Cancer Center, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Xin Wu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China.,Key Laboratory for New Drug Research of TCM and Shenzhen Branch, State R&D Centre for Vitro-Biotech, Research Institute of Tsinghua University in Shenzhen, Shenzhen, Guangdong 518057, P.R. China
| | - Hongbo Liao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Xiaobin Zeng
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China.,Key Laboratory for New Drug Research of TCM and Shenzhen Branch, State R&D Centre for Vitro-Biotech, Research Institute of Tsinghua University in Shenzhen, Shenzhen, Guangdong 518057, P.R. China
| | - Senwang Zhang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Xiaofen Lu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Xiaohong He
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
| | - Xiaoqi Zhang
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Wencai Ye
- Institute of Traditional Chinese Medicine and Natural Products, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Hua Wu
- Cancer Center, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, P.R. China
| | - Xiaohui Zhu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong 524023, P.R. China
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11
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Diterpenoids from the twigs and leaves of Croton caudatus var. tomentosus. Fitoterapia 2015; 107:54-59. [DOI: 10.1016/j.fitote.2015.10.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 10/02/2015] [Accepted: 10/12/2015] [Indexed: 11/22/2022]
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12
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Identification and Modulatory Activity Assessment of 2-Hydroxy-3,4,6-trimethoxyacetophenone Isolated from Croton anisodontusMull. Arg.(Euphorbiaceae). Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The n-hexane extract of the stem bark of Croton anisodontus yielded 2-hydroxy-3,4,6-trimethoxyacetophenone, a well-known substance, but isolated from this species for the first time. The antimicrobial and modulatory activities of the compound towards Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans, C krusei and C tropicalis strains were assessed. Antibiotics such as amikacin, gentamicin and neomycin were used in a subinhibitory concentration. Significant activity was observed towards P. aeruginosa and S. aureus 358, with p < 0.001 in association with amikacin. The present results place C anisodontus as an alternative source of 2-hydroxy-3,4,6-trimethoxyacetophenone with antibacterial potential.
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13
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Melo I, Teixeira A, Sena Junior D, Santos H, Albuquerque M, Bandeira P, Rodrigues A, Braz-Filho R, Gusmão G, Silva J, Faria J, Bento R. FT-Raman and FTIR-ATR spectroscopies and DFT calculations of triterpene acetyl aleuritolic acid. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.11.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Chávez K, Compagnone RS, Riina R, Briceño A, González T, Squitieri E, Landaeta C, Soscún H, Suárez AI. Crotofolane Diterpenoids from Croton caracasanus. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300801205] [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
Four new crotofolane-type diterpenoids, crotocarasin (A-D) (1–4), together with the known crotofolin E, were isolated from a dichloromethane extract of the stems of Croton caracasanus Pittier. The structures of the new compounds were determined by spectroscopic methods, and the structure of 3 was further confirmed by single-crystal X-ray data analyses.
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Affiliation(s)
- Katiuska Chávez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | - Reinaldo S. Compagnone
- Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela
| | - Ricarda Riina
- Real Jardín Botánico, RJB-CSIC, Plaza Murillo 2, Madrid 28014, Spain
| | - Alexander Briceño
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Teresa González
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Emilio Squitieri
- Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela
| | - Carlos Landaeta
- Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela, Caracas, Venezuela
| | - Humberto Soscún
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Alírica I. Suárez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
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15
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Ma BJ, Wen CN, Gao Y, Ren FC, Wang F, Liu JK. ent-Kaurane diterpenoids from the plant Wedelia trilobata. NATURAL PRODUCTS AND BIOPROSPECTING 2013; 3:107-111. [PMCID: PMC4131666 DOI: 10.1007/s13659-013-0029-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 05/13/2013] [Indexed: 06/05/2023]
Abstract
Four new ent-kaurane diterpenoids, namely, 3α-tigloyloxypterokaurene L3 (1), ent-17-hydroxy-kaura-9(11),15-dien-19-oic acid (2), and wedelobatins A (3) and B (4), together with 11 known ent-kaurane diterpenoids (5-15), were isolated from the ethanol extract of Wedelia trilobata. All the structures of 1–15 were elucidated on the basis of spectroscopic studies. ![]()
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Affiliation(s)
- Bing-Ji Ma
- Agronomy College of Henan Agricultural University, Zhengzhou, 450002 China
| | - Chun-Nan Wen
- Agronomy College of Henan Agricultural University, Zhengzhou, 450002 China
- BioBioPha Co., Ltd., Kunming, 650201 China
| | - Yuan Gao
- BioBioPha Co., Ltd., Kunming, 650201 China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Kunming, 650201 China
| | - Fu-Cai Ren
- BioBioPha Co., Ltd., Kunming, 650201 China
| | - Fei Wang
- BioBioPha Co., Ltd., Kunming, 650201 China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Kunming, 650201 China
| | - Ji-Kai Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Kunming, 650201 China
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16
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Antimicrobial and antibiofilm action of Casbane Diterpene from Croton nepetaefolius against oral bacteria. Arch Oral Biol 2012; 57:550-5. [DOI: 10.1016/j.archoralbio.2011.10.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/25/2011] [Accepted: 10/30/2011] [Indexed: 11/22/2022]
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17
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Aguiar LA, Porto RS, Lahlou S, Ceccatto VM, Barbosa R, Lemos TLG, dos Santos HS, Coelho-de-Souza AN, Magalhães PJC, Zin WA, Leal-Cardoso JH. Antispasmodic effects of a new kaurene diterpene isolated from Croton argyrophylloides on rat airway smooth muscle. ACTA ACUST UNITED AC 2012; 64:1155-64. [PMID: 22775219 DOI: 10.1111/j.2042-7158.2012.01494.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The effects of rel-(1S,4aS,7S,8aS)-7-(1-vinyl)-tetradecahydro-1,4a-dimethylphenanthrene-7,8a-carbolactone-1-carboxylic acid (TCCA), a new ent-kaurene diterpene isolated from Croton argyrophylloides, on rat tracheal preparations were investigated. METHODS Tracheae were removed and cut into two-cartilage segments that were mounted in organ baths containing Tyrode's solution. RESULTS TCCA reduced the contractions induced by electrical field stimulation, relaxed K(+)-induced contractions, and inhibited both phasic and tonic components of the K(+)- and ACh-induced contractions. TCCA reduced the serotonin-induced contraction, abolished that evoked by K(+) in the presence of epinephrine, and also reduced the ACh-induced contractions under Ca(2+)-free conditions. TCCA blocked contractions that depend on divalent cation inflow through voltage-operated Ca(2+) channels (VOCCs) and receptor-operated Ca(2+) channels (ROCCs), but had greater potency to block VOCC- than ROCC-dependent contractions or contractions induced by ACh in Ca(2+)-free conditions. TCCA relaxed the phorbol 12,13 dibutyrate (1 µm) induced contraction, but with slight potency. CONCLUSIONS TCCA induces an antispasmodic effect through several mechanisms including blockade of either VOCCs (with greater potency) or ROCCs, blockade of IP(3)-induced Ca(2+) release from sarcoplasmic reticulum (with intermediate potency) and reduction of the sensitivity of contractile proteins to Ca(2+).
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Affiliation(s)
- Liza Araújo Aguiar
- Electrophysiology Laboratory, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza, Brazil
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Kithsiri Wijeratne EM, Bashyal BP, Liu MX, Rocha DD, Gunaherath GMKB, U’Ren JM, Gunatilaka MK, Arnold AE, Whitesell L, Gunatilaka AAL. Geopyxins A-E, ent-kaurane diterpenoids from endolichenic fungal strains Geopyxis aff. majalis and Geopyxis sp. AZ0066: structure-activity relationships of geopyxins and their analogues. JOURNAL OF NATURAL PRODUCTS 2012; 75:361-9. [PMID: 22264149 PMCID: PMC3359839 DOI: 10.1021/np200769q] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Four new ent-kaurane diterpenoids, geopyxins A-D (1-4), were isolated from Geopyxis aff. majalis, a fungus occurring in the lichen Pseudevernia intensa, whereas Geopyxis sp. AZ0066 inhabiting the same host afforded two new ent-kaurane diterpenoids, geopyxins E and F (5 and 6), together with 1 and 3. The structures of 1-6 were established on the basis of their spectroscopic data, while the absolute configurations were assigned using modified Mosher's ester method. Methylation of 1-3, 5, and 6 gave their corresponding methyl esters 7-11. On acetylation, 1 and 7 yielded their corresponding monoacetates 12 and 14 and diacetates 13 and 15. All compounds were evaluated for their cytotoxic and heat-shock induction activities. Compounds 2, 7-10, 12, 14, and 15 showed cytotoxic activity in the low micromolar range against all five cancer cell lines tested, but only compounds 7-9, 14, and 15 were found to activate the heat-shock response at similar concentrations. From a preliminary structure-activity perspective, the electrophilic α,β-unsaturated ketone carbonyl motif present in all compounds except 6 and 11 was found to be necessary but not sufficient for both cytotoxicity and heat-shock activation.
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Affiliation(s)
- E. M. Kithsiri Wijeratne
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
| | - Bharat P. Bashyal
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
| | - Manping X. Liu
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
| | - Danilo D. Rocha
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
| | - G. M. Kamal B. Gunaherath
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
| | - Jana M. U’Ren
- Division of Plant Pathology and Microbiology, School of Plant Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, Arizona 85721, United States
| | - Malkanthi K. Gunatilaka
- Division of Plant Pathology and Microbiology, School of Plant Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, Arizona 85721, United States
| | - A. Elizabeth Arnold
- Division of Plant Pathology and Microbiology, School of Plant Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, Arizona 85721, United States
| | - Luke Whitesell
- Whitehead Institute, 9 Cambridge Center, Cambridge, Massachusettes 02142, United States
| | - A. A. Leslie Gunatilaka
- SW Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706, United States
- Corresponding Author, Tel: 520-621-9932. Fax: 520-621-8378.
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Mateu E, Chavez K, Riina R, Compagnone RS, Monache FD, Suárez AI. New 3,4- Seco-ent-kaurene Dimers from Croton micans. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
From the stems of Croton micans Sw., five new 3,4- seco-ent-kaurene dimers: micansinoic acid (1), isomicansinoic acid (2), and the dimethyl (3), monomethyl (4) and monoethyl ester (5) of micansinoic acid were isolated. The structures of the new compounds were elucidated by spectroscopic data interpretation, mainly 1D and 2D NMR experiments and MS. These compounds are the first 3,4- seco-ent-kaurene dimers from a Croton species.
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Affiliation(s)
- Elsa Mateu
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | - Katiuska Chavez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | - Ricarda Riina
- University of Michigan Herbarium and Department of Ecology and Evolutionary Biology, Ann Arbor, Michigan, USA
| | | | - Franco Delle Monache
- Dipartimento di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università di Roma, Roma, Italy
| | - Alírica I. Suárez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
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Casbane diterpene as a promising natural antimicrobial agent against biofilm-associated infections. Molecules 2010; 16:190-201. [PMID: 21193844 PMCID: PMC6259237 DOI: 10.3390/molecules16010190] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 11/29/2010] [Accepted: 12/20/2010] [Indexed: 11/17/2022] Open
Abstract
Croton nepetaefolius is a native plant from northeastern Brazil that belongs to the Euphorbiaceae family. The biological action of this plant has been extensively explored, being the secondary metabolites responsible for its properties alkaloids, diterpenes, and triterpenes. This study aimed to evaluate the ability of casbane diterpene (CD), isolated from the ethanolic extract of C. nepetaefolius, to inhibit microbial growth and biofilm formation of several clinical relevant species (bacteria and yeasts). It was found that CD possessed biocidal and biostatic activity against the majority of the species screened, with minimal active concentrations ranging between 125 and 500 µg/mL. In addition, it was observed that biofilm formation was inhibited even when the planktonic growth was not significantly affected. In conclusion, CD showed potential to be a natural tool for the treatment of diseases caused by different infectious microorganisms.
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